Joel Lagace

iTrader: (4)

Sorry guys i was thinking the charger not the tray

ray3619

i think you can find several threads about waking up ib 4200s , boom ,ray

glassdoctor

iTrader: (4)

Yeah... charge them outside in a ammo box... if there is no boom then the next step is to see how many cells are still good.

These cells tend to go bad after being stored for months without use.

wog....supraman

iTrader: (3)

yea, i charged mine at 8a on a daily basis

not xactly the smartest thing 2 do!!

lucky they didnt go boom...instead they went.....dead!

bigemike

iTrader: (36)

actually I have had really good results waking up 4200's by taking them all the way down in a tray and dead shorting them. They might fals peak once in a while, but you will see the cells come up. All of my new packs have been deadshorted since I got them, and they are better now than they were when I bought them.

I usually use a piece of solder or a piece of wire to short them with.

also you need a tray that will take them all the way down to 0v per cell

I use a integy 030