Dual-Function Circuit Board with Smart Protection
This module integrates charging capability and battery discharge protection, allowing simultaneous charging and discharging operations
Key Features & Specifications：
Type-C USB Input Port: Built-in female connector compatible with standard 5V phone chargers
Dual Input Options: Supports direct Type-C USB connection or DIY wiring via auxiliary solder pads
Precision Voltage Control:
Input Voltage: 5V (±5%)
Charging Cut-off: 4.2V ±1%
Over-Discharge Protection: 2.5V auto-cutoff
Current Management:
Max Charging Current: 1000mA
Over-Current Protection: Triggers at 3A
Compact Design: 1.02"×0.67" (2.6×1.7cm) board with 0.085 oz (2.4g) lightweight profile
Operation Guide
Initial Activation
Connect battery to B+ (positive) and B- (negative) terminals
Apply 5V power via Type-C port or solder pads to activate protection circuit
Charging Indicators
Red LED: Charging in progress
Blue LED: Charging complete
Load Connection
Attach devices to OUT+ and OUT- terminals (e.g., voltage boost modules)
Important Notes
Charger Requirement: Use 5V power source with minimum 1A output capacity
Circuit Reactivation: Re-apply 5V input if protection system enters sleep mode after battery disconnection