QuoteThe national standard for electric bicycle batteries caps them at a 48 V voltage, a limit suitable for densely populated urban areas given the typical casual treatment of batteries by e-bike owners or renters. The repurposed EV cells, however, often blow past that ceiling to be offered by e-bike makers as "ultra-long range" models
Voltage doesn't matter for range, it's the Wh. They could simply connect them in parallel and stay at 48 V.
I remember a video of a guy (I think it was somewhere in asia, CN possible) with a, presumably, bike battery in this hand going into an elevator and just before the door closed, the battery exploded.
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