Buffalo

Buffalo is a power delivery monitor for Android. It monitors charge level, watts delivered and battery temperature during charging.

This is helpful if you're wondering whether your cable, power bank or charger is working as expected. Android might say 'charging rapidly,' but that covers a wide range of watts and the OS doesn't provide any more details. Buffalo shows how many watts you're getting and charts changes over time.

Buffalo is free and contains no ads. Let me know if you use it.

Because sometimes, buffalos charge...

Updated 2026-09-07 16:31:

Buffalo 1.10 is now on Google Play with support for background monitoring. Just tap the Background chip, plug in, and Buffalo will track until your charging session ends. You'll need to allow notifications the first time you use this new feature.