Rechargeable battery-powered remote control. DIY.
A simple conversion of any remote control to use a Li-ion battery.
Any 3-volt remote control!
I used 13450 batteries taken from e-cigarettes and tested them with a tester...
The goal is to convert the 4.2 volts from the lithium-ion batteries to the 3 volts needed to power the remote control circuit.
This is the simplest method. It couldn't be simpler.