Cell failure

Lotus · **Posted:** Tue Oct 23, 2007 10:27 pm

Noticed Alans car appeared very slow last week, checked out the battery he was running (3900ma) and noticed it was only delivering 5.4volts when running under load.(all our other batteries deliver 7.5v under load) I suspect one of the cells has failed, has anyone ever replaced a faulty cell with a new one? in a pack, just wondering what are the implications when charging. Lotus.

x-ray f · **Posted:** Tue Oct 23, 2007 10:45 pm

I dont know kie
do you discharge them each week :shock: :?: :?:

Lotus · **Posted:** Tue Oct 23, 2007 10:50 pm

Yea, I have three car headlight bulbs and use these to run down the used batteries (similar load to a motor) when they get really low I swap them to a discharger which equalizes the cells, and then charge them at 3 amps. Been working fine till now. Lotus.

x-ray f · **Posted:** Tue Oct 23, 2007 10:53 pm

:?:
Dont know so lotus :?:

vectra · **Posted:** Wed Oct 24, 2007 12:06 am

Are they stick packs or ladder ?
in other words
do they look like this
===

or this
=
=
=

Discharging them too low will put them into reverse polarity and wreck them.
If they are lader type there is no real problem changing one cell ;)

MR-4 · **Posted:** Sat Oct 27, 2007 11:31 pm

vectra wrote:

Are they stick packs or ladder ?

haha! :lol: :lol: 8) 8)

vectra · **Posted:** Sun Oct 28, 2007 1:08 am

MR-4 wrote:

vectra wrote:

Are they stick packs or ladder ?

haha! :lol: :lol: 8) 8)

SHUT UP..!! :lol:

gavin · **Posted:** Sat Dec 01, 2007 4:07 am

Lotus buy a novak discharger :wink: If there is a prob with one cell it will let you know trought the red light on it, Put on your batts.. on to 0.9 if one light gose off right way then you no there is a prob.. best thing i ever bought all the lads have them.The system you have is no good its crap ,dont no what `s in the batts.or whats left to go to run them down :wink: All the cash your putting into the cars and the batts might leave you down get a novak dischacher bud.About E50-70 on ebay,Well worth it ,And you can dring some of your batts. back to life if not to much fecked :wink: Worked for me :wink: Best thing i ever bought and all the lads will tell you that have them. It`s just top class well worth the few bob,Saves you a small fortune on batts, trust me I know :wink: :twisted:

Lotus · **Posted:** Sat Dec 01, 2007 11:10 am

Thanks for the reply Gav, I may be wrong but I think the Novac will only work on ladder packs? I have a discharger but its very slow and it discharges the whole pack to 5.4volts, not ideal!

gavin · **Posted:** Sat Dec 01, 2007 11:54 am

Yep only saddle pack batts..Is`nt that what you use :?: Or you stick pack :?:

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Cell failure

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