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    18s build with 2x ECityPower bms (6s and 12s) in series

    Hi ; after putting this bms (https://bmsbattery.com/bmspcm/330-smart-bms-513-cells-in-series-bms-pcm.html#/212-discharge_current-20_40a) on a 12s battery from a chevy volt pack, I want to make a 18s setup so putting two in series. The bike has a 500w controller. On the charge side, I have 3x...
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    bms IC 2016

    Hi ; I am researching chips to make a digital bms... It should be interfaceable with arduino and do up to 24s ; found some info on http://liionbms.com/php/bms_chips_options.php, also found some examples with code for oz890 and LTC6802 with arduino, learned LTC has a newer ltc6811. Anyone did a...
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    bms in series

    Hi ; searching for links to know how to plug 2 https://bmsbattery.com/bmspcm/330-smart-bms-513-cells-in-series-bms-pcm.html#/212-discharge_current-20_40a in series for a 18s and 20s setups (would do up to 26s). I know I saw a page about it but search didnt show it to me. Actually, I have no...
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    anti-theft signals to controller

    I have controllers that don't have anti-theft plugs and would like to implement them ; what I've found is that, generally, the signals are : [Red(positive)+ black(power)] on one plug, [red(e-start) + Blue(motor Lock signal) + Green(Motor Lock)] on the other plug [edit : can be on same plug, but...
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    chevy volt battery winterisation

    winter is comming and am wondering how it will affect my vehicule ; Montreal winter can be rough, mostly between 0c and -15c with drops to -30. I never tried my tricycle under -10c (I will not ride under that), I wonder how the result will be (2x 12s in parallel -> 90Ah44.4v.nom battery on a...
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    chevy volt 12s/18s charging & ballancing

    Hi For a long while, people have looked for options that are powerful and cheap for e-bikes ; a respectful bike in 2015 doesn't use lead-acid as there are good options for cheap lithium that are easy to set up. Buying cells that come from cars seems a good option (if you can find them ; they...
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    e-bay Solar Power External Battery Charger Bank

    hi I saw some Solar Power External Battery Charger Bank on e-bay (originally for cell phones) claiming 48000mAh (48Ah?!?) and was wondering what you guys think ; I doubt a 5v48Ah (2A discharge) could get in such a small space for <25usd, then again,if specs are true (even at 20Ah), could...
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    lead-acid electronic desulfation

    I would like to have your advice about restoring acid-lead batteries electronically I have read about adding epsom salt or edta and topping with distilled water but am not sure I want to got that way yet. I also read about devices / schematics that send backpulses at 1Khz/20v to break away...
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    mosfet on sockets

    hi, as I read about possible controller malfunctions, I see that one piece that seems to malfunction and needs to be replaced is the mosfet. I don't personally like to solder and am wondering what your advice is about soldering sockets to the board for the mosfets. Is there a manufacturer /...
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    help me diagnose my scooter

    hey everybody ; I'm a long time reader but first time poster. I have some knowledge of electricity and electronics, a lot more thanks to you guys. Beginning of the summer I bought a used 60v 20ah scooter, which I fixed. When I went to buy it, batteries were dead, was running with charger...
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