I have a Chinese-brand electric scooter. I'm not able to get information on the controller and motor, but the battery is spec'd at 60V 20Ah. I opened the bike up and got to the outside of the controller box, but I haven't yet been able to take the controller out and open it up. I'm a bit wary because of the huge stack of undocumented wires coming out of it.
I also have a 60V Li-ion battery that I connected in parallel with the 60V SLA battery that is installed inside the bike. Fully charged the 60V Li-ion is 71.4V, meaning it should be 17S. I'm wondering what voltage would it be likely that I can drive the controller/motor for increased speed and power? I'm thinking that in all likelihood, I could get away with 18S for a max/nominal voltage of 75.6V/66.6V. I suspect I could get away with 19S or 79.8V/70.3V.
Does anybody have any ball-park idea how far it is safe to take the controller voltage to, given it's rated for 60V?
I also have a 60V Li-ion battery that I connected in parallel with the 60V SLA battery that is installed inside the bike. Fully charged the 60V Li-ion is 71.4V, meaning it should be 17S. I'm wondering what voltage would it be likely that I can drive the controller/motor for increased speed and power? I'm thinking that in all likelihood, I could get away with 18S for a max/nominal voltage of 75.6V/66.6V. I suspect I could get away with 19S or 79.8V/70.3V.
Does anybody have any ball-park idea how far it is safe to take the controller voltage to, given it's rated for 60V?