1st charge out of the box settings?

[Ron Asbury]

Brand New, approx 50% SOC.
Manual - Recommended charge Voltage - 54.5V
Manual - Standard Charge Current - 50A

Is this the preferred settings or are there "Better" Recommendations? I'm in no hurry, batteries will not be installed for several weeks.

 

[MisterSandals]

Is this the preferred settings or are there "Better" Recommendations? I'm in no hurry, batteries will not be installed for several weeks.

I'd charge to the recommended voltage but at a significantly lower current. Keep an eye on the cell voltages when one cell gets over 3.4V. Watch for any cell(s) that start to diverge.
If there is a significant divergence, lower the current even more (5A?) so the BMS has sufficient time to balance the cell(s) so you reach 54.5V without a cell over volt condition (~3.65V per cell).

This will educate you on how YOUR battery behaves. You can try at increased charging amps and see how much current it will charge at without BMS action.

 

[Ron Asbury]

Thank you, I will definitely keep an eye on them while charging. I suspected 50A was a little harsh.

 

[MisterSandals]

Thank you, I will definitely keep an eye on them while charging. I suspected 50A was a little harsh.

If i wasn't clear, start with low amps and if that works, discharge and try again higher and higher to see how it performs. Its a great use of time while waiting for other bits.

 

[Ron Asbury]

Understood. Just a few more bits to be delivered this week. (There were a lot of bits )