Motor voltage

[Fred22]

hello friends, i have a b40 problem in turn. i plan to switch to a 3.2v 200ah battery pack. But at the engine level what is the accepted voltage just 104v or can we apply a voltage of 90v or 114v like the zero?
Thank you in advance for your answers.

[Henk1313]

Voltage range of a 28s lithium ion pack (brammo empulse R 2014) is 84V empty and 117.6V full.

so it will for sure accept anything in between that.
I would suggest going with 32S for an LFP pack. this will be 115V full. and empty that would be around 80-89V depending on how empty you want your batteries to be.

[patrick]

hello friends, i have a b40 problem in turn. i plan to switch to a 3.2v 200ah battery pack. But at the engine level what is the accepted voltage just 104v or can we apply a voltage of 90v or 114v like the zero?
Thank you in advance for your answers.

You can, but you'll need to bypass the control logic of VCU and replace the BMS by a new one. There is a Spanish rider that did something like that, but he did not replace the batteries by LiFePO. He posted his work somewhere here