MrJim

Hi guys any advice please my battery is ok but it runs down if left for more than 3-4 days and I have to jump start it I've had the battery checked the car is 02 sti prodrive cheers guys

bugeyedom

iTrader: (2)

could be numerous things, the car i owned previously had a dodgy light inside the boot and was staying on 24/7 which used to drain my battery.

alternator not functioning properly? bad connection to battery?

johned

Is it a smart alternator.

alcazar

iTrader: (2)

Probably on that car.
Smart alternator requires a load across it before it will charge, try driving with the internal fans on, or use the hrw a bit more, drive on dips etc.

If it just goes flat over a couple of days, it may not be holding charge.

Mine went a bit like that, I HATE flat battery, so swapped it for a YUOSA, online at about £65, Halfords want £100.

I also now have a C-Tek battery conditioner.

matt-c

iTrader: (5)

As above C-Tek is your friend in this case.

Cpt Jack Sparrow

iTrader: (14)

Great piece of kit

johned

+1 for yuasa.

MrJim

Cheers guys I've checked the light in the boot that's ok so I will try running fans and side lights when I'm driving

ZANY

Hi boss I've just checked and you need a gArage before you can use a ctek unfortunately my man cave is still in the pipeline do you have any solutions apart from me taking my battery leads off as I don't drive it like a month or two at a time thanks in advance

alcazar

iTrader: (2)

Can you not run a power lead outside to the car?

Removing battery leads only works if the battery is OK, if it's dropped a cell, or not holding charge, it will go flat on it's own. Sorry.

ZANY

Yeh battery is all good done it on the last one for 5 years no problems always leave Windows abut open with a tumbler glass of salt so I don't get no moss and damp growing lol!! But if there was a way if keeping the battery preserved without mains or solar energy it would be great guess I'll wait for the construction of my man cave thanks alcazar for reply

johned

Never heard of the tumblar of salted water before please enlighten me.

little'un

iTrader: (9)

Get the battery load/drop tested

Use a multimeter to check the voltage across the battery terminals with the engine running and lights on to see if it's charging.

It's most likely to be a dying battery that needs replacing.

alcazar

iTrader: (2)

Not salt water, salt. Would work better on a flat, deepish tray...more area exposed to the air

Salt is hygroscopic, it picks up moisture from the atmosphere, so drying it.

I'd never do this...knowing my luck, the salt would spill and rust my car in a matter of days......

Oh...and you can "regenerate" the salt for re-use by placing in a low oven, 120 deg for half an hour.

Linus27

I have those little moisture bags dotted about in my car. Hardly ever get any condensation inside the car now. It was something I was told to do when I had my Lotus Elise which was terrible for having condensation on the inside.

ZANY

Top man I've got a flatter tray advice taken thx

johned

Then salt is similar but not as good as silica gel maybe.

Paben

iTrader: (5)

My problem was caused by a Tracker unit draining the battery. It would be flat within 4-5 days if the car was not driven. I was assured by Tracker that this was not the case but since discontinuing their service and disconnecting the unit I've had no battery problems.

alcazar

iTrader: (2)

Yes, has similar properties, but cheaper and easier to get.