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    An Inspirational guy who makes special electric wheelchairs!

    Its very useful for its algo as it monitors the REAL cell voltage, and the real terminal voltage both on charge and off. It can then see when to really slow down, and guestimate the actual cell voltage ignoring the cable resistance and know whats happening. But if you really don't want to...
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    An Inspirational guy who makes special electric wheelchairs!

    I followed a link on my stats page. this: "Avoid BMS Battery like the plague" sig, Is THE BEST ADVICE POSSIBLE. BMS caused almost every battery failure there ever is. They are universally dismally crap for a bunch of reasons! Throw them away now and learn what you are doing! Use a hobby...
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    An Inspirational guy who makes special electric wheelchairs!

    You mean me? :) Take a look here: http://www.wheelchairdriver.com/BM-MK3-lithium-fast-powerchair.htm Built in a bedroom. This is shorter, narrower and lower seat than most indoor only chairs. Also 2 or 3 times faster at true 15mph, has at LEAST 45 real world miles range (45v Lifepo4 3000...
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    Better Balancing

    I charge and balance a 72Ah 13S lithium pack, and have done lots of algo help, and been the cause of quite a few firmware updates on the hyperions. Including the corrected PB charge algo, 36 and 48 volt addition, and much other stuff including the capacity increase from 50Ah to 100 Ah for...
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    Wheelchair inefficiency

    It wouldnt. I need to turn on the spot, manoever indoors, turn around in a van etc. It would drastically improve total w/h per mile but isnt usable.
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    Wheelchair inefficiency

    By definition - because its balanced, its C of G and centre of pressure are in the same spot. Or it would fall over! So it cant suffer at all from this. Whats an X2?? Added, high end powerchairs typically have 24v x 100 or 120 amp controllers, each motor. So on a ramp, curb etc they pull up to...
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    Wheelchair inefficiency

    Burgerman wrote: Well unlike a bike it uses its motors to steer. Or turn on the spot. It does this all day long eating 20 to 40 amps typically on carpet or grass... Why is this method inefficient? Isn't it just a matter of stopping or slowing down or reversing one of the motor? On my actual...
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    Wheelchair inefficiency

    http://www.wheelchairdriver.com/BM-MK3-lithium-fast-powerchair.htm Chair home designed/built http://www.wheelchairdriver.com/BM-MK3-lithium-battery-powerchair.htm Battery... http://www.wheelchairdriver.com/BM-MK3-lithium-charging-powerchair.htm Charging. I did a lot of development and testing...
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