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  1. P

    High Amperage BMS suggestions

    I'm putting together a new build in a Q76 frame with a highish amperage battery. Ideally the battery will be 21s 17p 25R cells (340amp max dissipation) with a bms that is under 76mm wide and can be attached to the frame for heat dissipation if necessary. The controller is a BAC4000 which will...
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    High Speed Commuter Suggestions

    Currently I have a beat up mountain bike running a 9c motor at 48v 40amp. It was garaged for 6 or so due to battery damage. Recently I picked up an old stock AllCell battery to bring it back to life. Unfortunately, the battery is way weaker than the 52v it had prior and after 16 rides...
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    New battery advice

    I'm seeking a high performance utilitarian (and ideally secure) ebike. I had a 48v (52v charge) 40amp ebike. It's an circa 2006 trek with front suspension and cable/rib brakes. It has a cycle analyst, nice continent standard hub motor, and a gen 2 grinfineon infineon 40a controller. My...
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    Battery Repair/Rebuild

    Hey, last fall my battery died. I believe there are a few bad cells. It's a triangular A123 battery glued and soldered together by CellMan. Great pack while it worked, but something obviously happened. Basically it charges to full capacity, but then drops by about 8 volts and looses a...
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    A2B vs Custom Build

    Hello everyone, I'm new here and looking into e-bike options. I have narrowed myself down to 2 possibilities. The first is an A2B Metro. I have the chance to pick one up for $1,200 new, if i act soon. I like the build quality and look of the A2B, but i worry the speed (limited to 20mph)...
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