[slimthelineman]

novak smart tray is the best way. used them for years when i raced heavy on ni-mh. allows you to choose cel voltage cutoff in .1v increments, will dead short if you need it to and does each cell indipendantly. only bummer is you gotta use side by side packs to use the tray. can find em around for like 25 bucks on fle bay. wanna make your nickel packs last a long time its essential they be balanced BEFORE charging, otherwise sooner or later you will hear the dreaded pop! and your done.