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So I’ve gone down the rabbit hole of learning about batteries as I want to upgrade my sterling pearl scooter to a lithium battery to take advantage of faster charging, better capacity, and longer lifespan. I’ve found that the voltage of most batteries is extremely variable. The LiFePO4 chemistry I want to replace my AGM cells with can charge to a slightly higher voltage than the AGM batteries and I want to just check that the control units can handle this slightly higher voltage?
The 22ah batteries I have at the moment have a nominal voltage of 12v (multiplied by 2 for 24v). I know that when an AGM battery pack is fully charged it’ll be higher than 24v but I can’t find solid data on how much higher.
The raw lithium cells I want to get for my new battery have a nominal voltage of 3.2v each (3.2×8 cells would give me a nominal voltage for the pack of 25.6v), but charge to 3.65v at full capacity (3.65×8 is 29.2v).
My question is: are there any published specifications for what voltage variance different ECU’s are capable of accounting for? Is 5.2v higher than nominal voltage going to blow anything up? I’ll likely only charge to 28V (3.5v per cell) to extend the lifespan of the battery pack. Do people think this will cook the electronics?
Thanks for the help.
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