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Old 04-12-2004, 03:34 PM   #121
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The hottest part is inner 4: - (+ - + -) +. outter 2 are about 10F degrees less.
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Old 04-12-2004, 03:43 PM   #122
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Maybe I just have to buy other charger to try out.
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Old 04-13-2004, 02:29 AM   #123
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Being the newb that I am, if you have a side-by-side pack, you can try to disassembling your pack and cycle your cells one by one and check for a weak one.

It seems to be that there maybe a bad cell somewhere, or a short inside your pack.

I had a defective cell in my sanyo3300 and the heat got so crazy, the wrapping around the cell melted.

Also, what's the internal resistance reading on your cells during a discharge?

If your IR is high something is wrong with your cells.
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Old 04-13-2004, 02:30 AM   #124
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I doubt your charger is the issue.

It sounds like unequalized/bad cells.

Try discharging your packs on a tray before you charge them up next. If you don't have a tray, try a trickle charge (0.3A say, with trickle set to "On").

If you're still not getting good charge results, try cycling each cell individually to see how they match up.

Oh, and make sure trickle is "Off" when fast-charging NiMH's.
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Old 04-13-2004, 02:33 AM   #125
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I hope my prev newbish advice don't screw you over Aku.

My sanyo2000 nicds seem to charge with less capacity every time... anyone know what's wrong?

(I can't afford an equalizing tray at the moment)

But I still dont' think not using an equalizing tray has this big of an effect?? EVERY TIME I charge my cells, I find it charges to less capacity?????????!!

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Old 04-13-2004, 05:00 AM   #126
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Equalizing tray does have a big effect, especially with NiCd's.

If NiCd's aren't fully discharged, they develop a "memory", and over time will end up with less capacity.

Odd that you are getting less capacity every time - discharging is important (use the CDC, if you don't want to get a tray yet) - as long as the cells still get warm under charge, they should be fully charged.
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Old 04-13-2004, 11:52 AM   #127
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I still run nicd's and I've never use an equalizing tray. My 2400's pull in 2600mah. I charge them once a week and then discharge and solder in dischargers to make sure their kept empty.

http://www2.towerhobbies.com/cgi-bin...?&I=LXJ282&P=7

With nicd's the voltage jumps up very quickly as soon as you stop discharging. I solder on the dischargers, discharge the pack at 20 amps, then 5 amps, 2 amps then .1 amps. This makes sure they are completely brought down. After a week the light will be either dead or very dim, which is what you want.

If you are charging them back to back then you will see a capacity drop, this is normal.
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Old 04-13-2004, 02:24 PM   #128
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Quote:
Originally posted by fatdoggy
I still run nicd's and I've never use an equalizing tray. My 2400's pull in 2600mah. I charge them once a week and then discharge and solder in dischargers to make sure their kept empty.

http://www2.towerhobbies.com/cgi-bin...?&I=LXJ282&P=7

With nicd's the voltage jumps up very quickly as soon as you stop discharging. I solder on the dischargers, discharge the pack at 20 amps, then 5 amps, 2 amps then .1 amps. This makes sure they are completely brought down. After a week the light will be either dead or very dim, which is what you want.

If you are charging them back to back then you will see a capacity drop, this is normal.
Seems like the main benefit is to drain the packs. But: An equalizer will do it more safely, since it eliminate the risk of cell reversal. And the EQ will keep the cells synchronized, well, at least at the buttom end. There migt be a single cell that never get fully charged
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Old 04-13-2004, 02:28 PM   #129
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Quote:
Originally posted by sosidge
I doubt your charger is the issue.

It sounds like unequalized/bad cells.

Try discharging your packs on a tray before you charge them up next. If you don't have a tray, try a trickle charge (0.3A say, with trickle set to "On").

If you're still not getting good charge results, try cycling each cell individually to see how they match up.

Oh, and make sure trickle is "Off" when fast-charging NiMH's.
I'll second this.

In addition, by cycling each cell individually, you get the cells equalized. It take longer time, but if you aint got a tray, this can be a free alternative.

By the way, I've tried trickle charge a few times, and the pack was quite slow/lazy the first couple of runs afterwars, so I would prefer the individual cell cycle instead.
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Old 04-13-2004, 02:33 PM   #130
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Well, I'm tired of this. I'm going to sell my CDC6.0 B2(just bought it ) and get a quantum or orion.

Anyway, thanks for the help guys.
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Old 04-13-2004, 02:54 PM   #131
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Cole Trickle - I don't disagree that equalizing it the better way of keeping your cells in good condition.

Last edited by fatdoggy; 04-13-2004 at 06:24 PM.
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Old 04-13-2004, 03:23 PM   #132
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Aku, before you decide to spend another $200 try charging other batteries on your CDC?? Or, you can take it in for warranty?? I don't know about you, but I dont' have a lot of $200 to spend.

I think everyone that's posted in this section will tell you the CDC is a good charger. So I REALLY think you should try all the alternatives before you do this. Cause I won't sell my CDC for anything out there at the same price level.

And with regards to this:

"If you are charging them back to back then you will see a capacity drop, this is normal."

Fatdoggy, How can i fix the capacity drop? By cycling my pack again?

Thx all.
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Old 04-13-2004, 06:23 PM   #133
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Generally for nicd's the first charge of the day will yeild the most capacity and punch. Every charge after that you'll drop capacity and punch. Hence why I only run my nicd's once a day. There really is nothing you can do about it.
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Old 04-13-2004, 07:56 PM   #134
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Does the capacity come back if I let it rest?
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Old 04-13-2004, 08:31 PM   #135
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Yes if you let them rest and keep it dumped the capacity comes back. Nimh cells really are easier to deal with.
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