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/
I'm using a 5.0 amp-hour EGO 56 battery on my electric bike, a converted 24in dual suspension MTB with Bafang BBS02 and Nexus 3-speed IGH.
In theory you may think it is a mismatched battery but from my personal experience, it runs quite well on my bike when I'm not using the battery to mow with my EGO lawnmower. The battery doesn't care if it's being used to turn a 24 in. rear bike wheel or a 21 in. lawnmower blade.
In practice, I get about 5-6 miles on a 5 amp-hour battery fully charged with minimal pedal assist. I'm geared with stock Bafang 46T chainring and Nexus sprocket. I've used a Luna Mighty Mini 30T front sprocket to increase torque but had to put the stock chainring back on until I can shim out the 30T granny gear for a straight chainline, otherwise it bites into the plastic Bafang secondary reduction gear housing (fortunately most all Bafang BBS02 parts are easily replaceable).
I'm planning on adding a 4 amp-hour Echo 58v battery to extend my range of travel to have 9 amp hours of available power on the bike.