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Product Code: BMS-3S5A
Configuration: 3 Series (3S)
Rated Discharge Current: 5A
Battery Type: 18650 / Li-ion / Li-polymer
Category: Battery Management System (BMS)
The 3S 5A Li-ion BMS is a compact and lightweight protection module designed for 3-cell lithium-ion battery packs. It offers essential safety features such as overcharge, over-discharge, overcurrent, and short-circuit protection. This board is best suited for low-power applications such as LED lights, small power banks, and portable electronics.
| Parameter | Specification |
|---|---|
| Battery Type | Li-ion / Li-polymer |
| Cell Configuration | 3S (3 cells in series) |
| Charging Voltage | 12.6V (4.2V × 3 cells) |
| Rated Discharge Current | 5A |
| Max Discharge Current | 6–7A (short duration) |
| Overcharge Protection | ~4.25V ± 0.05V per cell |
| Over-discharge Protection | ~2.5V ± 0.05V per cell |
| Overcurrent Protection | Yes |
| Short-circuit Protection | Yes |
| Balancing Function | No |
| Board Dimensions | Approx. 45mm x 15mm x 3mm |
| Weight | Approx. 5g |
Provides protection from overcharge and over-discharge
Safeguards against overcurrent and short circuits
Compact and easy to install
Suitable for low-current battery packs
No automatic cell balancing
DIY 18650 Battery Packs
LED Light Systems
Small Power Banks
Solar Garden Lights
Portable Electronic Projects
IoT and Sensor Devices
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