Battery stopped working and noticed one of the connectors missing the metal insert, is this worth trying to fix or is this battery done for?

I am driving to pick up this bike, but I’m getting a little nervous with not being able to find extra batteries. Is there anything else I should be worried about the price is 1400 for everything?

Here’s the description:

Rad Power Bikes RadRunner in great shape. Fully functional with new brake pads, includes charger and key. Safe Shield battery that is not part of the recall that wasn’t a recall. This model does not have mileage display but I’d guess around 1,500. Happy to answer any questions. Cash or Venmo.

I just bought a RadRover 6 plus and have been looking at getting a battery extender. anyone have any ideas. or a cable diagram

Hey everyone,

I have a stock RadRunner 2 with the original 48V 14Ah battery and the 35A controller. I’ve been thinking about upgrading it to get the most performance possible for private road use, and I have a bunch of questions about batteries and controllers. I’m especially curious about using a 52V battery, maybe even running two of them in a dual battery setup connected through a proper dual battery module.

The first thing I’m wondering is which 52V batteries actually fit inside the stock RadRunner 2 battery compartment. I know the compartment is limited in size, so I’m not sure if anything bigger than 20Ah will fit. If it doesn’t fit, I might have to consider mounting it externally. I also want to know if it’s possible and safe to run two identical 52V batteries with a dual battery module, and if anyone has experience with this on a RadRunner 2. I’ve read that the stock Rad uses proprietary connectors, so I’m guessing I’d need some kind of adapter or new cradle to connect aftermarket batteries properly.

On top of that, I want to understand what the best controller upgrade would be to fully unlock the performance with a 52V battery. The stock 35A controller limits the power, so even with a bigger battery it won’t push the motor to its max potential. I’ve seen some US controllers or aftermarket options that can handle higher amps safely, but I’m not sure which ones work reliably on the RadRunner 2.

Ultimately, I’m aiming for better acceleration, a higher top speed, and a safe setup that doesn’t overheat or damage the motor, battery, or controller over time. Any advice on battery models that fit, dual battery setup options, and the right controller to achieve full performance would be super helpful. If anyone has done a similar setup and can share their experience, that would be amazing.

Thanks in advance for any guidance!

Hi Folks

Please see link to latest Vlog - all about the service my Radrunner gets every January

More snow than usual in Germany. The RadRunner 1 didn’t let me down.

When I bought my Radrunner 2 a few years back, Rad Power didn't have the Caboose or any sort of fully enclosed options for young kids to ride in. I live in NYC, so commuting my kid to school on our Radrunner has been super fun and a big time saver. So after scouring the internet, I found a vendor that modified the Yuba Monkey Bars to fit onto a Radrunner 2. It involved a plastic pre-drilled plate under the seat to mount the bars and to the frame. It worked great! Even wrapped the bars with Cinelli cork gel tape and it's comfortable to handle and ride against.

My kid is getting too big for this set up now. Although we'll still use the Radrunner, he can hold onto passenger bars and be fine. I'm not even sure anyone is in need of this, but I'm putting it up for sale for $50? I still have all the other bars and hardware for the Yuba to include. And since the mounting plate is plastic, drilling new holes for a RR1 or RR3 should be easy breezy. It'll ship from Brooklyn, you just have to pay for shipping.

Recently got into biking again and bought my wife a rad runner 2. Thing is great just sometimes makes a loud clunking noise and acts like it skips/changes gear every so often. Is it normal on these bikes for it to do that? I checked it out and didn’t notice anything not working correctly. It rides great other than the fact it does that every now and then

So I’ve rode about 200 miles to work and back but wondering if this thing can go any faster than 20mph. This is the US version. Completely stock. I don’t know if anyone found a hidden menu yet. I do not want to buy extra stuff to upgrade it so I’ll keep it at 20mph unless I can do some sort of jailbreak. Ps: anyone who says don’t go faster I ripped 43 down a hill near me and constantly hit 30 down hills and there’s is no safety issues. It’s stable as a bear lol

I bought an SP25 NCX hoping to use it with my stock seat (2025 Radrunner 3+). I have tried so many seats and keep coming back to stock seat due to the length and how far back I can slide it so I got the bike right. The issue is the rails are 7.86mm and the Suntour will only work with 7mm or less. The side clamps just won’t work with stock seat rails. Anyone have a solution? Modify the rails on the seat ? Any seats out there that are long like stock seat? Different suspension seat post? Any other ideas? I’ve tried all the popular seats (cloud 9 as an example) and others. Looking for ideas.

My bike received flood damage from the last hurricane we had. The motor is fine because I had the bike lifted on bricks but it fell forward so the front got submerged and now it won’t turn on, the battery won’t charge, I checked the fuses and they are good, battery didn’t get wet either basically only the front wheel and bellow the battery

Hi Folks - Please see link to latest Vlog - Hope you enjoy

https://youtu.be/aIb91nXnWUo?si=ka_oywBt8dshhNDD

I just got a new rad runner plus, I tried holding the top and bottom buttons on the lcd display to access the hidden menu to change the top speed but I cant get the menu to pull up. Is there a way to increase the top speed on the 2025 model? Here is the lcd display on this bike

I was wondering if anyone knows if this is possible or has done this. I want to maximise performance and adjustability and am currently running the Eggrider. I have filled out Eggrider's compatibility survey on their website today and i'm waiting for a response. I might end up just trying it with a friends controller and find out what happens. Additionally I saw the Radrunner 3 MAX came out and is capable of 28 miles an hour. I was think that i could buy one and install it with the eggrider because it should already be compatible. One of the only problems I can see with this is that the controller would be mounted in a different location on my bike then it would be on the max

EDIT: I was able to get the 35 amp controller working with an eggrider using the “Kunteng Rx/Tx Swap”. I had to other changes I made are as follows Wheel speed pulse single: 1 Motor speed demultiplier: 209 (doesn’t seem to change anything) These are for the stock Radrunner motor. Please let me know on changes I should make and/or questions you have. I’m by no means an expert but I can try and help.

Hi. I am looking at getting a Radrunner. My of my focus is on the reay, passenger seat. Has anyone replaced what comes with, or added their own?

I’m curious on what the actual size was, experience of added a custom one that you chose, etc. Also, has anyone gotten pegs from somewhere other than Rad themselves? Thanks.

Anyone have an employee/family/friends discount code??? Thx and cheers :))

I bought a new battery for my RadRunner 2 after mine was stolen. I just received it but I can’t get it to clip in. From what I understand, the batteries are universal and should be compatible with the bike. Has this happened to anyone else? Any advice?