Review: 1200W bulk charger from BMS Battery

[NeilP]

I was looking at making a manual balancer
Cell Logs to monitor the voltage of each bank of parallel cells
and a switch and a bulb for each channel..any that are too high..switch on the lamp.

Ok not automatic or very scientific, but until someone comes up with a high current balancer it is a way to go

[nonlineartom]

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?

[miuan]

remember once you start bleeding high amps, the voltage will sag too much within balance wiring and battery alike. there is no easy way of determining when to shut off the bulb, unless you let the cell settle for 10 to 30 seconds. I do everyhing manually and have developed a good estimate of how long to keep it on, in order to get 10mV down.

[sn0wchyld]

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.