Tuesday, October 24, 2017

samsung galaxy s 2 - "Charging paused. Battery temperature too high" while connected to car charger


I have a Galaxy S2 with ICS.


When I use it in my car, while it is charging from a car charger, I occasionally get this popup:
"Charging paused. Battery temperature too high"


Charging paused. Battery temperature too high


Also Waze is running while this happens.




  • Is there anything I can do to prevent this from happening?

  • Does this indicate that my car charger is defective?



Answer



Your charger is fine. Only your phone is running hot due to heavy usage.


Your phone has a few components that dissipate heat if heavily used:



  • The processor when used heavily by an app (yours has 2 cores)

  • The graphics chip when your app uses OpenGL (also for screen composition)


  • The display when lit (depending on the brightness)

  • The battery itself (when charged or discharged heavily)

  • The modem also needs rather much power for 3G/4G/LTE data transfers


If this all above leads to a high battery temperature a safety mechanism kicks in for security reasons (LiIon battery technology needs this supervision, you may have heard of burning or exploding consumer tech)


Reasons: It's mostly a mix of all things above. Maybe it's also a bad programmed app (requires too much computation, keeps CPU awake, etc.).


What you can do:



  • lower screen brightness

  • underclock your CPU via SetCPU


  • Is Force GPU rendering in the developer settings enabled? If so, disable.

  • Try another app or file a bug report for waze (maybe)

  • Does the app work also when the screen is off (I'm not sure what it does, maybe it has speech output that doesn't require you to look at the screen)

  • maybe it's due to your model (I heard the i9100G generates more heat)

  • Switch to 2G only in the mobile networks settings:
    Settings->Wireless&networks->more->Mobile networks->Use only 2G networks (saves battery)


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