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-   -   Got a 3800mah NiMH pack (https://www.rc-monster.com/forum/showthread.php?t=24770)

HomeGrown 12.01.2009 05:48 PM

Got a 3800mah NiMH pack
 
well i did some trading and i recived a 6 cell Intellect 3800mah NiMh pack.. i got it in the mail today.. well i hooked it up to my charger and it dont beep (Prophet plus charger beeps when it "reads" a battery has been hooked up).. well after doin some voltmeter checking it has 1.6V TOTAL.. is there a way to "Zap" it?.. all the solder joints are fine.. there is 2 or 3 cells that have a voltage lower then 1V.. but i've had cells come back from 0 before but my charger also read that the pack was there when i did those.. i'm aggrevated.. i've been waiting for this pack to run my pede again.. oh and those screws PEDEBASHER!! LOL.. well can this pack be revived? or should i send it back?

brushlessboy16 12.01.2009 06:05 PM

Nimh lose charge when they sit. run the last bit out of it then peak it- you should be fine.

jhautz 12.01.2009 06:08 PM

Try setting the charger to a lower cell count if you can. Like maybe 1 or 2 cells. That might make it so it detects the pack. Then you can slowly bump the voltage and keep addin cella to the charger setting untill you get the voltage up to a reasonable range.

As far as reviving the pack... I found that a very slow charge and discharge will sometimes bring a seemingly dead pack back to life. Set the charger for the cycleing mode and then charge it at a super low rate like .1amps and then discharge at the same low rate. Do this a few times until you start to see the capacity of the battery come back.

Unfortunatly, thr pnch of thrnpack never rally seemed to recover for me. Once it went dead it might get most of thr capacity back but the punch is pretty weak after that.

HomeGrown 12.01.2009 06:16 PM

Thanks guys.. i've got it figured out.. i "jumped" it.. using a 6V battery and some extra wire to give it a few more volts.. i appreciate the info tho!!

btw my charger dont discharge batteries and it only does 1, 2, and 4 amp charges..

and brushless boy i plugged it into my pede and the esc didn't even turn on..lol thats how dead it was..

rawfuls 12.01.2009 06:54 PM

You can always use a light bulb to discharge..

Bondonutz 12.01.2009 07:24 PM

Hope you only traded a toe nail clipping for it ?

sikeston34m 12.01.2009 07:31 PM

Quote:

Originally Posted by Bondonutz (Post 336465)
Hope you only traded a toe nail clipping for it ?

:rofl::rofl::rofl:


You crack me up.

HomeGrown 12.02.2009 12:05 AM

Quote:

Originally Posted by Bondonutz (Post 336465)
Hope you only traded a toe nail clipping for it ?

No, actually I traded Killzone 2 for ps3 for that pack (6 cell Intellect 3800NiMh) and a VXL pede chassis.. I still have to send him the game..lol i keep forgetting.. i need to before he thinks imma rip him off..

Bondonutz 12.02.2009 09:27 AM

To send you a pack completely dead is not doing you any favors. I hope the pack can be saved ?

HomeGrown 12.02.2009 10:52 PM

it was saved it runs like a dream too!!

scarletboa 12.03.2009 01:28 AM

Quote:

Originally Posted by HomeGrown (Post 336739)
it was saved it runs like a dream too!!


just wait until you try lipo. you can get some nice 2s packs from hc for about $20.

_paralyzed_ 12.03.2009 01:39 AM

Quote:

Originally Posted by HomeGrown (Post 336739)
it was saved it runs like a dream too!!

if I got a nimh pack in that condition I would consider it junk. You may have gotten it to take a charge and work, but for how long will it work? It's lifespan has been seriously shortened by it being discharged that far for any length of time. The longer it sat like that, the more life or "cycles" it lost. Good luck.

HomeGrown 12.03.2009 06:44 PM

Quote:

Originally Posted by scarletboa (Post 336764)
just wait until you try lipo. you can get some nice 2s packs from hc for about $20.

i plan to run lipo soon hopefully.. I've seen the packs at hc.. and i will be running a Turnigy 2s 5000mah.. soon isnt soon enough tho! :lol:

HomeGrown 12.03.2009 06:48 PM

Quote:

Originally Posted by _paralyzed_ (Post 336767)
if I got a nimh pack in that condition I would consider it junk. You may have gotten it to take a charge and work, but for how long will it work? It's lifespan has been seriously shortened by it being discharged that far for any length of time. The longer it sat like that, the more life or "cycles" it lost. Good luck.


see thats you tho.. i dont have the money to just go out and buy new stuff.. thats why its takin me so long to get LiPo stuff.. and by the looks of it its going to take me even longer to go LiPo.. all my money goes towards bills and stuff for my son.. makin $11.50 an hour and having a $1000 dollar house note on top of other bills dont leave me much room to buy anything for my RC.. so i'll take what i have and be happy with it.. i will use this battery till im dis-satisfied with it.. by that time i might have enough money saved to go LiPo but untill then.. i'll take my "junk" battery pack and continue to beat the shit outta my pede with it..

/end-rant.. (no offense)

_paralyzed_ 12.04.2009 11:42 PM

for sure, if it's working for you and you're having fun that's all that matters. I didn't mean to say you have junk, I just wanted to illustrate the point that sitting without a charge is very hard on nimh's, I'm always leary of used batteries


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