Always a big discussion in the pits...... give your input.......

How to discharge your batts as to train them to what they experience in the car during an Oval run for stock racing..........

I know what I do but what is it that you do different......

I just take a box wrench and place it across the the terminals of the battery. When the fire goes out, and the smoke clears the battery is fully discharged! Well maybe not...
After my run, I finish them off on the GFX down to 3.6 volts (0.9v per cell), and then put them away when cooled a bit. Before charging I equalize on the Integy Zero 30.

I discharge at 35 amps down to 360v then after thy cool put a charge back in for 15 sec so thy won't drain down to far while not being used

Always a big discussion in the pits...... give your input.......

How to discharge your batts as to train them to what they experience in the car during an Oval run for stock racing..........

I know what I do but what is it that you do different......



Training thease batts is a myth !When you come off the track for almost any type of racing there is no need to dump your packs at 35 amps especially for stock class . Back in the day when we were running 1700 and 2000 s we paid alot of attention to this we ran from the track and dumped are packs right away to see if we had 30 sec left and if we did we could gear up are mods or run a hotter wind .But to do that today just gets the batts hot and pushes them to much .The battery has already been cycled zaped and matched several times. Just let the pack cool down and dump it at 25 amps this will be fine that your not waiting all day and still pulls the pack hard but there is no need to think you have to re train your pack ? Hope this helps just my .02 :wave:

Ahhhh Dave... a man after my own heart :) I personally have found there is no need to discharge the pack fully once you are done running with the new NiMh packs. I have packs that have over 30 runs on them and have never once been fully discharged, after my run I just put them away until I use them next and I've have seen no loss of performance that I can feel.

Of course I could be wrong but have yet to find anyone that can prove otherwise ;)

But then I also believe that cycling your packs just see what the "numbers" are does far more harm to your packs then anything else you could ever do to them (short of outright abuse) :)

Is anyone seeing any difference with the new individual cell dischargers such as the Much More CTX-D's? VS Discharging on a GFX, I've been using my CTX-D for a few months now and can't really see any difference? Better or not?

Is anyone seeing any difference with the new individual cell dischargers such as the Much More CTX-D's? VS Discharging on a GFX, I've been using my CTX-D for a few months now and can't really see any difference? Better or not?


the ctx -d is a great cell discharger but i will never recommend to a racer to spend 185.00 bucks on a discharger we stick to are initial plan and if you feal you must use a single cell discharger there are cheaper ones with the ability to cut off at user desired cutoff of 1.0 per cell :wave: WE HAVE PACKS WITH OVER 15 RUNS ON THEM THAT ARE STILL ABOVE 400 SEC AT 35 AMPS THAT HAVE NEVER SEEN A DISCHARGE TRAY! :wave:

I discharge all cells individually using a device of my own design. Basically, the packs remain in "new condition" and never get hot or overcharge,greatly extending thier life. I bought 5 new packs and used this method from the get go, and after 8-10 cycles all 5 packs are strong and cycle well.

I would think afetr 15 cycles or so when some packs are starting to decline, packs equalized/discharged this way will stay good for many cycles. I never let them get hot, never let the voltage get too low, and most important equalize each cell. A little more work but worth it. All the integy 0-30 did was ruin good packs, I think it actually did more damage than If I used no tray at all. Keep these cells from overcharging and they will last a while.

Sorry I have to jump in on this but I think this battery theory is a lot of fun to think about.

Let's look at a pack that has been used a number of times. It is very possible that one or more cells in that packs has lost some run time compared to the others... at the very least all of the cells have lost some run time and this loss is not the same in each cell.

When you use the "common" equalizing tray that takes each cell in this pack down to the same voltage, that means the next time you charge your pack some of the cells will be over charged and some will be undercharged. As time goes on this gets worse and worse.

Now if you never equalize your packs (or discharge them down close to fully discharged) each cell has been discharged the same amount. This means that the next time you charge your pack, each cell will have the same amount of energy missing and each cell will peak at nearly the same time.

One varible here is that cells self-discharge at different rates and if you don't use your packs for awhile that could throw off the above theory. Also, we do have different IR's in each cell that will also affect the charge time but I do think not equalizing is better then doing it. Ideally we would have a charger that could charge each cell individually.

So many variables here..... I would defiently recommend equalizing.... It helps in the fight of 1 cell having more charge in it the next time you charge the pack... If 1 cell gets away from the others and charges faster,The chances of that cell peaking before the rest of the cells in the pack is almost certain. If you want to test my theory Hank, next time you charge your un equalized pack check each cell for temp at peak time....The cell that is overcharging will be 5 to 10 degrees hotter.This is where you lose the runtime in that particular pack...Each time this happens you lose time and voltage from the abused cell....Remember the packs you own are only as good as the worst cell.... Next time you buy some fresh stick.. Try a test and equalize one and never equalize the other.... Run them for 5 weeks and cycle them... I would love to see the results....Also Dumping them cells right after the race is the worst thing I see at the track.... Let them cool then dump them.... to 3.60 volts... Putting a few seconds back in them isn't a bad thing either... If im not racing for a few weeks I put 1000 seconds in them and dump them @ 35 a day or 2 before I charge them to race...