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Rad City 4 - 2020. Bone stock except for the seat. Both RadCity models still have Regen braking. My wife has a RadCity ST and my bike works fine with her battery. There is no external damage to any of the connectors. I still have some hope Rad will honour the warranty so the seal will remain...

I've cleaned the contacts but the problem is internal to the battery. There's no voltage w/ key ON at the output terminals after an initial surge of ≈ 15-16V for about .5 seconds. It appears the Battery Management System has decided to no longer manage to perform.

Yeah that's what it is looking like for me as well. I'm semi-convinced that the BMS failed to deal with a regenovercharge situation and I have some confirmation/corroboration of that but the official Customer Support decision flow chart doesn't appear to entertain that option so I get the...

So another Wednesday (and Thursday) gone and another promise of resolution "by the end of the day" forgotten. I did learn that sending another email to check on the status of your claim knocks the claim back down the priority hierarchy. WTF? Seems like the system a company would use if they...

Thanks, I will. I was told that my further email requests for some sort of answer had knocked my claim back down the priority queue. Some dandy system they have down there, eh? I did get another "by the end of the day" assurance over the phone today. But then again it is Wednesday - I got a...

One week with absolutely zero response to my attempts at contact after a 28APR2021 email from RadPower technical support saying that they would have an answer to my covered by warranty problem "by the end of the day." Caveat Emptor.

Others didn't ask for a laundry list of info (most of what was covered in previous posts) and get butthurt when the answer didn't meet their approval. Although I didn't ask for the help others offered, I was appreciative and responded in the manner the help was offered. Maybe it is just me but...

In the conditions you say, there is a slight measure of voltage for less than a half second and then to zero. It shows voltage for the same length of time when the on battery condition button is pressed when testing that way.

Please note my original request in the first post. I didn't sign on to satisfy your curiosity.

1. a list of things. 2. Yes 3. Voltmeter 4. No. The problem is obviously internal to the battery. I have done only what Rad has told me to do at this point since it is warranty issue.

Yes, I did.

There has been lots of communication but no resolution. It appears that I own an expensive piece of garage art with 147 km on the odometer.

Yep

I am not experiencing the same level of customer service that others claim to have gotten from Rad. That is why I thought I would try the assembled knowledge on this list. These types of forums have proven invaluable to me in my previous life as a flogger of 70's vintage Italian motorcycles so...

Step 1 - No, other than the instantaneous voltage that illuminates the "on battery" charge state lights as described previously, and then no voltage.

When the battery is off the bike and is connected to the charger, it shows fully charged. When the charger is disconnected and the "on battery" charge state button is pushed, all lights light in extremely rapid sequence (less than .5 seconds) and go dark. Charging fuse has been replaced...

Yep

Any idea if that would be a controller or battery item on a RadPower bike? I was assuming that whatever overcharge protection that existed had failed.

My fully charged RadCity4 descended a hill and the battery malfunctioned at the bottom of this half mile hill. Bike display went dead and was unable to get any life at all out of the bike. Pushed it home and the battery shows fully charged when hooked up to the charger but nothing when the on...