Ebike li-ion fast charger weird result

kgff

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Aug 18, 2019
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so I have an ebike with a 60v 26ah li ion battery a 5a charger
Today after riding till the ebike turned off, it showed both on the lcd(just before it turned off) and multimeter a 51.4 voltage.. I charged it just for 20 minutes and it had increased all the way up to 55.3V ! if I calculated it correctly about 15A current :shock:
Kept charging for another 40 minutes and it got to 57V..
In other time I charged it for 1 hour from 60v to 63v, it's 15%.. about 4A current :?
Is it supposed to get charged so fast when the battery is discahrged as much as the controller can drain it even tho the controlle is only 5A ?
 
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