Recent content by bquick

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    Are this A123 real or fake?

    I emailed him and he says they are used. - Brad
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    Yet another Yellow Ninja 250 Conversion!

    I looked again at the data sheet for the EVP35-12, and it doesn't include the statement about mounting them inverted. Maybe that's only on the -12H? - Brad
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    Yet another Yellow Ninja 250 Conversion!

    Phil, I double checked the data sheet and it says, "The battery is constructed by plates, separators, safety valves and container. Since the electrolyte is held by a glass- mat separator and plates, the battery can be used in any direction and position without leakage." As far as...
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    Yet another Yellow Ninja 250 Conversion!

    Here's my battery holder. On the bottom is one battery laid flat. On top of that are two batteries right side up. On top of those are two batteries up-side-down. This minimizes the overall height. The final battery is on the front. Unfortunately, I didn't take into account that the front...
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    Yet another Yellow Ninja 250 Conversion!

    Phil, I lowered my LVC to 55V. Right off the charger, I can go about 48 mph. After 14 miles (back and forth between full speed and 30mph), I could still do 45 mph. I stopped at 15.5 miles, ending with a long climb up my driveway. When I turned it off, the voltage was 69 volts, but crept...
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    Yet another Yellow Ninja 250 Conversion!

    OK, then that's my problem. I put a volt meter on it and the controller is doing what it's told to do. When it gets to about 69 volts under load, it trips out. Resting voltage is still 73 volts. I'll have to program it for a lower voltage. Thanks for the help.
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    Yet another Yellow Ninja 250 Conversion!

    What do you have your LVC set at on the Kelly? In a previous post, you had it set to 70V. If that's the case, how do you get under 50V?
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    Yet another Yellow Ninja 250 Conversion!

    I switched my yellow Ninja 250 over to B&B batteries and I'm not getting nearly the range that you are. I'm running six 35 ah deep cycle batteries, a kelly controller, and a Perm 132 motor. I set the LVC to 70 volts. It's geared to hit 48 mph when the batteries are fresh (11/60 teeth). After...
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    What's the best high-pin-count connector?

    If you want cheap and easy to get, Radio Shack has some good multi-pin connectors. I think they come in 9 pin and 12 pin. I used them for my battery pack. - Brad
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    Should I sell my LifePO4 and get AGM?

    Yes, that's the way I set up my BMS. Unfortunately, I was never able to keep it running. - Brad
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    Should I sell my LifePO4 and get AGM?

    There is no visible indication of cell failure. I will start with all cells fully charged. My balancing charger makes sure they are all at 3.65 volts. I'll go for a ride and notice I'm starting to lose power when I'm at 50% discharge. I'll put it back on the balancing charger and all cells...
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    Should I sell my LifePO4 and get AGM?

    I'm sure you sincerely hate to break it to me. Tell me how a BMS will save a failed cell. I have a 10AH cell that is fully charged. It loses it's charge after 5AH are drained from it. How does your BMS turn this back into a 10AH cell?
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    Should I sell my LifePO4 and get AGM?

    When cruising, I'm drawing 70 amps or so. I can draw over 200 amps when accelerating hard. I think my Kelly 400 amp controller is the limiting factor. I don't think it really puts out 400 amps. Yes, a working BMS would have saved some of my cells, but won't solve my problem. The BMS doesn't...
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    Should I sell my LifePO4 and get AGM?

    I have a Ninja 250 that I converted this summer. Everything is working well, but I'm struggling with the batteries. I ordered batteries directly from Headway, 80 cells to make a 40 ah pack, 20s4p. I'm charging the pack with two FMAdirect 10S balancing chargers. The charging works well. I...
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    How do you cope with the attention your Ebike draws?

    I have an electric Ninja 250. To be honest, I'm kinda bummed that more people don't ask me about it. Since it looks and rides like a motorcycle, they don't realize it's electric. I sometimes get a strange look as they try to figure out why it doesn't make any noise. - Brad
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