1S 3.7V Li-ion 1MOS 3A Battery Protection Board

Single-Cell (1S) Lithium Protection: Tailored for single-cell (1S) 3.7V nominal and 4.2V max charging voltage lithium-ion, LiPo, and 18650 battery cells.

3A Continuous Discharge Rating: Built with a single power MOSFET (1MOS) circuit capable of supporting up to 3A continuous discharge current for low-to-medium power DC loads.

Compact Strip Form Factor: Ultra-slim PCB design allows easy integration inside tight battery shrink wraps, pouch cell tabs, and small project housings.

Automated Multi-Protection Safety: Integrated control IC provides instant hardware-level cutoffs against overcharging, over-discharging, overcurrent, and short circuits.

Solder-Friendly Connection Terminals: Clearly marked solder pads (B+, B-, P+, P-) simplify direct wiring to battery nodes and power output cables.

Board Material: High-grade FR-4 glass-reinforced epoxy PCB equipped with surface-mount power MOSFET and protection control IC.

Technical Specifications:

Series Configuration: 1S (1 Cell, 3.7V nominal / 4.2V peak).

MOSFET Count: 1MOS.

Continuous Discharge Current: Up to 3A.

Board Color: Green PCB.

Usage Advice: Ensure correct polarity when soldering battery terminals (B+ and B-) before attaching the load/charger leads (P+ and P-).

Maintenance: Keep the board clean, dry, and stored in antistatic packaging prior to battery pack assembly.

Essential Single-Cell Safeguard: Position as an essential safety module for single 18650 cells or lithium pouch batteries used in IoT sensors, microcontrollers, Bluetooth speakers, and custom handheld electronics.

Highlight Compact Efficiency: Emphasize how the compact MOS design provides dependable short-circuit and overcurrent protection without taking up valuable space inside tiny device enclosures.

Recommended Cross-Sell Add-ons: Pair with 1S 3.7V Li-ion 1MOS 2A Battery Protection Board, 1S 3.7V Li-ion 1MOS 4.5A Battery Protection Board, 1S 18650 Lithium Battery Capacity Indicator Module Level Tester LED, and ESD antistatic mat 50x40CM PCB Welding Mat.

Featured Collection Star: Display prominently on your LiFePO4 (LFP) Hardware BMS Modules collection page as your standard 1S 3A protection board.