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    LTC 6803 BMS System

    Hello, I start this thread because i want to share my development with the community. In 2008 i launch my project EV KTM. The first shot was with an analog BMS HVC and LVC board. but this makes me not happy. 2009 i began my own version of my bms based on LTC6802-1 with a complete...
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    LIFePO4 BALANCER Do you know the Volt Blocher ?

    Hi Doc, i think it is the normal shunting circuit with tl431 with powermosfet. i use this circuit in my first bms but with 8A current. irl3803 and 10mOhm shunt. so it is very easy. bg biggs
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    Cell internal resistance meter

    i live in vienna 10 minutes away from the next conrad store bg alex
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    Cell internal resistance meter

    hi, i have no camera for a video but i can send you a pic and the manual. the english part starts on page 22. and the france part on page 41. i think the france part is yours. at conrad it costs about 76,95 Euro i don't know how much the shipping costs from vienna to you. bg alex
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    Cell internal resistance meter

    hy doc, i know why he is using only 2 wires: he measures only 0.5 ohm and 1 ohm!!! maybe for measuring resistance of cells for pairing it, thats ok but if you want to know the Ri of the cells absolute i don't think that this is ok. with the rim 1000 the current goes up to 12A!! i use the...
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    Choosing the right connector and wire size

    the connector is specified for 120A cont. and 280A for 10 sec. they made for battery systems. and so it is the right choice for my application. (KTM LC4 electro. 72V 40Ah, Kelly, Perm 132) also quantya and blade xt use this one. and me to. to seal this connector is a lot of work. and i use a...
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    Choosing the right connector and wire size

    hello doc, in my system i use connector from http://www.andersonpower.com and there i use the SB120 you can choose the wire from AWG2 (33,6 mm2) to AWG6 (13,3 mm2). they have there own onlineshop: http://store.andersonpower.com/SearchResult.aspx?CategoryID=29 i hope that helps ps: i hope you...
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    The LiFePO4 Headway cell 38120P TEST REPORT inside

    I am located in vienna Austria. I think i would build my own CA because i want to have a grafic display and i don't want to have an CA and for the BMS with the new ltc6802 i need an extra bordcomputer for configuration of this chip. my analog BMS is ready know and i will make the pcb board. with...
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    The LiFePO4 Headway cell 38120P TEST REPORT inside

    hello i am still here, at this time i am working on the BMS and i will finnish it this week. the only thing that i can say is that at my first test with my pack (24s4p) the performance of the bike is not bad. we draw peak current of 350A and 80A continue. Atn the continue current the voltage...
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    The LiFePO4 Headway cell 38120P TEST REPORT inside

    Today my replacement cells arrive they are the blue one. i measured the resistance and the voltage U0. Here are the results: Cell U (01.10.2008) Ri(01.10.2008) HH19-10467 3,337 7,800 HH19-10549 3,336 8,100 HH19-10559 3,336 8,500 HH19-10805...
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    The LiFePO4 Headway cell 38120P TEST REPORT inside

    no the rim1000 unit is an measurement unit for battery with 0.1 mOhm resolution. yes for the first time i also use this formula, but with the rim 1000 it is much faster to get an result. no i don't think so because i fastend the screws last when the pack is in position.
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    The LiFePO4 Headway cell 38120P TEST REPORT inside

    Hello, I have now the results from my 38120S cells: Headway 38120S (lot: HH06 HG20) Delivery from 19.08.2008 Unit U(V) Ri(mOhm) 1 3,335 15,000 2 3,333 13,500 3 3,333 17,200 4 3,330 20,000 5 3,335 14,000 6 3,331 19,900 7 3,335 15,200 8 3,334 13,500 9 3,335 12,800 10 3,333 19,300 11...
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    The LiFePO4 Headway cell 38120P TEST REPORT inside

    Hello Steve, that was what i want from victoria, my cells came in the paper pack. but i think that they are the same cells like mine. i have gott them 3 weeks ago. and i have build my pack 24S4P. Today i measured the resistance for 4p and it was 3.7 mOhm. kets say that one cell is about 16...
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    Even Newer 4 to 24-cell Battery Management System (BMS)

    hello, my name is alex and i am new to this forum but i am reading it for a while. in the moment am building a BMS based on this thread. i ordered my TC54CV210 directly from microchip they have an web shop and i got my parts promt to vienna. i have paid a little more but i have got it. i...
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