Description
The 2S 20A 7.4V 8.4V 18650 Lithium Battery Protection Board BMS is a compact battery management module designed to protect and balance 2S lithium-ion battery packs. It is suitable for two 3.7V Li-ion cells, such as 18650 batteries, connected in series.
With a 20A protection rating, this BMS helps protect your battery pack from overcharging, over-discharging, excessive current, and short circuits. The built-in balance function helps maintain a more even voltage between the two connected cells, improving battery pack performance and lifespan.
Its small PCB design makes it easy to integrate into DIY battery packs, portable electronics, power banks, LED projects, robotics, and other rechargeable lithium-ion applications.
Features
- 2S battery configuration for two Li-ion cells connected in series
- Suitable for 3.7V Li-ion batteries, including 18650 cells
- 7.4V nominal battery voltage
- 8.4V maximum charging voltage
- 20A protection current for high-current battery applications
- Built-in cell balancing function
- Overcharge protection helps prevent excessive charging
- Over-discharge protection helps protect cells from deep discharge
- Overcurrent protection for safer operation
- Short-circuit protection helps protect the battery pack and connected circuit
- Compact PCB design for easy installation
- Suitable for DIY and custom rechargeable battery packs
Specifications
| Specification | Details |
|---|---|
| Module Type | 2S Li-ion BMS Protection Board |
| Battery Type | Li-ion / Lithium Polymer |
| Compatible Cells | 18650 and similar 3.7V Li-ion cells |
| Battery Configuration | 2S |
| Number of Cells | 2 cells in series |
| Nominal Battery Voltage | 7.4V |
| Maximum Charging Voltage | 8.4V |
| Protection Current | Up to 20A |
| Balance Function | Yes |
| Overcharge Protection | Yes |
| Over-Discharge Protection | Yes |
| Overcurrent Protection | Yes |
| Short-Circuit Protection | Yes |
| PCB Design | Compact |
| Application | DIY battery packs, portable electronics, power projects |
Applications
- 2S 18650 battery packs
- DIY rechargeable battery projects
- Portable power supplies
- Power banks
- LED lighting projects
- Robotics and electronics projects
- Battery-powered devices
- Custom Li-ion battery packs
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