Recent content by nedfunnell

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    Waking up CALB SE LiFePO4 after years in storage

    Thanks for your input. I will check the cells as I have time. I don't know if the all-in-1S method is terribly practical with my cells all in a unique geometrical arrangement to fit the bike, but I suppose I can if I need to. I am thinking of adding the spare 25th cell that came with the bike...
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    Waking up CALB SE LiFePO4 after years in storage

    Thanks for your response. I have it on a 12A charge now and I'll check the cells when it's nearer to full so make sure I don't have imbalance that could put some cells over the maximum safe limit, and again after it rests. I like to keep cell voltages in a spreadsheet, conditional formatting...
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    Waking up CALB SE LiFePO4 after years in storage

    Hello all, I bought a partly finished electric motorcycle for my second project. It has 24 CALB SE cells. It was in storage a long time before I bought it. After I bought it, life got in the way and I didn't do anything with it for 2.5 years- except take a test ride around the block and find out...
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    HP ESP120 48V (51.4V) 57A 3KW Server Supply Thread

    It was working the last time I checked, but I don't have it in use so this post was probably the last time I took it off the shelf. Still no idea why the DC would have done anything- if it did and it wasn't just random. I've been thinking of trying this PSU off of 360VDC from my Chevy Volt, I'll...
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    HP ESP120 48V (51.4V) 57A 3KW Server Supply Thread

    OK, news from my DC input experiment: The PSU does not function on 220VDC input. However, interestingly, it started to function on AC just fine after I tried it on DC! I didn't try it on AC today before I tried DC- I should have. I'm happy it's working now, and I hope it turns out to be...
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    HP ESP120 48V (51.4V) 57A 3KW Server Supply Thread

    If I ever get mine going, my thought is to have it onboard as a mountable module in the same place that an exhaust pipe would go- my Native even has the exhaust bracket still on, so that's an easy mounting point. Maybe I'd put it inside a pipe or something to keep it dry in case I got caught in...
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    HP ESP120 48V (51.4V) 57A 3KW Server Supply Thread

    I am not qualified to help with any of that, but I lend you my moral support! I am excited to see more activity on this thread. Still hoping my curiously-dead/not-dead ESP120 can be made useful again.
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    HP ESP120 48V (51.4V) 57A 3KW Server Supply Thread

    Glad to see some new activity on these units. Still nobody has ideas about the problem of the supplies simply failing to come on after attaching output cables? A few people have had this issue.
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    HP ESP120 48V (51.4V) 57A 3KW Server Supply Thread

    Well, with the help of three long, skinny extension cords and an alternate 240v load, I got the input voltage down to 238v, and observed no change in the situation. Nuts. Any new ideas? Edit: Did an Rshunt adjustment on my normal charger, got it making 2.6kW. This drew the source down to 226v...
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    HP ESP120 48V (51.4V) 57A 3KW Server Supply Thread

    OK, I have a theory as to why mine won't work: The power supply is rated for 200-240v AC input voltage. It's probably expected to be used in 208v applications most of the time. When I measured just now (late at night), the input voltage I am giving it is 248v. Perhaps it is shutting down output...
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    HP ESP120 48V (51.4V) 57A 3KW Server Supply Thread

    That would be super neat, but I am not a competitor. I will only be doing the first half of the course. My bike has no aeromods and is 5.5kWh, so I can't finish the whole course with the pack. I have been enjoying seeing what the supercharger can do for Benswing, though!
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    HP ESP120 48V (51.4V) 57A 3KW Server Supply Thread

    I am having the same trouble as Kin and Artur- my ESP-120 does not give DC output. It did when I first tested it, no problem. However, after I soldered some wires onto the output terminals, I get nothing. Just 3mV. I followed JoeG's advice to remove the output board and inspect for any heat...
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    4kW HV Meanwell + server PSU charger

    Howdy folks, I was going to reply to this thread where this subject is discussed, but decided not to necro it and derail it from the OP's build, and thought ES would be a better forum for this discussion. I would like to double my electric motorcycle's charging speed. I have a 22s Leaf cell...
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    ESP-120 DC input

    That gives me some confidence, thanks. Any suggestions for a fuse good 250VDC in an easily used package?
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    ESP-120 DC input

    I would like to run my ESP-120 directly from the hybrid battery of my Prius, which is 200-250vdc. My Meanwell RSPs will run on DC, my Sony APS-162s are supposed to in some specs, but I don't know about these. I have not found an official spec sheet anywhere. Anyone know if these would be happy...
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