SammyZ

iTrader: (138)

Why does everybody use a .9v cut-off discharge tray for their IB4200's if nickel metal hydrade cells DO NOT need to be deep discharged?

Jack Smash

iTrader: (33)

It's not for deep discharging, it's for getting all the cells to the same point before you charge. NiMH cells need to be stored with charge in them.

Joel Lagace

iTrader: (4)

Thats right. This will ensure that none of the cells get over or under charged. If they all start at .9v at the start of the charge you have a better chance of a complete charge of all cells.

For stock racing i store the pack after the run(as there is lots of run time left over)

SammyZ

iTrader: (138)

I see, so equalizing all the cells before the charge is best in order to get a complete equal charge of all the cells. So all a racer would need is 1 Novak smart tray?

Johnny9s

I only ever used 1 novak smart tray. It worked really well. You may want to look at the new Tekin battery nurse as it will actually keep your cells at .9 for as long as they are plugged in and you can connect multiple batteries to it.

Check it out Battery Nurse

Jack Smash

iTrader: (33)

As long as you have something to pull most of the charge out first you should be fine. I discharge with my ICE down to .9v. Then I wait about 10 minutes and then put it on the Novak. This allows the voltage of the cells to come back up above .9v before putting it on the Novak.

Yeti35

iTrader: (5)

The Novak SE tray does this as well.

Joel Lagace

iTrader: (4)

FYI they hold them below .9v but do not prevent the cell from going below.9 .8 .7 .6v ect ect ect..

So dont think u can just leave them on there for ever.

wingman2

The only problem with discharging most of the capacity out of the cells using a charger, is that the pack gets discharged as a pack, not each cell meaning that one cell could be well below .9v whilst another could be a fair amount above.9v. I usually leave whats left in the pack and then use my Trinity discharger to get each cell down to .9v before using them at the next meeting. So far, so good, no probs!

SammyZ

iTrader: (138)

so trinity has a tray also that does the same as the smart tray?

wingman2

yeah, the DPD. Do a search on here, lots of talk on this unit.

march to my own

the dpd is good but it takes forrrrrrrreeeeevvvveeeeerrrr!!!! to discharge even from 3.6...

stick with a Novak tray

wingman2

yeah, your right about that! HAs anyone tried to use the pulse discharge feature of the discharger and then reflex charged their packs up? From what I understand, by doing this is reduces the bubbles (for want of a better word!) inside the cells reducing the IR. Is this right?