Intellect Bang

[Tony Gray]

And..it happens in Australia too.... Went off in the battery box when packing up after the meeting. Ruining the box and most other things in there too.
Bring on Lipos.....

[strobe]

If any one has photo's of saturdays Explosion could they e-mail them to me at mark@markjmorris.co.uk .Intellect would like to see some photo evidence so they can sort something out for me.

[dave g]

if i rememeber correctly there was something on the net about ib admitting that some of the vent caps were faulty on the early models and they were changing the design/or how they were put together..been far too many failures of these cells to be user error,they should have never made it onto the brca list with the amount of these cells blowing up for no good reason..its only a matter of time before someone is stood in the wrong place at the wrong time.

dave

[jimmy]

I have a photo of it, I will send it tonight if I remember mate

[Southwell]

I heard some girl lost sight on one eye when a pack blew up, although i don't know if they were IB or GP.

[dave g]

yes that was a reciever pack in a ntiro truck,they had come off charge and blew up.

im not sure what make they were,but they were a 5 cell reciever pack so between 1300-1600 mah ones.

[dave g]

i hope this is ok jimmy? info on exploding ib cells.
http://www.rcracechat.com/vb/showthr...hlight=blowing

if not delete it mate

dave

[P_B]

Mark,

Pics just emailed.

[strobe]

PB
Received e-mail.
Many thanks Mark

[Northy]

Strobe, can you pm me the contact details of IB please

[dave g]

http://intellect-battery.com/home.htm

[mark christopher]

how many do number 1 then?

(A) Guidelines on handling Intellect Sub-C NiMH pack :

1. Charge the battery with quality charger, and max. current 3~4A.
   
2. Charging cut-off setting : Peak voltage = 5mV per cell, Temperature <55ºC,
   and best with timer.
   [Example on Peak voltage calculation : 6-cell pack = 5mV x 6 = 0.03V]
   
3. The battery can offer high current discharge, and be good for the level of
   10A+ (with Tamiya plug).
   
4. If you expect to leave the battery idle for >2 weeks, charge it for 1/3 capacity
   (say, 3A for 20 minutes)
   
5. Avoid to store the battery in hot & humid environment. Best temperature
   would be around 20~25ºC.

[Kopite]

i've followed all those rules, and still had loads of cells die on me. Not many other options at the moment is there though, unless anyone can recommend me an alternative?

[Southwell]

You charge at 4 amps all the time? What cells and charger do you use?

[millzy]

i do 4.3maps on ib smc 4200 at 0.3vpc on my charger .. thet have bene ok, but i have to equalise them befor uses as they have whats left in the pack after a run stroed in them...normaly 1500mh max

[Kopite]

yeah, charge at 4 amps, cos i already heard of them being dodgy. I use the robitronik overloader charger. I've never come close to overcharging them either, it's really weird cos i've heard people have a couple of cells die here and there, but not this many!!

[Southwell]

overloader charger , not the best name haha....anyway, i have had two cells go in two years, this was in just one pack. Apart from that they have been fine. This is with charging, using, leaving in car for a month, charging, using, sometimes discharging and equalising, but normally just charge them again They are in their second year and are still awesome, maybe treating them like crap helps?

[mark christopher]

i know i bang on about lipo, but the dont explode like a metal case cell such as above, i know what id rather be sat next to, tho i do have 4200

[Southwell]

The last thing we need is more power from our cells though imo.

[Kopite]

Originally Posted by Southwell

overloader charger , not the best name haha....anyway, i have had two cells go in two years, this was in just one pack. Apart from that they have been fine. This is with charging, using, leaving in car for a month, charging, using, sometimes discharging and equalising, but normally just charge them again They are in their second year and are still awesome, maybe treating them like crap helps?

aren't this year's IB4200's different to last year's? If i'm wrong, then please correct me, but i was led to believe that this year's cells are far more 'highly strung' so to speak, which would explain the temporamentality of them i suppose