Camera Battery Phone Charger
thingiverse
USB charger specifically designed for Pentax D-Li90 batteries. I've relied on previous versions of these chargers to recharge my phone, which doubles as a GPS device during backpacking trips, but the earlier models have stopped working reliably with newer phones. This updated circuit seems more effective and is significantly smaller in size. When my phone's battery level drops below what's needed for my camera, I usually supplement it with D-Li90 batteries, although I haven't tested this converter to see how well it handles that scenario. It employs a step-down circuit coupled with a USB port. Utilizing a USB power meter can be beneficial for testing purposes. The charger is crafted from Ruby Red and Sapphire Blue Translucent PETG materials by Atomic Filament.
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