The B3 lithium battery charger is a compact plug and charge balance charger for 2S and 3S LiPo batteries, offering the simplest possible charging experience for beginner drone and RC devices, plug the charger into an AC mains wall socket (100-240V, 50-60Hz), connect the LiPo pack’s JST-XH balance connector to the matching port on the charger and the B3 automatically begins balance charging each cell to 4.2V at 800mA per cell without any menu navigation, current selection, or software setup required.
This makes the lithium battery charger the most accessible entry point for first-time LiPo users who want safe, balanced charging from a standard wall socket without purchasing a separate DC power supply as the iMAX B6DC requires. The 3s battery charger charges each cell simultaneously at 800mA per cell a maximum of 1.6A across two channels for a 2S pack and up to 2.4A across three channels for a 3S pack with each cell independently charged to the precise 4.2V ± 0.02V cutoff that prevents overcharging.
The 2s and 3s battery charger uses led indicators rather than an lcd screen to show charging status, a red led during charging and a green led when the cell reaches full charge making charge status immediately visible without reading a display. The lipo balance charger supports only LiPo chemistry in 2S and 3S configurations, covering all the standard 3S drone packs in the 2200mAh, 4200mAh, and 5200mAh BONKA and High Fly packs. This lipo charger is ideal for RC drone LiPo battery plug and charge balance charging. This charger is available on StemVolt working on LiPo battery maintenance and 2S 3S pack charging.
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- Checkout Dual Slot Li-ion Battery ChargerÂ
Features:
- Per-cell balance charging brings each cell to 4.2V independently for even termination
- 3 × 800mA channels handle 2S and 3S balance connector configurations
- 4.2V ± 0.02V precision cutoff prevents overcharge beyond safe Li-Ion limits
- Built-in AC plug eliminates separate power supply or adapter cable requirement
Technical Specifications:
| Specification | Details |
|---|---|
| Product Type | Lithium Battery Charger |
| Input Voltage | 100V–240V AC |
| Input Frequency | 50–60Hz |
| Maximum Output Current | 3 × 800mA |
| Maximum Charging Current | 1.2A |
| Cell Cutoff Voltage | 4.2V ± 0.02V |
| Compatible Battery Type | LiPo |
| Supported Cell Count | 2S–3S |
| Plug Type | US 2-Pin Plug |
Applications:
- B3 lithium battery charger balance charges 2S LiPo drone flight pack between flight sessions
- Balance charger maintains 3S LiPo robot chassis drive battery after each operation
- Charger charges 2S LiPo RC car battery pack from mains socket directly
- 3S LiPo charger balance charges 3S pack for RC fixed-wing aircraft between flying
- Li-Po charger for 2S 3S LiPo battery maintains portable electronics supply pack
Package Includes:
- 1 x B3 Lithium Battery Charger for 2S and 3S LiPo Batteries














Darsh Jindal –
Transparent checkout process
Reyansh Bansal –
Tamper-proof packaging ensured safety
Eklavya Agrawal –
Exactly as described
Samarth Goyal –
Smooth delivery process
Vihaan Mittal –
Purchased this charger for my LiPo battery setup and it worked perfectly right out of the box. Technical support was helpful, and the product arrived securely packed with fast delivery.
Jivaj Garg –
Great experience overall
Avyan Singhal –
It charges batteries efficiently, provides balanced charging, and is ideal for drones, RC models, robotics kits, and DIY electronics projects.