Originally Posted by Itchy
On really old cells, u can get way with a +20A discharger and a multimeter. I just did that with 3 old packs of Sanyo 3000HV and a GM commander.
It will take forever, and you will regret it, but is possible.
My advice is: Charge the whole pack, and only then disassemble it for discharge (most comon chargers have hard time charging only 1 cell).
Use at least 20 amp discharger. Some old cells will discharge easily a simple bulb, but droop to .5v under high load.
label all the cells and take note of performance values (ie: voltage after 1 min, voltage after 2min, ....)
after reassembling the cells, equalize the packs before charging.
Thanks Itchy great help
So if i understand I need to charge the pack completely then dissasemble.
Then I get 1 cell and put it under a 20 amp discharge and read the voltage after 1 MIN 2 min etc etc the cell with the best voltage after time given is the best cell to put in my pack.
Is there a cut off limit for NICad cells ie 0.9v?
And finally does a Novak smart tray really work better than a standard equalizing tray?