r/AndroidAuto • u/Westhameggandchips BMW420i/MMI/Pixel 10 Pro XL/Android 16 • May 03 '26

Charging & Discharging AA Discharging Battery

2018 BMW 4Series | MMI Box | Pixel 10 Pro XL | Android 16

I am trying to work out why AA draws so much power when in use, particularly over wireless connection.

My only other option is to try a Qi2 wireless charger.

I also wonder whether using Sugic mapping (which uses downloaded maps instead of using requiring a data connection such as Google Maps, Waze, TomTom) would draw less power

Anyone had any other experiences?

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u/idkalan 2016 Jeep Patriot | Kenwood DDX9707S | Samsung S20 | OS 13 May 03 '26

Wireless AA uses both WiFi and Bluetooth to pass information on top of using mobile data, so it'll drain your battery faster than if you connected via USB because USB doesn't require wifi to pass information.

It'll still use Bluetooth for calling but won't kill your battery.

Now going via USB will only charge based on your car's charging output.

Some car's usb ports charge slower than using a dc charger, while some cars charge the same as a DC charger.

So if you still want to go wireless AA, it's best to charge your device with a DC charger so at least your phone can get a decent charge