18650 battery 3.7V to 5V 2A boost module DIY rechargeable power supply board
Can be connected in parallel 2-6 18650 batteries! Input port: MicroUSB (android port). Output port: USB. Dual USB output;.
Can be connected in parallel 2-6 18650 batteries! Input port: MicroUSB (android port). Output port: USB. Dual USB output;.