




Specifications:
Input Voltage: 4.5 V–6.5 V (USB 5 V typical)
Charge Voltage: 4.2 V ±1.5 %
Charge Current: Default 1 A (adjustable via resistor)
Trickle Mode Threshold: < 2.9 V (trickle current ~130 mA)
Protection Thresholds:
Overcharge detect: ~4.3 V, reset ~4.1 V
Overdischarge detect: ~2.4 V, reset ~3.0 V
Overcurrent: ~3 A (10–20 ms), short-circuit (5–50 µs)
Dimensions: ~28 × 17 mm board size
Operating Temp: –40 °C to +85 °C
LED Indicators: Red = charging, Green = charged/standby