toasty 3000's

[chizzler]

How hot are the 3000 nimh batteries supposed to get?

i charged mine with a novak millenium, and acording to the manual(4mv delta, 4 amps. linear charge)

these things get hot!!

but i did notice after their supposed peak they cool quickly unlike overcharged ni-cds.

is this normal for the 3000's?

here is the charge info:

9.27 V 2904 sec
3227 mah 104370 J

if someone can help that would be great!! :)

[outsider]

My 3000 pack gets pretty hot at the end of a charge at 3 amps charge rate (I have an intellipeak). Also pretty hot after a run for that matter. I think it's probably normal. I guess it's because it's simply being used longer than 2400's or 2000's or 1500's so they get hotter when being charged or at the end of racing.

[rc10t3racer]

Chizzler,

Your voltage looks a little low, what type of packs are you using. My Sanyo (Trinity Race Spec) NiMh batts peak about 9.5v.

[chizzler]

trinity team specs

[ 07-17-2001: Message edited by: chizzler ]

[chizzler]

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[jeepinator]

chizzler, mine get pretty warm too.
I have read that they SHOULD NOT get hot, but it does not matter what I charge them at, they get almost hot (really warm, I guess ?).
I am using a Tekin 112a at 4.5 amps.

[chizzler]

yeah jeep, i was reading that once they get hot on a timed charger they have already been ruined.

soooo, why would they get hot being charged the way they are supposed to? :confused:

but i think i know why the voltage is sorta low, i never really run these until they are somewhat almost dead,(and i have not discharged them either yet ;)) so thats what i think is the cause

[Rick Hohwart]

Everything looks fine. And generally the lower the peak voltage the better. Higher peak voltages are a sign of higher internal resistance. New packs will peak low and as they are sued the peak voltage will creep up. If you get over 10.0v (at around 5 amp charge) performance loss will be noticed.

[chizzler]

thanks rick ;)

[Gutter Ball]

Ouch, I just started to charge my 3000's at 6.5amps because the manual says it's beneficial :/ I guess not. I always keep a fan on the batteries and they still get hot. I charged them at 5amps for awhile, same thing, hot :) Methinks I'm gonna go back down to 5amps...

[ProRacer03]

Hello folks, I was wondering about this. I have Matched Sanyo 3000's from Promatch. The peak voltage I get from my pack is 8.6 +/- .3v. These are new packs. T

he Numbers on the packs are:

355 1.124
4.0 30 22
MWHR 3310
0.90 5000

All are pretty close. My question is: Is this alright that voltage is really low? Because, when i check an individual cell after a charge it is in the range of 1.37v +/- .2v when multiplied by 6 it gives me my peak voltage. Are they supposed to hold more? I always tray my cells after i use them down to .65v using the Smart Tray.

[Drayken D]

You should never use a fan on the batteries while charging. It could lead to overcharging the battery. Been told this by two battery matchers. Try charging at about 3-4amps, the heat should be less.

I could have sworn that it is not recommended to discharge on a tray like that after every run, but to do it every 5-10 runs. Doesn't it only discharge at a very low amp? Which is not good when discharging on a regular basis, atleast for NiCd it's not.