48V ebike battery (max 54.6V) with 48V controller question?

Harry

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I am building an ebike kit with a 13S 48V battery made up with 18650 cells. The kit is a rear hub with a 1000W 48V motor. The batteries maximum voltage is 54.6V but the controller is only rated to 48V. I'm wondering whether it is safe to charge the battery to full capacity since the voltage will be higher than the controller's voltage?
 

ebikesforum

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The voltage of an electric bike controller should be the same as the motor and battery - so you'll be fine with that controller.

48V is your ebike batteries nominal voltage - or average voltage. It will go higher than that voltage when charged and lower than that voltage when discharged. When a 48V battery is discharged it will be around 42V. When you charge it, it will be around 54V at full charge.
 
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