Easy build – $6 solar battery maintainer

Using Dollar Tree/Walmart etc $1 solar garden lights, this project allows the trickle charging of seldom used 12V batteries.
A simple project, also useful for old solar lights where the onboard battery has worn out.

A design for better eye appeal, would be to remove the cells from the plastic housings, but the emphasis is on easy.
This project took about an hour to make.

If using new lights, don’t forget the great parts inside.
A battery holder
Ni-Cd battery
Oscillator circuit

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