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  1. E

    Battery Dies with full charge, then works after cycling key

    Update: 9/2/17 @ 1:57 PM PST: When I shifted my gears into 24th speed (I have BBS02) then when I pulsed the brake I could get the battery to fail here in my living room on the stand. So all 13 series group tested the same right after the time of the fail. But maybe the point is I need an...
  2. E

    Battery Dies with full charge, then works after cycling key

    "Updated question after reading your related post. I see it is done with connecting external loads to the battery". Thanks.
  3. E

    Battery Dies with full charge, then works after cycling key

    "I am doing this testing will a fully charged pack"
  4. E

    Battery Dies with full charge, then works after cycling key

    QUESTION to Telemachus: (1) How would you put the bike/battery "under load" without riding it. Riding it is ruled out because I can't ride with an open disassembled battery in the first place let alone test. I assume you mean on an indoor lift/stand. I tried using the two ways I could...
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    Battery Dies with full charge, then works after cycling key

    I took the battery out the case then out of the insulating jacket. All the cells test out 4.16 volts. Right now the pack measures 54.2 volts. Again, the problem is it runs great then randomly dies. If you unplug it or cycle the key switch you are good to go for 1/4 mile or 100 feet, then...
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    Battery Dies with full charge, then works after cycling key

    Thanks GalFisk for the reply. Your suggestion will be my next move. I could replace switch or BMS if needed. I am building a kit battery presently just for the learning fun of it, and most of the big packs I wanted were out of stock everywhere due to summer buying surges.
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    Battery Dies with full charge, then works after cycling key

    Thanks Dogman Dan for the reply. Just for the learning curve advance I will open it and let the bike rip on the stand. When it fails, with the battery open I can measure into-output on the BMS. I am into batteries recently because I am building my second one using the Vruzend kit with some...
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    Battery Dies with full charge, then works after cycling key

    Hi Everyone in the Ebike world I have this problem with a 10 Ah 48 volt battery. It's was new in August 215 and has about 60-80 charging cycles. Here is the issue. It charges fine and reaches 54.1 volts when charged. It holds a charge for months and months. I ride a mile or less and the...
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    My full Battery shows red-no power ONLY when engaged

    Thank you for the reply. It is fixed..here is what was wrong: I bought a new kit that did not fit the bike (my dropout are too narrow) . During the removal, and storage on the motor side of the wires there is a small 2 wire connection with lost the male end of a connections. This...
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    My full Battery shows red-no power ONLY when engaged

    I have a reassembly problem I could use a hand with I took this bike apart then reassembled it. I bought a better conversion kit that did not fix the dropout width...rats dammit...anyway. Here is the problem: I have a full battery (Luna Juice 14Ah rear rack mounted). When I engage the...
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