diy plug-in battery charge level indicator for small rechargeable device

January 8, 2024 7:10 AM

I have a small rechargeable bluetooth media controller for my android phone. It does not have a battery charge status indicator of any kind. Is there a way to make (or buy, but I can't find one) a device that can be plugged into its micro-usb charge port and somehow indicate the battery's charge level? This is the device I have: https://www.amazon.com/LZYDD-Bluetooth-Wireless-Control-Smartphone/dp/B00V6OFWAC Thanks!
posted by atm to Technology (2 answers total)

Best answer: Almost certainly no, since it's likely it's just a 'dumb' charging port and doesn't provide any data to the device being used to charge it.

About the best you could do would be to attach something to measure current draw while charging - this would only indicate whether the battery is charging or full, though.
posted by pipeski at 7:24 AM on January 8, 2024

No.
posted by pompomtom at 8:35 PM on January 8, 2024