Mister-e, sorry but you are wrong on the delta peak setting. There are a number of things to consider here, but I am trying not to confuse Sam.

As you increase the Amps, you should lower the delta-peak, so you are right there, but at the moment, Sam is BELOW 1C and increasing slowly.
The difference between slow/trickle charging (1/10C) and fast charging (1C or higher) is that the lower the charge rate, the smaller the voltage drop (delta) when charged so you need the detection smaller. When it is fast charging the voltage will suddenly drop by a large amount, and that is the drop you want the charger to detect. Detection of the smaller drops will result in a 'false peak'.

Sam doesnt have the tools to discharge each cell, it ia a standard tamiya stick pack and as such, yes it is balance, but he cannot discharge each cell.

Sam, your next step is to make the amps 1C, set the delta a7 7m/v, run the battery in the car and see how long it runs, when it is cool, try charging it at 5A ...same delta.

Alternatively, dispose of them, and wait for your Lipo

Thanks guys............progress under progress.

Ok have managed to pump in the 2000am rate today (on the 3000 Ni-MH). That real good news. Considering i started with only 800 amp odd going into the batterries. So after 8 cycle or so the batter seem to be coming alive.

Only thing is now it seems to prematuely stop charging because of the temp. threshold. As stated on the LCD screen when it stops charging.

Currently the temp. threshold is set at 55degree celcius & the delta peak sensitivity at 9mV/cell.

So it can take more charge but shut down because of the temp.

Hhmmm.......?

drop the delta-peak to 7m/v and see what happens....I would suggest taking the temp higher but I suspect that would be dangerous....

It is also a good idea to see if you can detect if any one cell is getting hotter than others. Sometimes you may just have one bad cell (out of the 6) and that could mess with your charging routine.

All my four packs are prebuilt & heat shrink wrapped. There is no way of knowing which is the bad cell.

Sam, the normally start heating up from the plug lead side....in other words, the one closest to the plug gets warmest first....but if there is a dud, it normally gets considerably hotter than the others..

How many amps should be pumped into a 3600 & 3000 Ni-MH to be considerd a full charge?

sam

it depends how empty the battery is.....but pretty close to 3600 or 3000....a better way to judge it is through time, 3600 bat should take an hour to charge at 3.6A charge rate

Today i managed 50 minutes of charge for the 3000 map Ni-MH which pupped 2200 amps then shut down at 55 degree celcius.

if you charged at 3A then thats pretty good!

think you need to start tryin to run the packs in your car and see what run times you are getting?

i give you credit for persisting with those batteries!

Yup.........been charging the 3000 mAp at 3amp & 3600 at 3.6amp. Discharge both at 2 amps.

Just the temp shut down thingy at 55 degree. Tried to bring sown the cut of threashold from 10 to 7. But no better result. Will just keep cycling to see if it betters.

Every day i cycle all four packs twice. Log them on an excel sheet. All during office hours...............

Its like a ritual now....check emails check charger....check emails then check charger......my office guys think iam crazy!

But now its time to actuall test them in the car. Hopefully this coming saturday. Funny the Lipo should also be here by then.

But ianint giving up sp easy.!!!!! Going to make these blooming battery's work.!

Happy to report that after a intensive cycle charge/discharge for over a week. All the 4 back have life back into them. Ran about 12-15 minutes per pack. Couple more cycles......& they should be bak.!

Thaks again Paul , Andy & the rest for all the advise!

Nice to know that it works! Now i have to do the same with mine.
I have a 1400niCD 2400niCD 3300niMH and a 3600niMH that needs reviving

I did try cycling my 3300niMH with 2 cycles.. but didnt see any changes on performance.. one push on the acceleration and its dead.

Thanks Sam!

I have gone through 8-10 cycles. If u have a good changer with all the settings then its not that difficult.

Guys any recommendations while storing the Ni-mh packs for a week. Complete discharge (to the recommended min voltage offcoarse) or half full? As Ni-mh loose there charge per day.