battery getting warm while on tickle?

[Olivier]

Hi,
is it OK for a 12V car battery to get warm on tickle charge ? Its about 30 to 31 degres centigrade on the side.
When I recharge the little AAA toys battery, they do get really hot, then I hope it is OK too for a car battery, or its not suppose to be?
Cheers.

 

[Martyn_n]

Maybe its getting warm because it's trickleish.

 

[Olivier]

It might LOL

 

[Olivier]

Its actually 34 degres celcius on the side walls now that the thermometer stabilised.

 

[BTB 500]

I don't think that's normal, are you sure it's only on trickle charge?

I've got a 75 Ah battery on maintenance charge right now and it's cold to the touch.

 

[BTB 500]

NiMH (AA, AAA) battery chemistry is different btw, and it's normal for those to get hot at the end of the charge cycle.

 

[Olivier]

Might not be normal as after charging it for a long period of time, it still shows only 12.4V
This mean from what I read that the battery is at about 70%

 

[Dieselman]

It means it has a dead cell, hence it getting warm.

 

[Olivier]

I guess this is why the 70% as well

 

[johnsco]

When fully-charged, it should read about 13.8 volts.

 

[Dieselman]

When fully-charged, it should read about 13.8 volts.

That's too much.

Fully charge the battery, leave to stand fro 24Hrs then measure with only light load on. It should read 12.5v if good.

Another test is to use the starter motor for 15 seconds and check the voltage under cranking. If it drops below 9v the battery is toast.

 

[CKLclive]

Its normal

 

[Olivier]

That's too much.

Fully charge the battery, leave to stand fro 24Hrs then measure with only light load on. It should read 12.5v if good.

Another test is to use the starter motor for 15 seconds and check the voltage under cranking. If it drops below 9v the battery is toast.

cannot do that as the engine will start before that...

 

[Olivier]

Its normal

OK, its getting hotter now, 35+, I put it on highter charge ( fast charge, 6Amp) to boost it a bit, disturb what ever is not working in there, we'll see what is happening in an hour

 

[Monkeylegend]

OK, its getting hotter now, 35+, I put it on highter charge ( fast charge, 6Amp) to boost it a bit, disturb what ever is not working in there, we'll see what is happening in an hour

BOOOOOOOMMMMMMMMMMMM !!!!!!!!

 

[Dieselman]

cannot do that as the engine will start before that...

Not if you disconnect the glow relay.

 

[Olivier]

I wouldn't go there as on veg it might gum the rings with the un-burned oil...

 

[Monkeylegend]

Is it chipped?

 

[Olivier]

chipped? No? Got few mod tho, like advance timing, reduce injector pop, by-passing the AIT, EGR delete, MAF from a CDI and put at an angle, FPHE, bypass the pre-filter. I think its about it , yet...

 

[Dieselman]

Why fit a MAF from a CDI and why angle it, both those things will make it read less.