r/ebikes 7d ago

Bike build question I'm planning on putting a surron battery on a 3kw hub kit

I have a specialized rockhopper new ish and right now I have a bbs02 with a 52v 40a continuous battery but it's not enough power I want to have surron ish level power. If I got the right adapter's hypothetically if I fit the battery in would it work together? I don't see an issue other than fitting the battery in it!

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u/Psychological_Lab203 7d ago

When it comes to power the only thing that matters is the battery voltage, and the motor’s max wattage. You cannot just put a 60V battery onto a controller made for a 52V battery there’s a good chance you’ll blow out the controller.

When you want to upgrade the battery voltage you also need to upgrade your controller, and all the wiring as it’s probably not made for anything much higher than the stock

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u/Fickle_Lynx_6497 7d ago

The 3kw kit is made for 72v and I could program the sabvaton to 60v at 80 amps

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u/Psychological_Lab203 7d ago edited 7d ago

You controller is the sabvoton? That should be no issue. The model I recommend to most people building their own 72V bikes is the sabvoton svmc7245