1. Ttm3

    OP Ttm3 GBAtemp Regular
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    Joined:
    May 16, 2020
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    United States
    I have a switch that works great but the battery doesn't report correctly. It will go from 100% to 50% in about 10 min. I attempted to let it drain till it shut off & it rapidly decreased battery percentage but then sat at 1% for about an hour before shutting down.

    So far I've replaced the battery, bq24193, fuel gauge, m92t36.

    Is there a way to reset/calibrate the battery? I couldn't find anything in hekate. If I check the voltage the battery is definitely not draining as rapidly as the switch thinks it is.
     
  2. Ttm3

    OP Ttm3 GBAtemp Regular
    Member

    Joined:
    May 16, 2020
    Messages:
    212
    Country:
    United States
    Solved!!

    I had 2 of these doing this. They stopped charging at 85-90% I thought it was a hardware problem with either the m92, bq24, or the fuel gauge. I changed each out more than once and nothing changed.

    What I did was:
    Change the settings that let the switch go into sleep mode.
    Turn the switch on and let it sit till it dies (alternatively you could just play the switch till it dies)
    Charge it overnight or for about 6 hours roughly
    Rinse & Repeat

    I did this 3 times with each console and both seem to report and work perfectly now. I did reinitialize one console but I don't think it was necessary. I know it's not good to completely discharge the battery but these console would report 100% to 1% in about 30 min then it would sit at 1% for hours. My logic may be flawed but I was trying to get the switch to learn where the top & bottom limits of the battery were so I wanted to let it die then charge it to 100% then let it sit on the charger for at least another hour.

    Hope this helps someone
     
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