Laptop not working if charging cable not connected.
It must be the cable is connecting and charging to startup the Laptop.
If disconnect the cable while Laptop is working, it take little time then shutdown without any notification about battary and battery about 90 % which it means that the battery is not the reason.
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Hi,
The E5470 was produced in 2016, if you have not had a battery replacement then it’s highly possible that the battery may charge to 90% but is no longer able to deliver enough current to maintain laptop power requirements.
You can also remove the battery and check voltage output to the charging tabs on the laptop to confirm that the charger is delivering correct voltage to the battery.
You can also check voltage on the battery itself to confirm what voltage it has when removed (90% reading before you removed it).
Hope this helps
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