1.Input Voltage: 4.5V To 8V
2.Output Voltage: Continuous adjustable 4.3 To 27V (Counter clockwise to boost voltage)
3.Charging Voltage: 4.2V
4.Charging Current: Up to 1A
5.Discharge Current: The maximum 2A
6.Output Reference Maximum Current: 5V 1.4A, 9V 0.8A, 12V 0.6A
7.Quiescent Current: About 0.5MA
8.Overshoot Protection: Yes
9.Over Discharge Protection: None ( 2V cut-off boost but does not block the output, output has 2V)
10.Size: 33MM * 23MM * 9MM\1.30"* 0.91" * 0.35 inch

TP4056 3.7V 4.2V 9V 5V 2A Adjustable18650 Lithium Battery Charge Discharge board