1S 18650 Li-ion BMS Protection Board (DW01A + FS8205A)

1S Li-ion Battery Protection Board (BMS)

A compact single-cell lithium-ion battery protection module using the DW01A protection IC and FS8205A dual MOSFET. Designed to protect 3.7V 18650 or similar Li-ion cells from overcharge, over-discharge, and short circuit conditions.

Key Features

• Protection IC: DW01A
• MOSFET: FS8205A (dual N-channel)
• Cell configuration: 1S (single cell, 3.7V)
• Overcharge protection voltage: ~4.25V
• Over-discharge protection voltage: ~2.5V
• Short circuit protection: Yes
• Compact strip PCB design — fits inside 18650 battery holders
• Max continuous current: ~3A

Perfect for DIY power banks, RC projects, flashlights, and any single-cell Li-ion powered device.