i got my brother an lectric xp 2.0 and nothing but battery issues. Error 25 mostly, he hardly ran down the battery to zero. I got a shed and stored it in there, but problems got worse and we asked for a replacement bike when the controller went and the battery kept killing in the middle of a ride, not even reaching range. He charged the battery indoors, followed all the advice, etc, nothing helped.
Lectric tech gave up exchanging parts and we took it to REI to have the connections checked, etc, his second bike from Lectric works perfectly (though we bought the original battery) even with the first bikes battery, thats so odd about it.
Ok, I bought myself a rad expand 5, not wanting to the same route as my brother. I followed his pattern of charging, riding, riding the bike down to 50%, and my bike acted squirrelly too, showing error 25, the voltage and power displayed was all over the place. I was fortunate to find a Rad mechanic look at my bike. I looked at the you tube video 5 tips on batteries, etc, not to hot, cold, drain to zero, then recharge. Lithium Ion batteries are unpredictable and unstable. The Rad had longer periods of time between problems, but now my original battery is dead, tried to change the fuses, I am not a mechanic. We are not off side streets, jumping or climbing stairs or any of that nonsense.
I seen some electronics on battery blenders, Data2X, and combiners. Some claim they have electronics in their little boxes for figuring out overcharging or overvolt, etc, etc, etc.. Combiners have a Volt range of 30 or less, when batteries are 48V. Cars have had belt driven alternators for decades. not talking about regenerative braking. but if a trickle charger goes at 2v and hour, why cant someone make a strap on alternator to the front tire to keep the battery charged, and use some of these electronics so the battery doesnt burn up?
Car batterys of Iron and water usually can be overcharged, yet we are only talking about 12v.
It would be great if they made a nuclear waste battery that lasts 38,000 years and never needs a charge. But it puts out electricity at a lower volt than an e bike needs. Yet they are talking about putting them into EVs. Too make matters worse, battery connectors are not standardized in any way unless you use a combiner. I got 601 miles on my Rad bike before my battery failed. no clue why. And why stay with lithium that causes fires when there are sodium - ion batteries being made? Now I wait for the repair guy again, probably buy another battery, charger, fuses and get a sledgehammer, while I am at it. After 1 year, I am afraid to say, I am no wiser on why these bikes work or fail. thank you.
hey friend. i understand your issues. your testimony is a perfect account of why its best to go custom ebike/emtb and to avoid buying premade ebikes, for many reasons. most obvious is youre locked to the manufacturers frame integrated motor / battery setup. often they are mass produced, cheap, and the batteries are cheap too, lower quality connections more prone to failure, not as vibration resistant, too heavy/old cells, any number of factors, etc. what you want to do in this scene to avoid buying depreciating premade junk ebikes which end up not lasting very long, with central points of failure like you mentioned, a battery or motor fault. the key is finding the best quality mtb frame for you and your riding style/ terrain. then find the best suitable motor and custom battery setup, aiming for quality. it will cost more but its worth it. think of the number of bikes people go through, end up breaking down or not using much, and accumulating. or you can cut to the chase get the right bike for the right job, put the best components on it, and in the long run you save going custom and you have less bikes to have to sell/repair/trash. as far as batteries you want to get quality cells and construction usually from a custom battery maker, also knowing how to take care of lithium ion cells properly is what you want to be aware of. a good guide here. https://bicyclemotorworks.com/2022/06/22/e-bike-battery-101/
going custom DIY emtb with the ability to upgrade and change every part, improving the bike over time, focusing on keeping your frame in good condition is the way to go. also, theres new lighter emtb motors just around the corner as well as new lithium graphene batteries with huge advancements. check out johnnys vids ion youtube you can get an idea of the bikes he converts. im big into full susp custom emtbs with the best parts. hope this helps