A charging circuit board from a dead battery pack.
And a LED panel from a dead desktop light.
By adding a simple switch, a new camping light were born:
I made a paper box to cover the battery.
With this battery pack charging circuit, the charging speed is now faster.
I used a mobile phone mounting to fix it on a small tripod, and then to use it in actual scenario.
It has been over 8 hours and it's still up and kicking.
More than enough for overnight camping.
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