Battery and Time Issue

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Ulikasil910
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Battery and Time Issue

Post by Ulikasil910 »

So I have a Go Ultra I just got a few days ago and when it was on its standard OS, the battery percentage would always read something different. Example: would say 91%, would turn it off for a few, turn it back on, would say 84(seems normal), would turn it off, turn it back on later, would read 94. Thought maybe it was just a issue with the OS that came with it so I went ahead and flashed Batocera onto it. Still does it. However now, the time is never correct either. Set to America/New York and it will randomly change the time the same way the battery will. Any ideas?

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odroid
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Re: Battery and Time Issue

Post by odroid »

The accuracy of the Go Ultra's battery gauge circuit is very low. This is a hardware design limitation that arises when applying a PMIC chip for low-power devices to a relatively high-power CPU.
As explained in the wiki page below, you can increase accuracy by repeating the full discharge-full charge cycle a couple of times.
https://wiki.odroid.com/odroid_go_ultra ... ing_status

Since there is no separate RTC chip or backup battery inside Go Ultra, the time is reset randomly every time you turn the power off and on.

jollygreen
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Re: Battery and Time Issue

Post by jollygreen »

If not fixed after a few battery cycles charging while plugged in sometimes fixes it, if not go into testing mode and seen what the voltage is and if it is taking a charge. If it says full, reset and that usually fixes it

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