Suggest LVC on 48V?

[PWJM]

just finished putting together a rough version of my new and first ebike build!

I'm using a 48V NiCad 5C 8AH Battery with a Clyte 406 and 36-72V 20A pedal first controller with a cycle analyst from Ebikes.ca and was wondering if anyone has a rough idea what I should be setting the LVC to on the Cycle analyst for this particular battery pack. Its resting voltage fresh off the charger is actually 55v or so.

 

[Ypedal]

nimh and nicad = 1v per cell lvc

48v = 40 cells = 40v

 

[Toshi]

what's a good setting for LiFePO4? 55.9V hot off the charger, more typically right around 49.xV after a good ride.

 

[Ypedal]

what's a good setting for LiFePO4? 55.9V hot off the charger, more typically right around 49.xV after a good ride.

Absolute max low for LiFePo4 = 2.1v under load per cell.

 

[Toshi]

what's a good setting for LiFePO4? 55.9V hot off the charger, more typically right around 49.xV after a good ride.

Absolute max low for LiFePo4 = 2.1v under load per cell.

thanks for the reply. does this 2.1V/cell guideline hold true for my 15-cell prismatic LiFePO4 pack, too?

 

[Ypedal]

Yep.. i have quite a number of those exact same cells.. :wink:

Those 12ah cells are good up to 40 amps, above 2.7v for most of the discharge.. then below 2.4 it falls fast..

 

[kazbluesky]

Thanks Ypedal, Ive been wanting to know about LVC for 48v for a while but never got around to asking. Thanks.