nonlineartom wrote:Neil why not attach a relay to the resistors on the back of a battery medic, when it balances a cell it will pass a current through the resistor, this could trigger a solenoid lighting the bulb and draining the cell quicker, when it's equalised the battery medic will stop the current flowing through the resistor and the relay will click off. Could it be that simple?
you mean like this?http://endless-sphere.com/forums/viewtopic.php?f=14&t=31313
not quite a lightbulb, but works a treat (well, so far, early days for me yet). seems to drain about 600mA from my estimates. (750mA peak, but it cuts out about once a second for a moment, I think to try and get an accurate cell V reading).
A relay would probably allow you faster drain, but I'm not sure you'd want to push more than an amp or two through the balance wires for too long. half an amp should be able to balance cells pretty quick anyway, unless there waaay out of wack.