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    Serengeti Panther / Aeolus EV-500 schematic wiring

    Here you go.
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    EGO 56V 4Ah lawn tool Lithium Ion battery

    If anyone happens to be in the Cleveland (or Detroit) area...I have 4 of the Ego 56V 2AH batteries that I'd like to turn into a battery for my scooter. Unfortunately I don't have the electronics knowledge to do so myself. But if anyone in the area is interested, I'd be happy to compensate you...
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    Serengeti Panther Scooter Won't Run

    Ok I soldered the sense wires back in the new order (leaving the number 15 sense wire free), and attached a 12 gauge wire between cells 6 and the old number 8. I also have it in compression. It looks like the weakest cell is the old number 11, the puffy one, it measures 3.0 V. Should I...
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    Serengeti Panther Scooter Won't Run

    Ok, I had the pack in compression for 5 days, unfortunately it didn't really change much in size. I cut out that dead cell #7 flush with the top of the cell, like you mentioned. I also cut off the sense wires from cells 8-15. I'm confused now on how to reattach the sense wires. I feel like I...
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    Serengeti Panther Scooter Won't Run

    Thanks for all of your help. I think I'll give a go at rewiring it to 13 cells. I'll let you know the results when I'm done!
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    Serengeti Panther Scooter Won't Run

    Ahh, the confusion was my doing. That 3.656 I measured was off of cell number 1, which I didn't include in my initial list. I only measured 14 cells initially, but now I've measured all 15. Cell number 7 has always been dead. Is this the right replacement to buy? This was one of the only...
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    Serengeti Panther Scooter Won't Run

    I guess I'm a little confused....I was assuming that I can't get a reading because that cell is dead. Even when I try and measure the voltage at the cell (where the blue and purple wires are soldered to the strips of metal) I still don't get a reading. I can't check the voltage at the BMS...
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    Serengeti Panther Scooter Won't Run

    I took apart the battery a little more. I measured that cell I was missing...it's at 3.656. The pen is touching cell number 7, the one that's dead. It's between the blue and purple wires, neither of which look loose. Is that what you meant by sense wire? Cell 11 is the only one that looks...
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    Serengeti Panther Scooter Won't Run

    The entire battery is dead, or just the one cell?
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    Serengeti Panther Scooter Won't Run

    Yes I have the same charger that Milou described. I'll take apart the battery further to try and expose the sense wires. Does it have to stay in compression the entire time that I'm trying to take it apart and examine it? And what's the best way to compress it...duct tape or something similar?
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    Serengeti Panther Scooter Won't Run

    Yes I'll take it apart as soon as I get home from work. Unfortunately I'm not sure of the chemistry. Regarding the BMS...it's completely sealed and can't be opened. The battery and BMS are identical to the one Milou describes in this thread...
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    Serengeti Panther Scooter Won't Run

    Alright I just checked individual voltages between each of the 15 pins: 0-1 3.656 1-2 3.351 2-3 3.719 3-4 3.469 4-5 3.431 5-6 3.349 6-7 14mV 7-8 3.319 8-9 3.556 9-10 3.698 10-11 3.135 11-12 3.454 12-13 3.705 13-14 3.356 14-15 3.428 I think I somehow didn't measure a cell...since I only ended...
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    Serengeti Panther Scooter Won't Run

    Here's a video I just shot: https://www.youtube.com/watch?v=yatFOoS2cq4 Everything died before I was able to run the throttle. Sometimes the throttle does actually work, but the wheel turns really slowly. I'll try and catch it on another video. Again, the dashboard lights up like this only...
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    Serengeti Panther Scooter Won't Run

    Ok I'll check the continuity. One other thought: When I have the charger plugged in and the ignition turned on, the DC/DC converter makes a ticking noise. Is that normal? Even if the DC/DC converter is broken, would that cause the motor to lose power as well, or just the lights, etc? Edit: It...
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    Serengeti Panther Scooter Won't Run

    Just to clarify, the problem isn't just the motor not turning, I don't get any power at all...(no headlights, dashboard lights, etc). The picture I posted with the headlights on is something that just happens spontaneously when I leave the charger plugged in. Everything then shuts down after a...
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    Serengeti Panther Scooter Won't Run

    Not really...they disappear into a mess of cables that ultimately goes back to the controller. Yes red and yellow are plugged in at the controller. There are two plugs coming from the controller that are unplugged, but I can't find anything that connects with them.
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    Serengeti Panther Scooter Won't Run

    The red and yellow wires plug into the ignition switch. When I took this picture a few minutes ago it was measuring 39V...but it's really weird, when I first plugged in the battery, I was getting 26V at those red and yellow wires...and it's been steadily climbing and is at 44 V now
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    Serengeti Panther Scooter Won't Run

    Sorry for another stupid question. I unplugged the two ribbon cable from the BMS. Can I check the individual cell voltages by touching the probes between two pins at a time? (ex: black/white, gray/purple, blue/green, yellow/gray from the next cable, etc)
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    Serengeti Panther Scooter Won't Run

    Thanks for the advice, I'll still check the individual cell voltages. Could I connect the red and yellow wires together just for a second and see if the scooter starts? Or would that somehow break it?
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    Serengeti Panther Scooter Won't Run

    One more update: I'm measuring 47V all the way at this red and yellow wire that connects with the ignition switch. Could the fix be as easy as replacing the ignition switch?
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    Serengeti Panther Scooter Won't Run

    Quick update guys, I was getting ready to open up the battery back this weekend and check each individual cell, but thought I'd check the pack voltage first. Maybe I did it wrong, but it looks like it's showing 48V. Should I still open it up and check each cell? Just thought I'd get your input...
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    Serengeti Panther Scooter Won't Run

    Thanks for the tips guys. I'll do some reading on the basics of how to check voltages. Hopefully I can try and narrow down the problem.
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    Serengeti Panther Scooter Won't Run

    Sorry, I didn't mean to sound dismissive. To be honest, I've never opened a lithium ion battery before, but I heard it can be dangerous...is there any specific way to do it so that it's safe?
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    Serengeti Panther Scooter Won't Run

    I actually have the original keys. There's a cover over the ignition slot that can be locked. You then use the octagon shaped portion of the key to unlock the cover. I think the picture makes the battery look more swelled than it is. The blue plastic casing is cracked and is just spread out a...
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    Serengeti Panther Scooter Won't Run

    Hi everyone, I would really appreciate some help here. I’ll try and be as detailed as possible, so pardon the long post. I picked up this Serengeti Panther scooter on Craigslist the other day for a steal (only paid $80). It does not run. Apparently the scooter never worked even when it was...
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