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 builders — 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 2s 3s is ideal for RC drone LiPo battery plug-and-charge balance charging. Available from StemVolt!
Related Products:
- Explore Chargers and Adapters
Features:
- AC mains 100-240V input — no separate DC power supply needed
- Plug-and-charge — no menu setup or current selection required
- 800mA per cell fixed rate — safe slow charge for beginner LiPo use
- LED charge status — red charging, green complete per cell
Technical Specifications:
| Specification | Details |
|---|---|
| Input Voltage | 100–240V AC |
| Input Frequency | 50–60Hz |
| Maximum Output Current | 3 × 800mA |
| Compatible Battery Type | LiPo |
| Supported Cell Count | 2–3 Cells (2S–3S) |
| Maximum Charging Current | 1.2A |
| Cell Cutoff Voltage | 4.2V ± 0.02V |
| Plug Type | US 2-Pin Plug |
Applications:
- Maker charges 2200mAh 3S LiPo with B3 plug-and-charge simplicity
- Use Drone project for 2s and 3s battery charger beginner balance demo
- RC quad build charging 2S pack without separate DC power supply
- Lipo balance charger for beginner LiPo charge lab build
Package Includes:
- 1 x B3 Lithium Battery Charger














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.