stegger

Dont know if anybody is having the same problem but if you discharge your cells (gp3700) down to .9 of a volt on the GFX, then transfer them to the smarttray and discharge them again to .9. They take an age to equalise. This is on new and old cells. Any thoughts fellas???

SC

Dont be alarmed, the gfx doesnt equalize the cell's like the smart tray does...it just pull's the pack down to a pre-set voltage.

I experience the same thing as you with the tekin trays and the novak flatlines.

SC

Cammer

iTrader: (3)

If you discharge at a lower rate on your GFX it will take less time on the smart tray. I normally discharge at 30 amps, if I want to equalize faster I discharge again at 10 amps and then put them on the smart tray which discharges at about 1 or 2 amps.

polesitter61

iTrader: (4)

I know what your talking about, I just lowered the cut off on my GFX to 5.30 and it will equalize much faster on the tray. Apparently the voltage reading are different between the two devices.

Corner Weight

No, it's that the voltage on the cell is lower with a 30 amp load on it, than it is with a 1 or 2 amp load. At any time, you can have a cell in any state of charge, and the higher the load you put on it, the lower the voltage will read. The GFX at 30A pulls it down to a certain point, and as soon as the discharge stops, the voltage creeps back up again. When you put it on the smart tray, it takes longer to pull it back down because of the lower discharge rate. After all of the lights go off on the smart tray, it shuts off and the cells creep up again. Hit the button after a few minutes, and it doesn't shut right off, it'll take some time again. This is all completely normal battery behavior - there isn't anything wrong with your smart tray or your GFX.