R/C Tech Forums

R/C Tech Forums (https://www.rctech.net/forum/)
-   Electric Off-Road (https://www.rctech.net/forum/electric-off-road-4/)
-   -   battery scare (https://www.rctech.net/forum/electric-off-road/207975-battery-scare.html)

BSS07 02-26-2008 07:58 PM

battery scare
 
when ever i charge my batteries......(15amp powersupply, duratrax ice w/banana plugs. my batteries are all doing it 4600 ep, 3300 matched).

towards the end of the charge i hear a crackling noise and my batteries are making short bursts of sparks where the banana plugs are connected to the battery....yes they are on correctly postitive with the positive and negitive with the negitive. what is this??!?!:confused::confused::confused:

no other metal is touching the connectors

jjkahler 02-26-2008 08:04 PM

Are the battery packs in the vehicle when you charge them?

BSS07 02-26-2008 08:26 PM

nope, there on top of the ice

Stallard 02-26-2008 08:37 PM

Sounds like the cells are venting. Not a good thing:cry:

Are they hot?

Do some cells feel warmer than others?

BSS07 02-26-2008 09:03 PM

no they feal all the same temperature. but all 6 of my batteries are doing it

Nik 02-26-2008 09:38 PM

how many amps are you charging them at?

if the cells are not hot, you could try and hook up a multimeter onto the batteries and see if there are any big spikes...and check each cells voltage...but since all your batts are doing it, it doesn't sound like a bad cell.

could also be your charger.. mabey try another and see if it stops? I think its nothing more then a loose connection or bad solder somewhere.

I mean, where is it sparking, the ends of the cells, or the connector you used? sounds like theres a short somewhere.

BSS07 02-27-2008 04:20 AM

well i can try charging it with deans instead of banana plugs and see what happens.....

SQC049 02-27-2008 05:28 AM

I don't know about the sparks, but it sounds like the cells are venting.

Jason Pelletier 02-27-2008 07:11 AM

Don't pit by me.

Crazy Carl 02-27-2008 11:49 AM


Originally Posted by RB FIVE (Post 4210643)
Don't pit by me.

Me either
I think pitting at 360 would be safer:sneaky:

BSS07 02-27-2008 11:58 AM


Originally Posted by Crazy Carl (Post 4211324)
Me either
I think pitting at 360 would be safer:sneaky:

haha but evan also said something about venting when i asked him, like the battery's were realsing energy or something like that....

MikeXray 02-27-2008 11:59 AM


Originally Posted by BSS07 (Post 4211347)
haha but evan also said something about venting when i asked him, like the battery's were realsing energy or something like that....

Whats the peak detection setting on your charger set too? it's probably 2x as high as it should be.

Jason Pelletier 02-27-2008 12:27 PM


Originally Posted by BSS07 (Post 4211347)
haha but evan also said something about venting when i asked him, like the battery's were realsing energy or something like that....

I would never ask evan for advice.

Nay0k 02-27-2008 01:21 PM


Originally Posted by RB FIVE (Post 4211418)
I would never ask evan for advice.

ahahahahahaha

Dave H 02-27-2008 04:32 PM

It seems you are saying that the sparks are from the bannana connectors, not the batteries themselves, then I suspect the connectors are not making good contact. Not cell venting.

Are the connectors getting warm/hot? If so, it seems that they are warming up, and thus expanding slightly. Towards the end they expand enough that ya start losing contact, then the sparks start.

Low budget fix, crimp the connectors with pliers some to get a better contact. Better, new connectors.

Good Luck.


All times are GMT -7. It is currently 12:50 AM.

Powered By: vBulletin v3.9.3.8
Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.