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.