TATTU 11.1V 450mAh 3S
4.7Editor score
Compact 450mAh 3S capacity
45C stated discharge rating
Two-pack RC configuration
In this guide
A LiPo battery pack with a JST plug is a compact power source used in remote-controlled cars, drones, helicopters, boats, airplanes, and small electronics. A suitable pack should match the equipment’s voltage, cell configuration, physical space, connector polarity, and expected load while providing dependable capacity and a safe charging setup.
This guide compares ten options across the details that determine real-world compatibility: 2S or 3S construction, nominal voltage, capacity, discharge rating, dimensions, weight, connector type, and stated applications. It also distinguishes between RC packs, multi-vehicle packs, and single-cell electronics batteries rather than treating every JST-equipped LiPo as interchangeable.
Each pick highlights a particular use case, from high-capacity TX packs to micro-drone batteries, RC trucks, helicopters, and ESP32 projects. Ratings and specifications reflect the supplied product information, while fitment still depends on your model, charger, wiring, and connector orientation. Product listings and availability can change.
Top 3 Picks for Best Lipo Battery Pack with Jst Plug
OVONIC 3800mAh 7.4V 2S1P
4.9Editor score
High-capacity 3800mAh configuration
7.4V 2S1P power arrangement
10C continuous discharge rating
URGENEX 900mAh 3S 50C
4.8Editor score
900mAh three-cell capacity
50C high-discharge design
Broad multi-vehicle application
Top 10 Best Lipo Battery Pack with Jst Plug in 2026 Compared
The comparison below places every pack on the same practical criteria, including electrical configuration, usable specifications, physical size, and the vehicle or project for which it is intended.
ProductsSpecificationsEditor scorePrice
Editor's Choice
OVONIC 3800mAh 7.4V
7.4V 2S1P configuration
3800mAh rated capacity
10C discharge rating
71.18 × 51.96mm footprint
4.9Editor score
Editor's Choice
URGENEX 500mAh 3S
11.1V 3S1P configuration
500mAh rated capacity
50C discharge rating
Two batteries included
4.6Editor score
Best Premium
Crazepony 400mAh 2S
7.4V two-cell configuration
400mAh rated capacity
30–60C operating range
22g approximate weight
4.5Editor score
VICMILE 1200mAh 2S
7.4V 2S power system
1200mAh rated capacity
35C burst 70C
55 × 30 × 16mm
4.6Editor score
HOOVO 450mAh 2S
7.4V 2S1P configuration
450mAh rated capacity
30C discharge rating
52 × 29.5 × 9mm
4.2Editor score
Blomiky 1200mAh 2S
7.4V two-cell system
1200mAh rated capacity
25C burst 30C
JST and USB charging
4.5Editor score
TATTU 450mAh 3S
11.1V 3S1P configuration
450mAh rated capacity
45C discharge rating
Two batteries included
4.7Editor score
Gens ace 800mAh 3S
11.1V 3S1P configuration
800mAh rated capacity
40C discharge rating
52 × 30 × 23mm
4.7Editor score
URGENEX 900mAh 3S
11.1V 3S1P configuration
900mAh rated capacity
50C discharge rating
Two batteries included
4.8Editor score
ESP32 2000mAh 1S
3.7V single-cell system
2000mAh rated capacity
JST 1.25 connector
Four batteries included
4.8Editor score
1. OVONIC 3800mAh 7.4V – High-Capacity Power
OVONIC 3800mAh 7.4V
7.4V 2S1P configuration
3800mAh battery capacity
10C continuous discharge
129g approximate weight
The OVONIC 3800mAh 7.4V 2S1P TX LiPo is a high-capacity battery intended for the QX7 transmitter, and it carries a 4.9 customer rating. Its standout characteristic is the combination of a 2S1P layout and 3800mAh capacity in a pack measuring approximately 71.18 × 51.96 × 18.17mm. That makes it substantially more substantial than the micro packs used in racing drones.
Pros
- Very high 3800mAh capacity
- Purpose-built for QX7 TX
- 10C stated discharge capability
- Two-year support period stated
Cons
- Heavier than compact drone packs
- Specific QX7 application
- Requires compatible 2S charger
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The battery is specified with a 10C discharge rating, a 3.8–4.2V cell-voltage range, and an approximate weight of 129 grams. The product information emphasizes energy density, cycle life, and stable output under high loads. OVONIC also recommends its own Mate1, X1, or X1 Pro charging equipment and specifically instructs users to stop charging when each cell reaches 4.2V.
Those recommendations are sensible, but the weight and larger footprint are real trade-offs for anyone who needs a lightweight pack. It is not a universal replacement for every 7.4V JST battery, and connector geometry, polarity, and transmitter cavity clearance should all be verified. The listed after-sales policy requires clear photographs for quality-related support and offers a two-year warranty period.
This is the strongest choice in the guide for a QX7 owner who values long operating duration and a purpose-designed fit. Choose it when the transmitter’s battery bay, charging system, and connector arrangement are known to match. For a small racing craft or lightweight aircraft, a lower-capacity pack would be easier to carry and more appropriate to the vehicle’s weight budget.
Capacity Built for Extended Transmitter Use
At 3800mAh, this pack offers considerably more stored energy than the 400mAh to 900mAh options in the guide. The larger capacity can be valuable for transmitters used during long sessions, provided the battery compartment can accommodate the 129-gram pack.
Purpose-Designed Connection Arrangement
The JST-SYP plug is presented specifically for the QX7, making the intended application clearer than with a broadly compatible RC pack. Check the transmitter revision and lead routing because visually similar connectors can differ in position and orientation.
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2. URGENEX 500mAh 3S – Versatile High-Discharge Pack
URGENEX 500mAh 3S
11.1V 3S1P configuration
500mAh rated capacity
50C discharge rating
Two batteries included
The URGENEX 11.1V 500mAh 3S pack is a two-battery set aimed at a wide range of small RC vehicles. Its 4.6 rating reflects a generally positive customer reception, while the listed applications include racing drones, helicopters, quadcopters, micro FPV craft, cars, trucks, boats, and airplanes. The specification is for a 3S1P lithium polymer configuration with a JST plug.
Pros
- High 50C discharge rating
- Two matching batteries supplied
- Wide range of RC applications
- Compact 500mAh capacity
Cons
- 3S voltage excludes 2S models
- Physical fit must be confirmed
- Requires a balance-capable 3S charger
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A 50C discharge rating gives this battery a stronger high-load specification than most of the 2S packs in the comparison. It measures approximately 2.2 × 1.18 × 0.63 inches and weighs 48 grams per pack, making it relatively compact for an 11.1V battery. The manufacturer states that the advanced battery design can be recycled at least 500 times and notes the absence of a cell-memory effect.
The broad compatibility language should not be mistaken for guaranteed fit. URGENEX itself says that the voltage, dimensions, and plug must match. A 3S pack will not belong in a device designed for 2S, and even within the correct voltage class, a battery tray or canopy may prevent the pack from seating properly. Connector case orientation and wire clearance are equally important.
This is a compelling choice for builders who want two interchangeable 3S packs and need a stated 50C discharge capability. It is especially relevant to compact drones and other moderate-load RC models that use an 11.1V JST-equipped setup. Verify the model’s battery bay, polarity, and charger before ordering, and use a charger designed for 3S lithium polymer packs.
Two-Pack Convenience for Rotating Batteries
Two matching 500mAh packs reduce downtime during a session. A user manual and storage box are also included, making it easier to keep the second battery protected and correctly identified.
High-Discharge Suitability for RC Loads
The 50C rating is useful for comparing burst capability against the vehicle’s motor and propeller demands. It does not remove the need to confirm electrical and physical compatibility.
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3. Crazepony 400mAh 2S – Lightweight Racing Choice
Crazepony 400mAh 2S
7.4V two-cell configuration
400mAh rated capacity
30–60C discharge range
22g approximate weight
The Crazepony 400mAh 2S 7.4V LiPo is designed specifically for micro FPV racing drones and quadcopters. It holds a 4.5 rating and weighs about 22 grams, with dimensions of approximately 1.5 × 0.75 × 0.75 inches. The product information names the EMAX BabyHawk, Mantis 85, and DM007 as compatible examples when their electrical and physical requirements match.
Pros
- Very light 22-gram design
- Compact micro-drone dimensions
- Direct JST connector
- Designed for 1104 motors
Cons
- Lower capacity than larger packs
- Limited to compatible 7.4V models
- Explicitly targets micro FPV craft
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Its 30–60C operating statement is framed around increased duration in steady-state flight and suitability for 1104 motors. The direct JST connector is convenient for micro FPV builds because it can simplify the connection compared with a bare lead. The 400mAh capacity offers a useful middle ground between compactness and the greater endurance associated with 450mAh to 900mAh batteries.
Buyers should not expect a 400mAh pack to provide the same runtime as a 1200mAh or 3800mAh battery. It may also be insufficient for a demanding model that draws more current than the lightweight setup for which it was designed. The warning not to overcharge, over-discharge, expose the pack to high temperatures, discard it into fire, or immerse it in water deserves careful attention.
This pack is a focused recommendation for a micro FPV racer seeking a light battery with a direct JST lead. It is less appropriate for larger aircraft, high-capacity transmitters, or general-purpose electronics. Confirm the voltage, connector, dimensions, and motor setup before installation, and pair it with a suitable 2S balance charger.
Minimal Weight for Micro Flight
At approximately 22 grams, the pack preserves room for heavier motors or electronics while providing a listed 400mAh capacity. The compact 1.5-inch length is particularly relevant to tight micro-drone frames.
Practical JST Integration
A JST connector can make installation and battery changes faster in a micro FPV platform. The soldered lead and cable routing still require enough clearance to prevent twisting or pinching.
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4. VICMILE 1200mAh 2S – High-Capacity Truck Pack
VICMILE 1200mAh 2S
7.4V 2S power system
1200mAh rated capacity
35C burst 70C
53.2g weight each
The VICMILE 7.4V 1200mAh 2S battery is aimed at the SCX24 and a substantial list of small-scale RC trucks. It has a 4.6 rating and offers a 35C continuous discharge rating with a stated 70C burst rating. The package contains two 1200mAh batteries, a manual, and a storage box, making it a ready-to-use option for owners of several compatible vehicles.
Pros
- Large 1200mAh capacity
- Dual discharge-plug configuration
- Strong stated burst rating
- Broad small-scale RC fit
Cons
- Too large for many micro models
- Connector details must be checked
- Two-pack bundle may be unnecessary
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Each battery measures 55 × 30 × 16mm and weighs 53.2 grams. The connection arrangement is described as a JST and PH2.0 double discharge plug, which may be convenient for vehicles that use either connection or for users who want flexibility. The listed vehicle coverage includes the SCX24, WLtoys A949, A959, A969, A979, K929, and many 1/10, 1/16, 1/18, and 1/24-scale trucks.
Its main limitation is the risk of assuming that all JST-equipped trucks are compatible. VICMILE explicitly requires matching voltage, dimensions, and plugs. The 16mm thickness and 53.2-gram weight are acceptable in many crawler-style trucks but not in micro drones or small helicopters. A double-plug lead can also be bulkier than a simple two-wire battery connector.
This is a strong option for a hobbyist who wants extended runtime in compatible 1/16- to 1/24-scale trucks, particularly when rotating between two batteries. It is less appropriate for micro aircraft or aircraft with strict weight limits. Before purchasing, measure the battery compartment, identify the existing connector and polarity, and verify that the vehicle’s electronics are designed for 7.4V.
Extended Runtime for Ground Vehicles
The 1200mAh capacity is considerably larger than the micro-drone options in this guide. That can translate into longer run time in trucks whose weight and space can accommodate the 53.2-gram pack.
Connector Flexibility Across RC Trucks
The stated JST and PH2.0 connection arrangement gives owners more choice when dealing with varied vehicle wiring. The extra lead should still be routed so it cannot contact moving drivetrain components.
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5. HOOVO 450mAh 2S – Slim Multi-Model Pack
HOOVO 450mAh 2S
7.4V 2S1P configuration
450mAh rated capacity
30C discharge rating
52 × 29.5 × 9mm
The HOOVO 7.4V 450mAh 2S battery is a compact two-pack set intended for small helicopters, racing drones, aircraft, and FPV craft. It has a 4.2 rating, the lowest among the ten products, but its specification includes a slim 30C discharge rating and a 450mAh capacity. The pack measures 52 × 29.5 × 9mm and weighs approximately 30.5 grams including its wire and plug.
Pros
- Very slim 9mm thickness
- Two matching packs included
- Broad small-RC application list
- Direct JST discharge plug
Cons
- Lower customer rating
- Adapter needed for SCX24
- Less runtime than larger packs
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Its 2S1P configuration uses a 3.2–4.2V cell range. The manufacturer cites an energy density of up to 300Wh/kg, a steady discharge curve, and a long cycle life. The stated compatible applications include the EMAX BabyHawk 250, Align T-REX 250, Blade 200 SR X, e-flite models, racing drones, small airplanes, and small FPV aircraft.
The 9mm thickness is one of the most useful physical attributes in this guide, as it can make installation easier in a model with a narrow battery compartment. However, the product information specifically says that an SCX24 requires a JST-to-PH two-pin adapter. As with every option here, a stated model association does not guarantee fit, and the adapter must maintain correct polarity.
This set is worth considering for owners of several small 2S models who value a slim profile and want two batteries. Its 450mAh capacity is close to the Crazepony 400mAh pack but offers a lower stated discharge rating. Select it for space-conscious applications and verify the model, lead orientation, charger, and any required connector adapter before use.
Slim Packaging for Tight Installations
The 9mm thickness makes the HOOVO pack more accommodating than most of the 450mAh alternatives in the guide. It can still be too large for the smallest micro aircraft, so measurements remain essential.
Useful Cross-Vehicle Compatibility
The broad list of helicopters, drones, airplanes, and FPV applications makes this a versatile two-pack option. A JST-to-PH two-pin adapter is required for the listed SCX24 application.
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6. Blomiky 1200mAh 2S – Feature-Rich Replacement Set
Blomiky 1200mAh 2S
7.4V two-cell system
1200mAh rated capacity
25C burst 30C
Includes USB charger
The Blomiky two-pack 7.4V 1200mAh LiPo is aimed primarily at replacing batteries in small RC trucks, construction vehicles, drones, helicopters, and similar equipment. It carries a 4.5 rating. The discharge connection is a red JST plug with a stated cross-section of 5.55 × 3.0mm, and the pack measures 66.6 × 30 × 15.3mm with a weight of 63 grams.
Pros
- Two 1200mAh packs included
- Red JST discharge connector
- Protected USB charging cable
- Extensive replacement compatibility
Cons
- Longer 66.6mm footprint
- 63-gram weight per battery
- Adapter may be needed
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One distinguishing feature is the included protected 7.4V USB charging cable. Its protection circuit and indicator light are described as blinking green during charging and stopping when the battery is full. The pack has a 25C continuous rating and a stated 30C burst rating, while the larger 1200mAh capacity should support longer operation in compatible ground vehicles.
The compatibility list is extensive, covering UDIRC, Huina, Laegendary, YIZHAN, JJRC, MJX, WLtoys, Cheerwing, and other RC models. Nevertheless, those associations depend on matching voltage, connector, dimensions, and polarity. The 66.6mm length may be longer than the space in some compact vehicles, and the USB cable appears intended for the 7.4V pack rather than for every JST device in the category.
This set is most useful for a hobbyist replacing a worn 1200mAh battery in one of the listed 7.4V models. It offers the convenience of a protected charging cable and a spare pack. Confirm the physical compartment and connector details first, and never use a USB charge lead unless the battery and vehicle are explicitly designed for that method.
Convenient Protected USB Charging
The included 7.4V cable has a protection circuit and a visible charging indicator. Its status light gives users a simple indication when charging has stopped, although compatible cell balancing and safe LiPo charging practices still matter.
High-Capacity Replacement for Small RC
At 1200mAh, these packs offer much greater capacity than common micro-drone batteries. Their 63-gram weight and 15.3mm thickness are best suited to small trucks and larger RC platforms with room to spare.
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7. TATTU 450mAh 3S – Compact Helicopter Power
TATTU 450mAh 3S
11.1V 3S1P configuration
450mAh rated capacity
45C discharge rating
40.5g weight each
The TATTU 11.1V 450mAh 3S pack is a compact hardcase battery sold as a two-pack set. Its 4.7 rating is among the strongest in the comparison. The specification combines a 3S1P configuration, 450mAh capacity, and a 45C discharge rating, making it a practical option for small 11.1V aircraft that use a JST-equipped battery arrangement.
Pros
- Compact 450mAh 3S format
- 45C stated discharge rate
- Hardcase construction
- Two batteries included
Cons
- Not suitable for 2S equipment
- Limited model-specific guidance
- Balanced 3S charging required
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Each battery measures 55 × 30.5 × 16mm and weighs approximately 40.5 grams. That footprint is easier to accommodate than many of the higher-capacity 3S packs in the guide. TATTU specifically names the small-size FPV torrent110 Baby Hawk, E-flite Viking Model 12 280, Inverza 280, and Adagio 280 among its intended applications.
Compatibility still requires more than a shared product label. A 3S battery has an 11.1V nominal voltage and must never be placed in a 2S-powered system. The 16mm thickness may also conflict with a narrow battery tray, while the 45C rating should be evaluated against the craft’s motor, propeller, and peak current draw rather than treated as a guarantee of performance.
This pack is a balanced choice for a small helicopter or FPV model that needs more voltage than a 2S pack without carrying a large 800mAh or 900mAh battery. The two-pack format supports rotation during a session, and the product is backed by the stated 60-day money-back and 18-month warranty terms. Use a proper 3S LiPo balance charger and confirm the connector orientation.
Compact Power for Small Aircraft
The 450mAh capacity keeps the pack lighter and smaller than 800mAh and 900mAh 3S alternatives. This is helpful in helicopters and FPV aircraft where excess battery mass can affect handling.
Two-Pack Availability with Support
Two matching batteries make it easier to maintain a rotation. TATTU also states a 60-day money-back period, an 18-month warranty, and 24-hour customer service support.
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8. Gens ace 800mAh 3S – Longer-Lasting Helicopter Pack
Gens ace 800mAh 3S
11.1V 3S1P configuration
800mAh rated capacity
40C discharge rating
72g weight each
The Gens ace 3S 800mAh 11.1V LiPo is a two-pack set positioned for 200- and 250-class helicopters, 800mm warbirds, and several named multirotor models. It has a 4.7 rating and uses a hardcase format. The 3S1P configuration provides a nominal 11.1V, while the stated 40C discharge rating indicates an emphasis on steady power delivery for RC loads.
Pros
- High 800mAh capacity
- Two matching packs supplied
- 40C stated discharge rate
- Hardcase construction
Cons
- Heavier than smaller 3S packs
- 23mm thickness restricts fit
- Model-specific fit still required
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Each battery measures 52 × 30 × 23mm and weighs 72 grams. The 800mAh capacity offers more endurance than the 450mAh 3S packs without moving into the 900mAh and 1,200mAh class. Gens ace names the Align T-REX 250, Blade 200 SR X, 230s, E-flite Blade CP and CP Pro, and 800mm warbirds among the compatible applications.
The tradeoff is weight and thickness. A 72-gram battery is noticeable in a small helicopter, and the 23mm height may not fit a narrow frame or a tightly packed receiver compartment. Users should check center of gravity, CG location, retention, and clearance around rotating components. A model name appearing in the description is helpful but does not eliminate the need to verify battery dimensions.
This is a good fit for a helicopter or warbird owner who needs more runtime than a 450mAh pack and can accommodate the added mass. The two-pack set also supports rotation during longer flights. Confirm the 11.1V system voltage, JST plug, polarity, compartment size, and charging setup before installation.
More Endurance Than 450mAh Alternatives
The 800mAh capacity can provide a meaningful runtime increase over compact 3S packs. That advantage is most valuable in aircraft designed to accommodate the additional 72 grams.
Hardcase Protection for Active Models
The hardcase adds a practical layer of protection for an RC aircraft that may experience minor impacts. It does not eliminate the need for a secure battery strap or retention system.
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9. URGENEX 900mAh 3S – High-Capacity Performance Pack
URGENEX 900mAh 3S
11.1V 3S1P configuration
900mAh rated capacity
50C discharge rating
80g weight each
The URGENEX 11.1V 900mAh 3S battery combines substantial capacity with a stated 50C discharge rating. It holds a 4.8 rating and comes as a two-pack set with a manual and box. The intended equipment range includes RC airplanes, racing drones, helicopters, quadcopters, micro FPV craft, cars, trucks, and boats.
Pros
- Substantial 900mAh capacity
- High 50C discharge rating
- Two matching batteries
- Wide RC platform coverage
Cons
- Heavy for micro aircraft
- 23mm thickness limits clearance
- Requires compatible 3S charger
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Its 3S1P configuration and 900mAh capacity make it a useful middle ground between the light 450mAh packs and the heavier 1,200mAh truck batteries. Dimensions are listed as 2.16 × 1.18 × 0.93 inches, with an approximate weight of 80 grams. The manufacturer states that the advanced LiPo design can be recycled at least 500 times and highlights stable charging and the absence of cell memory.
The broad vehicle list should be approached with care. An 80-gram battery can be too heavy for a micro FPV frame, while a 2S receiver or motor system cannot use a nominal 11.1V pack. The 0.93-inch thickness also demands a suitable battery compartment. URGENEX explicitly states that voltage, dimensions, and plug must match, making the user responsible for final compatibility.
This is a strong premium-style selection for a user who wants more endurance and a high stated discharge rating without moving to the 1,200mAh class. It is particularly compelling for 3S helicopters, larger multirotors, and ground vehicles with suitable space. Users should verify weight limits, connector orientation, retention security, and the use of a proper 3S balance charger.
Balanced Capacity and Discharge Capability
The 900mAh capacity and 50C rating offer a strong combination for an 11.1V RC setup. The pack is more substantial than micro options, so the target model must have adequate payload and battery clearance.
Rotation Between Matching Packs
Two identical 900mAh batteries simplify swaps and provide consistent electrical characteristics. They also make it easier to keep one pack charging safely while the other is in use.
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10. ESP32 2000mAh 1S – Long-Endurance Electronics Pack
ESP32 2000mAh 1S
3.7V single-cell system
2000mAh rated capacity
JST 1.25 connector
Four batteries included
The ESP32 2000mAh LiPo is built for low-power electronics rather than RC vehicles. It has a 4.8 rating, a 3.7V single-cell configuration, and a JST 1.25 plug intended for ESP32 development boards with SH1.25-2 connections. The product description also identifies use with the Mesh Node T114 and similar compact IoT or DIY projects.
Pros
- Very high single-cell capacity
- Built-in protection board
- UN 38.3 compliance stated
- Four-pack electronics bundle
Cons
- Not compatible with RC 2S systems
- Specific JST 1.25 interface
- Requires a 4.2V charger
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Four 2000mAh batteries are included, making this one of the most useful options for keeping several development boards powered or for rotating batteries during long projects. The protection board is specified to stop charging at 4.2V and shut off below 3.0V, helping guard against overcharge and deep discharge. The battery is also described as meeting UN 38.3 safety standards.
This pack cannot substitute for a 2S or 3S RC battery because its cell count and voltage class are fundamentally different. The 1.25mm JST dimensions and pin arrangement must also match the project. Charging through the wrong connector or reverse-charging the pack can damage the cell, and the manufacturer explicitly warns against reversed polarity.
This is a strong pick for an ESP32 maker who values capacity, protection, and a ready-made connector. For long-term storage, the instructions recommend a 3.7–3.9V charge, storage between minus 20 and 45 degrees Celsius, and a charge every three months. Use a compatible 4.2V charger and confirm the board’s connector orientation before connecting it.
High Capacity for Connected Projects
A 2000mAh single-cell battery can sustain low-power development boards longer than a small 400mAh drone pack. Actual runtime depends on the board, radio, sensors, display, and power-saving configuration.
Integrated Protection for DIY Electronics
The protection board cuts off charging at 4.2V and prevents continued discharge below 3.0V. It adds safeguards, but correct polarity, a proper charger, and regular inspection remain necessary.
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Buying Guide – How to Choose the Best Lipo Battery Pack with Jst Plug
The right LiPo battery pack with a JST plug depends primarily on exact electrical compatibility, connector construction, physical clearance, and the expected load. Use the following factors to narrow the options before considering a model-specific recommendation.
Confirm Cell Count and Voltage
A 2S LiPo has a nominal voltage of 7.4V, while a 3S pack is rated at 11.1V. These are different cell counts, and a battery with more cells cannot be safely used in an equipment system designed for fewer cells. A 1S pack, such as the ESP32 option, supplies a nominal 3.7V and is also electrically distinct. Begin with the voltage printed in the vehicle or device manual rather than relying on connector type, because a JST plug says nothing about the number of cells inside the pack.
Measure Capacity Against Runtime
Capacity determines how much energy the pack can store, although runtime also depends on current draw, motor efficiency, battery age, and flight or driving conditions. The guide includes options from 400mAh to 3,800mAh. Small micro drones favor lightweight packs around 400mAh to 900mAh, while RC trucks and transmitters benefit from the greater energy of 1,200mAh or more. Electronics projects may use high-capacity single cells. Choose based on the manufacturer’s recommended battery specification when available rather than simply selecting the largest pack that appears to fit.
Understand Discharge Ratings
The C rating expresses a battery’s theoretical maximum continuous discharge rate relative to its capacity. A 500mAh 50C battery is rated for a theoretical 25A continuous output, while the 3,800mAh 10C pack is rated for 38A. These values are useful for comparing specifications, but the actual safe load also depends on cell construction, motor demand, cooling, wiring, and the charger or ESC limits. Products with burst ratings may handle short peaks, but sustained use should stay within the continuous rating.
Verify the JST Connector
JST describes a connector family rather than one universal plug size. The options in this guide include references such as JST-SYP, JST 1.25, and PH2.0. Connector housing dimensions, contact spacing, pin count, and lead order must all match. Also inspect the side of the plug that carries the circuit-board connector, because mirrored cases can have incompatible pin assignments. A connector that appears physically similar can still cause reversed polarity, a short circuit, or a failed connection if inserted incorrectly.
Check Dimensions and Weight
Measure the battery bay and allow space for the wire, connector, retention strap, and any cooling airflow. The HOOVO 450mAh pack is only 9mm thick, which can help in tight micro models, while several 1,200mAh packs are 16mm or thicker. Weight matters even more in aircraft, where a large battery can alter balance and handling. Check the device’s battery weight limit and recommended center-of-gravity position. Never rely on a listed vehicle compatibility alone to guarantee clearance.
Select the Correct Charger
A LiPo pack should be charged with a charger designed for its cell count, chemistry, and connector. A 2S charger cannot safely charge a 3S pack, and a 3S charger cannot be assumed appropriate for a 1S board. For multi-cell RC batteries, balance charging is important because it keeps the individual cells at similar voltages. Some products in this guide include a USB charging cable, but that convenience does not change the pack’s underlying 7.4V two-cell requirement.
Consider Pack Quantity and Rotation
Two-pack sets make it convenient to rotate a charged battery while the other is in use, reducing waiting time during a session. They are especially useful for drones, helicopters, and RC trucks that consume batteries quickly. Electronics builders may also appreciate a four-pack for development boards. More batteries mean more total capacity to manage and more space for safe storage, so owners should maintain a consistent naming and labeling system to avoid mixing cell counts or charge levels.
Evaluate Support and Documentation
Quality support can make a difference when a pack arrives damaged, fails during a documented warranty period, or does not fit as expected. OVONIC states a two-year support period, VICMILE states a one-year warranty, and TATTU and Gens ace describe 18-month warranty terms. Warranty length alone does not establish suitability, but clear after-sales contact, photographic issue documentation, and compatible charging guidance are useful signs of a more established product support process.
How to Use and Care for Your Lipo Battery Pack with Jst Plug
Before first use, verify the cell count, nominal voltage, connector type, polarity, and physical fit against the equipment manual. Inspect the pack for swelling, torn insulation, exposed conductors, impact marks, or a damaged connector. If the pack looks abnormal, do not charge or install it. For a multi-cell battery, confirm that the charger is configured for the correct number of cells and that its balance lead or charge protocol matches the battery.
Charge LiPo batteries on a nonflammable surface where they cannot be left unattended. Use the specified voltage and current settings, do not overcharge, and remove the pack if it becomes unusually hot, swollen, or smells unusual. Do not charge a pack below its safe voltage or use reverse polarity. For storage, many RC packs benefit from a partial charge around 3.7–3.9V per cell, while the ESP32 product specifically recommends checking the battery every three months during long storage.
During use, secure the battery so it cannot shift, pinch, or contact moving parts. Monitor voltage, temperature, and signs of reduced performance, and stop using a pack that swells or becomes damaged. After a run, allow the pack to cool and inspect the connector for heat, discoloration, or looseness. End-of-cycle charging and storage should follow the battery and charger manufacturers’ guidance, especially for multi-cell packs that require balancing.
Frequently Asked Questions
Can any JST-plug LiPo battery replace another one?
No. A JST plug only identifies the connector family and does not guarantee matching voltage, capacity, dimensions, polarity, or pin order. Check at least those five details before replacing a pack. If the connector looks similar but the lead order differs, forcing it into place can reverse the polarity and damage the device.
What is the difference between a 2S and 3S JST battery?
A 2S battery contains two cells in series and has a nominal voltage of 7.4V, while a 3S battery contains three cells and has a nominal voltage of 11.1V. The 3S pack requires a compatible three-cell charger and cannot be used in a 2S device. Always follow the voltage printed in the equipment manual.
Is a higher C rating always better?
No. A higher C rating indicates greater theoretical discharge capability, but the cell chemistry, capacity, wiring, ESC, and motor demand still set practical limits. A 50C label can be useful for comparing a specification, yet it does not guarantee that every aircraft or vehicle is electrically or mechanically compatible.
How do I know if a JST connector will fit?
Compare the housing width, contact spacing, number of contacts, and overall lead arrangement with the existing connector. Pin order also matters because some JST-style connectors can look identical while carrying power in different positions. If the current connector is damaged, use its measurements and the equipment manual to identify the required replacement.
Do all these batteries need a balance charger?
Balancing is particularly important for 2S and 3S RC packs because cells can drift to different voltages during use. A correctly configured multi-cell LiPo balance charger helps keep the cells aligned. Single-cell electronics batteries use a different charging arrangement, so their specified charger and protection circuit should be followed.
Can I store a LiPo battery fully charged for months?
It is better to store lithium polymer batteries at a partial charge. The ESP32 product recommends 3.7–3.9V and a cool, dry storage environment, plus a charge check every three months. Other packs should follow their manufacturer’s storage guidance, and none should be left in a hot vehicle or exposed to damaging conditions.
Why does one JST battery fit while another does not?
The electrical specification may match while the physical dimensions or connector orientation still prevent installation. A longer battery may interfere with a canopy, while a thicker pack may not slide into a tray. The lead may also cross a motor mount or occupy the space needed by a battery strap. Measure the entire installation, including the wire bend.
What should I do if a LiPo pack becomes swollen?
Stop using or charging the battery immediately and move it away from flammable material only if it can be handled safely. Do not puncture, squeeze, or incinerate it. Follow the seller’s safety guidance and local battery-disposal rules, and replace the pack with one of the correct voltage, capacity, and connector type.
Final Thoughts on Choosing the Best Lipo Battery Pack with Jst Plug
The OVONIC 3800mAh 7.4V TX pack stands out for QX7 users who want high capacity, while the TATTU 450mAh 3S set offers a lighter two-pack format for compact 11.1V aircraft. The URGENEX 900mAh 3S combines generous capacity with a 50C discharge specification and broad RC application coverage.
For micro FPV racing, the Crazepony 400mAh 2S is purpose-built and exceptionally light, while the HOOVO 450mAh 2S provides a slimmer alternative. The VICMILE and Blomiky 1,200mAh packs serve compatible RC trucks, and the Gens ace 800mAh 3S targets helicopters and warbirds. ESP32 builders should instead consider the single-cell 2,000mAh electronics pack.
The deciding factors are always voltage, cell count, capacity, discharge needs, connector geometry, physical clearance, and weight. Review the current listing details, charger requirements, warranty information, and manufacturer instructions before purchasing, since product specifications and availability can change over time.