The 12V 10A Li-ion 3S BMS with Battery Pack is a complete 11.1V rechargeable battery solution that includes three 3.7V 18650 Lithium-Ion batteries and a 3S 10A Battery Management System (BMS). The integrated BMS provides overcharge, over-discharge, overcurrent, and short-circuit protection, ensuring safe charging and discharging of the battery pack. It is ideal for DIY battery packs, portable speakers, robotics, UPS systems, LED lighting, power tools, and portable power applications.
Features
- Full Name: 11.1V 10A 3S Li-ion Battery Pack with BMS
- Includes three 3.7V 18650 Li-ion batteries
- Integrated 3S 10A BMS protection board
- Compact and lightweight design
- High energy density
- Built-in battery protection
- Stable output voltage
- Suitable for DIY battery pack assembly
Specifications
| Specification | Value |
|---|---|
| Product Type | Li-ion Battery Pack with BMS |
| Battery Chemistry | Lithium-Ion (Li-ion) |
| Battery Configuration | 3S (3 Cells in Series) |
| Nominal Voltage | 11.1V |
| Full Charge Voltage | 12.6V |
| Number of Cells | 3 × 18650 |
| BMS Rating | 10A Continuous |
| Maximum Charging Current | 10A |
| Protection Features | Overcharge, Over-discharge, Overcurrent, Short Circuit |
| Cell Balancing | Model Dependent |
| Cycle Life | Up to 500 Charge Cycles (Typical) |
| Operating Temperature | Charging: 0°C to +45°C, Discharging: -20°C to +60°C |
BMS Connection
| Terminal | Description |
|---|---|
| B− | Battery Pack Negative |
| B1 | Cell 1 Positive |
| B2 | Cell 2 Positive |
| B+ | Battery Pack Positive |
| P− | Charge/Discharge Negative |
| P+ | Charge/Discharge Positive (Connected to B+) |
Note: Connect the balance wires in the correct sequence (B− → B1 → B2 → B+) before connecting the charger or load. Incorrect wiring may permanently damage the BMS.
Applications
- DIY battery packs
- Portable Bluetooth speakers
- Arduino and ESP32 projects
- Robotics
- LED lighting systems
- Portable power supplies
- Power tools
- UPS and backup power systems
- Educational electronics projects
Advantages
- Ready-to-build battery pack solution
- High energy density
- Built-in battery protection
- Compact and lightweight
- Reliable performance
- Rechargeable and reusable
- Easy to integrate into DIY projects
Size
| Specification | Value |
|---|---|
| Battery Cell Size | Approx. 18 × 65 mm (18650 Cell) |
| BMS Dimensions | Approx. 50 × 16 × 4 mm |
| Total Weight | Approx. 150–180 g (Model Dependent) |
Package Includes
- 3 × 3.7V 18650 Li-ion Rechargeable Batteries
- 1 × 3S 10A Li-ion BMS Protection Board
Note: This kit is designed only for 3S Li-ion/Li-Po battery packs (11.1V nominal, 12.6V fully charged). Use a 12.6V Li-ion charger for charging. Do not use a 14.6V LiFePO₄ charger, as it is not compatible and may damage the batteries. Always verify the wiring and polarity before connecting the battery pack, charger, or load.








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