EXPLODING BATTERIES
 

Below is what can happen when you over charge a pack of batteries. Sounds like a shot gun going off. Fire and burning parts every where, the end of cell can blow off... this can blind you, distort your vision, mane you, burn all your hair off your head, blow off your fingers and could even kill you!

DON'T EVER CHARGE A PACK WITHOUT BEING THERE. (WATCHING THE TEMP).
DON'T OVER CHARGE. NEVER OVER 10 MV DELTA PEAK (THRESHOLD) PER CELL.
NEVER CHARGE OVER 6 AMP.
NEVER CHARGE OVER 120 DEG TEMP.
NEVER USE A METAL BATTERY HOLD DOWN AS THEY HAVE BEEN KNOWN TO SHORT OUT BATTERY PACKS.
ALWAYS WATCH THE TEMPERATURE OF BATTERY AND CHARGER.
NEVER CHARGE ON A METAL SURFACE THAT CAN SHORT OUT CELLS.
THESE BATTERY ARE POWERFUL AND BY NOT BEING CAREFUL YOU CAN AND WILL HURT YOURSELF OR SOMEONE YOU LOVE.

MIKE

are they the ones you matched yourself?

how many on the above list did you do?

Ouch mike :)

Why would you use a 10mV threshold? You are asking for trouble. Maximum threshold acceptable to todays batteries is 5 mV per cell. Using 10mV will ensure that you get the results shown in the photo.

I am using 5mV per cell for GP cells,
and 3mV per cell for intellect

is it safe to go higher for intellects?

batteries
 

Hi all.
I found this on a site....I was looking as my son was using a buggy on the weekend..he put a pack on charge..(which I try and encourage)..using a CHEAPER charger...and walked away... not too sure how long he left them...
HE came running in and said "dad, I think theres something wrong with the batteries".
I went to the shed, noting a funny smell...burning ozone!....
The packs were bubbling away..liquid..(dangereouse, caostic, cancer, and all the bad stuff)...all over the table and the packs smoking,,,,i switched off the charger..( no, not my Competition chargers)..
He had put the leads on the wrong way..neg to positive, etc.
The charger didnt pick it up..and it cost me a pack, and for pat to learn...Scarey......
Guys...dont use a cheap charger, for the cost of your cells/ cars, etc...dont scrimp on the most IMPORTANT item in your pit box.....
The intelect cells do like the lower cut off.3 and the GP .5...this i found and so has ALL thematchers to be the best.....

Any one else got a story?
:) ..I think way TOO many racers are VERY VERY complacent when comming to charging there batteries..
mike

Yes
 

WOW!! What the hell?! What brand of packs were they?

so powerful the electrons could not escape fast enough... :tire:

looks like they were GP3300s

I think i saw that pic a while ago, i think it was some mong using step charging and false peak lockouts.

If you charge 6 amps and under on a good quality charger, and use the voltage threshold to determine how hot the pack is when it peaks. With Nimh always stay below 5mv, all you will achieve by having a higher cutoff is get your cells hot, and actually lose performance.

Rod - yes you can use a 5mV threshold for Intellect cells

ohh
 

oooh thats nasty, thats why youi spend the extras and buy a charger with polarity pick up and the rest of it, temperature cut-off too...



makes me think i shuld stop charging packs of my power supply :weird: :lol: :lol: :lol:

you guys should have been at the offroad nats this year we had explosions! the we had more and then a fire!

I had heard a poping sound similar to popcorn, i said to painy dude is that a battery? so he opens his tool box and we see this thing glowing bright orange, so painy kicked the lid down then.....BOOM! the lid shoot open blow a hammer, a phone, a wallet, other tools out of the tool box, the the pack was still exploding, and it landed on my shade tent, which then caught fire.... What do we do put the fire out and possibly get blown? we endedup kicking the cells away and puting out the fire. It was scary! :lol:

We still use the shade tent, with a couple of sunroofs!

So the moral of the story is dont leave charged packs in your tool box! :lol: :lol:

If you want to come and see our sun roof come talk to us

.

WoW!! amazing pic mike. Ive never seen a cell go off like that before.
ive had a pack go one me once. i had just finished peaking it and placed it in a bag after it had finished then 5 mins later heard some funny noises coming from it, i then opened it up and the cells were sizzling away.(mike was actually pitted right next to me).
im just wondering if it is a bad idea to place the pack in a bag after peaking it.
would this of been why it fryed on me??? i was a pretty old pack

It has happened to me before and almost happened to me last night again.....I was using a feature on the charger that my batteries didn't like. They were bubbling away and extremely hot. I left the room until the batteries cooled off :) I know how dangerous they can be.

LRP Competition chargers can only go down to a 5mv :(

LRP
 

Hi,

I don't think Mv really matters heaps of people use LRP Chargers and if this Mv thing is a real reason as to why cells exsplode then I doubt people like Simon Nicholson....Darrin Campbell ect would use them. :rolleyes:

Thats one of the funniest stories I have read.
Go Josh :lol: :lol:

funny, Monga and I charged an old 3300@ 12 amps with 2 Novak milleniums, P1,P2 stock '05 Vics!!
The pack still works :tire: :tire: :tire:

Mike thats a nasty result mate hope you dont have that happen again

BTW what charger were you using

one of my first packs was a set of second hand GP3300 peak matched packs I bought a second hand GMVIS Charger and charged it walked away dont know how long for but it must ofe been atleast 40 mins came back to a molten pack even the bars unsoldered because the shit charger didnt Delta Peak

hahahhaa :lol: f@ck this hobby sucks man! :lol: if it isn't the nitro fuel giving us freaking cancer, it's these bloody dynamite packs that are on a death wish trying to blow us all up! :lol: ... these batteries are freaking al qaeda and George Bush rolled into a neat little cylindrical package. BOOM BOOM, FREEDOM! burn that sun shade in the name of freedom! :D

and if that isn't bad enough you have Dan G and Luie "hyperform" L monging it all over the track and flying 5 feet high almost knocking some little kids head of!!!.....ok, :sneaky: :D so maybe that last one never happened, BUT I STILL RECON THEY'RE A MENACE! :D

shh
 

Shh tom ull start a new terrorist wave dont give them ideas LOL


Next thing you know ure gunna have asio at every race meet looking for any suspicious activites :lol: :lol: :lol: :lol: :lol:

they already are :sneaky: :sneaky: :sneaky:

DAMAGED CELLS
 

Those cells look like you could rebuild them and maybe get a few more runs outa them :lol: :lol:

i think on lrp chargers the mv cutoff is for the whole pack not per cell.

haha what about at the summer-nats, shade tent took the flight into the storage complex next door. crazy.

i suggest hang gliding would be safer... you should try it... ;)