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Woof
5th May 2013, 08:08 PM
Hi all, I have a Redback Thumper as a second battery which went flat this week so I had it on the charger for about 4 hours today, just went and checked it and it is hissing.......any ideas????
The battery is about 3 years old.
Maxhead
5th May 2013, 08:10 PM
RUN!!! Is ganna BLOW!!!! LOL


not sure but might just be releasing gas....is it a wet cell??
Ben-e-boy
5th May 2013, 08:12 PM
there could be a hairline crack in the casing or something? if so it is bin time
Woof
5th May 2013, 08:13 PM
It is one of those sealed thingys Kris
04OFF
5th May 2013, 08:21 PM
What amp charge rate are you feeding it ?

Is it getting hot on the case ?






/
Alitis007
5th May 2013, 08:28 PM
I had an optima yellow top that did that when i tried to charge it but it didn't accept charge. It was nackered and i'm guessing yours is too mate!!
Woof
5th May 2013, 08:37 PM
What amp charge rate are you feeding it ?

Is it getting hot on the case ?






/
Not sure about the amp charge as it is only a cheap charger that I got about 6 years ago, just checked it again and it is not hot but still hissing slightly
Maxhead
5th May 2013, 08:44 PM
It is one of those sealed thingys Kris

Does it do it as sooon as you hook it up to a charger or only after its been on charge for a while??
Woof
5th May 2013, 08:47 PM
Does it do it as sooon as you hook it up to a charger or only after its been on charge for a while??

Only noticed it when I checked it after 4 hours, the charger said that it was fully charged
Maxhead
5th May 2013, 08:50 PM
Only noticed it when I checked it after 4 hours, the charger said that it was fully charged

I'd say its just releasing gas possibly due to getting too much charge and bubbling the water.

If it was hissing straight away then the battery could be shot????
Stropp
5th May 2013, 08:52 PM
Doggie, take the sticker off if it has one and you can take the caps off, they will probably be screw types and it will be hissing because the gas from "boiling" trying to escape, the cheaper sealed ones are not really sealed they just cover the caps with a sticker, you have to take them off to relieve the escaping gas.
threedogs
5th May 2013, 09:32 PM
They are not really sealed the tops are called explosion caps/covers, Take it to a Battery place to have it checked.
Makes one hell of a mess under the bonnet if it lets go