open-source

BQ24074 Solar / USB Charger

Charge a single-cell lithium battery from USB, DC or a solar panel while a separate power path supplies the project.

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License: CC BY-SA 3.0
Source revision: rev B
Last mirror: Sep 10, 2026
Git commit: 844404b10e1a

About BQ24074 Solar / USB Charger

Charge a single-cell lithium battery from USB, DC or a solar panel while a separate power path supplies the project. Original two-layer design for adaptation to ViaGrid; rerouting and testing are required.

Published design files

Power & charging · two copper layers
Open source (CC BY-SA 3.0) · Limor Fried / Adafruit Industries
Mirrored at 844404b10e1a

Canonical source stays in the upstream git repository (and in WalGit after a successful mirror push). Generated renders and 3D models use artifacts/viagrid/bq24074-solar-charger/844404b10e1a87820ee9cb9024d85f67f4bc4bfd/b8005a66e566f515 on the artifact CDN and are not checked into git.