Radcity. Replace 48 V for 60 V battery

[georgefromvt]

My old 2019 Radcity Ebike works well but battery starting to wane. It has plenty of miles. Radpower out of stock with new batteries. Bike is old but sill rides well but needs new battery. I wouldn't mind extra power. Can I replace the 48 Volt battery with 60 Volt? Will it fry the components? Can the controller handle 60 volts? And anyone know good vendor for batteries? Thanks.

 

[neptronix]

It's very likely that 60v is the hard limit for a controller designed for 48v. If it doesn't have high voltage protection, you will destroy the controller. If it does, it will fail to operate.

The better route is to chose a 52v battery - which should charge up to 58.8v, right below the 60v hard limit of most 48v controllers.

em3ev.com and ebikes.ca are known good battery vendors.

 

[slaphappygamer]

Be sure to check the voltage at the lights. I’m pretty sure they are pack voltage. My wife has a RadRunner Plus and that was the case.

 

[TuomasK]

My old 2019 Radcity Ebike works well but battery starting to wane. It has plenty of miles. Radpower out of stock with new batteries. Bike is old but sill rides well but needs new battery. I wouldn't mind extra power. Can I replace the 48 Volt battery with 60 Volt? Will it fry the components? Can the controller handle 60 volts? And anyone know good vendor for batteries? Thanks.

60v limit for all Rad controllers so 52v battery max. Have 60v battery on my Rad but have upgraded the whole bike (into rocket).

 

[Klaus]

I have a 52v battery on a 2019 RadCity with the OEM controller and it works well. The bike has plenty of go, though I got it used sans battery, so I don't know how it preformed with the OEM 48v battery.

 

[EeedUp_Builds]

Good answers above. The 52v sweet spot on controllers designed for 48v is one of those things worth understanding deeply before buying — it's not just about the nominal voltage but how charge voltage, controller caps, and BMS cutoffs interact.
If it helps, I wrote a breakdown of exactly what changes between 48V and 52V in practice: speed, torque feel, range, and controller compatibility — might be useful for anyone still in the decision stage: 48V vs 52V Batteries — What Actually Changes for Your Ebike Build — Eeed Up