This seems to be a neat bit of kit, that could be a solution for those with gen 2 Swytch setups that need a replacement (or better) battery
Replacement case kit for Swytch controller, for use with external 36V battery | eBay
Recycle your Swytch e-bike with a new battery! I'm a real fan of the Swytch conversion and when my battery died (not realising I should keep charging the battery over winter when not in use), I took the opportunity to add a higher capacity external battery and fit the electronics into a more...
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