MICRO USB inputs with female, can be directly input to do with cell phone charger rechargeable lithium battery.

And still retain the input voltage wiring joints, can be very handy DIY
Input Voltage: 5V Charging cut-off voltage: 4.2V ± 1%
Battery over-discharge protection voltage: 2.5V Battery overcurrent protection current: 3A
Maximum charge current: 1000Ma