Windows 10: BatteryReport: 25k charging cycles in 9 months !

My daughter run the batteryreport on her graphic tablet (windows 10). The result: 25k cycles, 50% remaining capacity - after 9 months. Now the battery has swollen. How is this possible ? This would make at least 4 cycles/h (if running 24h/day). What could be the source of the problem? The first battery had 55k cycles in less than 18 months and the battery replacement was made by the customer support of the tablet manufacturer.

:)

 

BatteryReport: 25k charging cycles in 9 months !

My daughter run the batteryreport on her graphic tablet (windows 10). The result: 25k cycles, 50% remaining capacity - after 9 months. Now the battery has swollen. How is this possible ? This would make at least 4 cycles/h (if running 24h/day). What could be the source of the problem? The first battery had 55k cycles in less than 18 months and the battery replacement was made by the customer support of the tablet manufacturer.

 

BatteryReport: 25k charging cycles in 9 months !

Dear joeandmarg0
My daughter did run the batteryreport. Screenshots: Batterie - Google Drive
As mentioned, the battery pack was replaced in march 2019. In the beginning it had 50 Wh capacity, specially in dec the full charge capacity dramatically dropped to 25 Wh. At the beginning it took 1h to charge from 20 to 80% and there were 4h autonomy from 80 to 20%.

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Try3, Megahertz, hsehestedt
Thank you for this information. I will forward it to the customer service (not copy/paste - I hope you do not object to this).

 

BatteryReport: 25k charging cycles in 9 months !

Dear joeandmarg0,
I guess, to protect the battery you need a current limit when charging, one upper tension limit to avoid overcharging and a lower tension limit to avoid strong discharges. And this should be preferably built-in in the PC / tablet. The upper tension limit could be in the charger as well.
What did surprise me when I looked at the BatteryReport: After the decline of the full capacity the relative capacity was adapted - if you try to avoid a discharge below 10% you are then at 5% ! And there were charges above 100% !
The tablet will no longer be used. Lets hope there will be an answer of the client service soon.