Hi guys new to the community, I have an all electric system to do the Lawn yup. And have a bunch of big batteries hanging around that I would like to know If I can use for this conversion, they are 7.5 amps 56 volts link below. Is Bafang allowing costumers to use third party batteries?
https://egopowerplus.com/battery-7-5amp-fuel-gauge/
no, you cannot and do NOT want to use batteries not for their intended application especially not on a high end ebike motor, ie slapping random lawn mower batteries with a bafang. Could cause major issues. furthermore the range on something that low would be weak - just take the amps multiplied by the volts to get the watt hours ie for that battery 420 watt-hours which is very low range but they designed those mower batteries that way.
check out this link to see what batteries you would want to pair with an ebike motor: https://www.johnnynerdout.com/batteries-1
i got the 52v 20Ah triangle battery (1040 watt hours!) off amazon for only $374, which is pretty dang cheap if you ask me for a high performance LONG range battery, this could get you 40-80 miles on a single charge depending on how you ride and other factors. ie its kind of huge and overkill for most people. but just an example for you. Those shark batteries fit nicer on most bike frame bottle mounting points.