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  1. J

    Li-ion Battery Voltage vs State of Charge

    Am I doing this right? I have a 14S pack of 18650 li-ion cells. 52V nominal voltage. If a fully-charged cell is 4.20V, and if I "judgement-call" a cell at 3.00V to be fully-discharged, I get 1.20V from fully-discharged to fully-charged. In a 14S pack, that's 16.8 volts from discharged to...
  2. J

    Computer geeks, I need help

    Hi, I'm trying to program the controller for my Bafang BBS02 using the instructions found at https://electricbike-blog.com/2015/03/17/programming-the-bbs02-without-frying-your-controller-and-losing-your-sanity/. I'm using the Lunacycle BBSXX-PROG-CBL Bafang BBS02 and BBSHD Programming Cable...
  3. J

    Help solve a chain drop problem

    This is my first electric bike build. I am using a '90s Nishiki mountain bike frame with short horizontal dropouts, a Bafang BBS02 mid drive motor with a Lekkie Bling Ring, and a Shimano Nexus 3-speed hub on the rear, with stock 19T sprocket, flipped over so that the driveline is good. Under...
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