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4S 18650 Battery Protection BMS Board 20A
₹99.0
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The 4S 18650 Battery Protection BMS Board 20A is designed for lithium-ion and lithium polymer battery packs arranged in a 4-series (4S) configuration. This Battery Management System (BMS) ensures safe and efficient operation by providing overcharge, over-discharge, overcurrent, and short-circuit protection. With a 20A continuous discharge capacity, it is ideal for medium-to-high power applications such as e-bikes, DIY battery packs, energy storage systems, and portable devices. The board ensures longevity and stable performance of your batteries while preventing safety hazards.
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Product Specifications
| Specification | Details |
|---|---|
| Battery Type | 18650 Li-ion / LiPo |
| Configuration | 4S (4 cells in series) |
| Nominal Voltage | 14.8V (3.7V × 4) |
| Charging Voltage | 16.8V (4.2V per cell) |
| Continuous Discharge Current | 20A |
| Overcharge Protection Voltage | ~4.25V ± 0.05V per cell |
| Over-discharge Protection Voltage | ~2.8V ± 0.05V per cell |
| Overcurrent Protection | Yes |
| Short-circuit Protection | Yes |
Key Features
- Overcharge protection
- Over-discharge protection
- Overcurrent protection
- Short-circuit protection
- Supports up to 20A continuous discharge
- Enhances battery life and safety
- Compact and durable PCB design
- Suitable for 4S 18650 packs
- Easy to integrate in DIY projects
Applications
- E-bikes
- Electric scooters
- Power banks
- Energy storage systems
- DIY battery packs
- Robotics
- Portable devices
- Solar energy storage solutions
Inside the Box
- 1 × 4S 18650 Battery Protection BMS Board 20A
Frequently Asked Questions
Yes, it supports up to 20A continuous discharge, making it suitable for medium-to-high power devices like e-bikes and energy storage systems.
The BMS automatically cuts off charging or discharging to protect the cells from damage.
This BMS is designed for 18650 lithium-ion or lithium polymer cells arranged in a 4S (4 in series) configuration.
Some versions include balance function; please check product details before purchase.
