January 30, 201511 yr Which BPM are you talking about? There's about 20 different versions. The one Iin the bike I built for Allen-uk will annihilate any Wooshbike or s-pedelec in a hill-climbing contest. His was only set to 23 amps. They run OK on 30 amps, which would annihilate a BBS02 - if the BBS02's controller didn't burn halfway up the hill, in which case it would be no contest.
January 30, 201511 yr the legal ones, laser marked 250W. I guess all the manufacturers run these at 17A-20A
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