Extra Large Power Bank W/Flashlight V2 XLPB
thingiverse
The ultimate power bank for emergencies: a USB charger with a built-in flashlight, powered by a trusty old car battery. I scavenged a 12-volt lead acid battery from an old jump starter and breathed new life into this beast. This rugged charger boasts two USB outputs that collectively dish out three amps of power. However, when two devices are charging simultaneously, the power is split evenly between them. To light up the night, I added several 12v LEDs to the front panel for a reliable emergency light source. For those who want to replicate this project, I've included a basic wire diagram in the pictures - it may be rough around the edges, but it gets the job done.
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