upgrade BBS02 36V 500W to 48V 750W

jtekken

1 mW
Joined
Aug 3, 2021
Messages
16
Hi,
I bought this engine: https://www.pswpower.com/products/europe-or-china-stock-36v-500w-25a-bafang-8fun-bbs02b-mid-drive-motor-bicycle-electric-bike-conversion-kits-newest-version-98?fbclid=IwAR2J03yBdQ_l79PrKMNyQpnhBv32_ocp8UecbogzRIkZ1Lug7iQ96HdZWqI
It is possible after purchasing this controller 25A,48V:
https://www.pswpower.com/products/bafang-8fun-48v-750w-25a-or-48v-500w-18a-new-version-bbs02b-motor-controller-electric-bike-controller-104?fbclid=IwAR0yZThf1V_BpJsg8AEjl6ppjjBvvRUlXjt5NluxKjRIPms8mt9UMX59N9Y
and 48V battery:
https://www.pswpower.com/products/eu-stock-electric-bicycle-battery-dc-5c-brand-inr21700-48x-21700-cells-pack-48v-192ah-36v-192ah-lithium-ebike-battery-fits-1000w-bafang-tsdz2-tong-192?fbclid=IwAR0xHHARGu0wyLTw7PMGG-1TM0XonywN0SHREOYa1kktVmb7nVEuyqDieR0
to use as a full BBS02 750W? Or are there any design differences? Thank you
 
Sorry Now it's alright
 
As far as I understand you need the motor core too, as the winding is different for 48V.
If you only raise the voltage it will run faster and get hotter, but tourque will not increase as you expect from the 750W motor.
A much better idea is to buy a whole 750/48 kit and sell the parts you don't need on eBay.
 
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