Just my opinion ,but after some testing , I feel that the voltage cutoff piont is fairly critical with todays nimh cells.
I was using a 0-30 and most of us know how they work , It seemed fine but my packs were gradually getting worse at a fairly high rate. I'd cycle up a new pack and after a few runs check it and it was down on runtime and voltage. The packs were in the 0-30 for less than a minute after lights out.

A friend talked me into trying a Tekin battery doctor and I can't believe the difference , the packs gradually improved with each cycle and now they've stabilized and are staying pretty consistent . The IR went down in a hurry , from 7.8 to 7.5 to a final of low 7's.

This is not an info merchal and I'm not trying to sell you anything but really surprised at these results , would have never believed it if I hadn't tryed it.

It will defintely be down runtime and voltage. You let them sit in the tray to long. If you take the pack out RIGHT when the lights go out, you wouldn't have a problem. Now, if one or two cells still has voltage and the other lights are out, take the pack out, and use one pole on the 0-30 to dump the cells one by one.

Just sounds to me like they were dropped to far in voltage if you say they were in the for a minute after the lights went out, you can't forget they're being dumped at 30 amps regardless if the lights are out or not.....

My .02

Just my opinion ,but after some testing , I feel that the voltage cutoff piont is fairly critical with todays nimh cells.
I was using a 0-30 and most of us know how they work , It seemed fine but my packs were gradually getting worse at a fairly high rate. I'd cycle up a new pack and after a few runs check it and it was down on runtime and voltage. The packs were in the 0-30 for less than a minute after lights out.

A friend talked me into trying a Tekin battery doctor and I can't believe the difference , the packs gradually improved with each cycle and now they've stabilized and are staying pretty consistent . The IR went down in a hurry , from 7.8 to 7.5 to a final of low 7's.

This is not an info merchal and I'm not trying to sell you anything but really surprised at these results , would have never believed it if I hadn't tryed it.

I find the Tekin tray to be one of the best affordable tools for IB cells out on
the market today.

Used correctly it will make a difference.

I find the Tekin tray to be one of the best affordable tools for IB cells out on
the market today.

Used correctly it will make a difference.

Deffinitely the best bang for your buck !! :thumbsup:

The other thing I've found is too low a cut-off for discharging @30-35 amps !

There's no need to bring the current nimh cells to .90 !

Set your GFX to 1 volt per cell and you'll have better battery life and voltage , then slowly equalize to .5 , .6 , . ? what ever , but never lower.

Some matcher has to start this for their label 's and I'm sure most everyone will follow.

.90 was only started to show a higher run time number back in the day's of a much lower mah battery :thumbsup:

.90 was only started to show a higher run time number back in the day's of a much lower mah battery :thumbsup:[/QUOTE]



SORRY BUT .09 WAS NOT JUST STARTED TO PUMP UP NUMBERS .08 WAS THE STANDARD FOR LAVCO EQUIPMENT CE STUFF WAS NOT ACCURATE TO .80 EARLY ON THEY WENT WITH .90

Besides the infomerchal ,,,, the voltage cut-off on any high rate discharger should be set at 1 volt per cell.

Forget the few seconds you'll loose on your discharge data sheet.

IT NEEDS TO BE THE INDUSTRY STANDARD AS MUCH AS 35 AMPS HAS BECOME :thumbsup:

Equalization is a totally different story .

what is the difference if the standard is 1 or .09 or.08.. seems everyone is using the same setting.. its already industry standard.. the few cycles they use when matching a cell is not going to hurt them.. what you do after you build and buy them is your own preference.. in the end the numbers are stil going to be the same.. i dont get the point your trying to make.

That's why I don't like the batt doc. It takes them to .5v per cell. The Nov smart se is the the one to have. Adjustable to 1.2v per cell and hold. BC

That's why I don't like the batt doc. It takes them to .5v per cell. The Nov smart se is the the one to have. Adjustable to 1.2v per cell and hold. BC

Yes I agree with the Novak SE -- however-- be careful about using the "hold" function. The 4200's seem to be hurt by 2 things: 1) depressing the voltage too low (i.e. zero or close to it), and 2) the amount of time the voltage is depressed, regardless of how low. If you use the hold function, and leave the pack sit on the tray in the "hold" mode for, say 1/2 hr, the pack WILL lose runtime !

what is the difference if the standard is 1 or .09 or.08.. seems everyone is using the same setting.. its already industry standard.. the few cycles they use when matching a cell is not going to hurt them.. what you do after you build and buy them is your own preference.. in the end the numbers are stil going to be the same.. i dont get the point your trying to make.

The point is this , to yank that cell down to .80 as an example @ 35 amps doesn't help it one bit , if anything it hurts it from the very first cycle.
Technically speaking , a current nimh cell should never see a " HIGH -RATE " discharge below 1 volt per cell !!
The equalization thing is different , I still like the tekin , because its only a 2 amp unit and lights out at .70 , your golden . Even Tekin will say its not neccesary to equalize on every charge, every few is just fine .

Thats why many a racer will tell you storys about their 0-30 causing a high deterioration rate of their cells,,,, Too high a rate and Too low on the lights out. :(

With todays high capacitys , why not move it up where it should be :thumbsup:

We Cycle All Are Team Packs At A 1.0 Cut Off 4.0 For 4 Cell But If We As A Matcher Took Are Cells To 1.0 And Matched At That Everyone Would Think We Do That To Show Higher Voltage Readings Right?

We Cycle All Are Team Packs At A 1.0 Cut Off 4.0 For 4 Cell But If We As A Matcher Took Are Cells To 1.0 And Matched At That Everyone Would Think We Do That To Show Higher Voltage Readings Right?

They might ? As your voltage would go up very slightly , I believe that once they knew that was the most healthy for the cell or pack then they'd believe and you'd see many a matcher change.
The battery matcher that was using a .80 or .85 cut off wasn't ever slammed too much for higher run time numbers were they ?

Runtime more realistic at 1 volt and still showing an honest av. voltage , I can't really see where that would be a bad thing.

I seen much more foolish things like a small notation " voltage calculated at an average of 350 sec's " like any one with half a brain about batteries is going to buy that one.

Didn't Novak market their batteries a while back at 1v cut-off ?? I think they were trying to show the "usable" numbers or something.

Didn't Novak market their batteries a while back at 1v cut-off ?? I think they were trying to show the "usable" numbers or something.

I believe your correct , sometimes things like this are more a resistance to change than if the change is good or bad.

Racers are set in their ways and sometimes fall victum to " thats how we've always done it "