I just bought a power bank pcb for a diy project I'm planning. The PCB requires a lithium ion battery with 3.7 volts as input. The power bank then outputs 5v to 2 other PCBs. Can I use any Li-ion battery that meets this requirement? More specifically, can I use a Nintendo 3DS battery (which meets the requirement).
The other PCBs are a Bluetooth receiver and an amp if that matters.