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        General >> Give/Need advice to/from others >> Battery draining
        
(Message started by: trol on Oct 19^th, 2008, 11:19pm)

Title: Battery draining
Post by trol on Oct 19^th, 2008, 11:19pm

After not being used for two weeks, my battery is totally empty.
Is this a common thing with Scorpio's?

The car is a 12v, battery is new and the alternator puts out 14 volts.

Title: Re: Battery draining
Post by Scorpio_Mike on Oct 19^th, 2008, 11:41pm

Same thing happened to me last year - been away on holiday for 2 weeks, battery flat.
Remove battery, charge and refit - been fine ever since.

Title: Re: Battery draining
Post by peteHull on Oct 20^th, 2008, 6:51am

Check Relay R16 in the batteryside fusebox....
Hth
Pete

Title: Re: Battery draining
Post by trol on Oct 20^th, 2008, 4:32pm

Thanks:)
I'll check the relay, what does it exactly do?

Title: Re: Battery draining
Post by peteHull on Oct 20^th, 2008, 9:54pm

If there is something draining power i a short at the cig lighter or the glove compartment ligh being on or the bootlight etc, the car senses this and sends a signal to the relay which disconnects the power therfore avoiding the drain on the battery. If this relay is duff it will need to be changed....

hth
Pete

Title: Re: Battery draining
Post by trol on Nov 4^th, 2008, 5:07pm

The relay is fine, anything else I can check?

Title: Re: Battery draining
Post by gozz on Nov 4^th, 2008, 7:22pm

trol.
I reckon quick flat batteries only seem to occur when the cars are locked.
GOZZ

Title: Re: Battery draining
Post by Waglet on Nov 5^th, 2008, 10:11am

I agree. I left the Scorp (not the current one tho') unlocked for 6 weeks during the winter a couple of years back while in sunnier climates! Started 1st time and no battery issues at all, when you lock it I reckon all the security devises suck yer power! ;)

Title: Re: Battery draining
Post by amigafan2003 on Nov 5^th, 2008, 3:38pm

Amp draw on a locked car with PATS enable is a shade under 0.3A/H so that's 100 AH in two weeks - quite feasable to drain a battery in two weeks then.

Title: Re: Battery draining
Post by Snoopy on Nov 6^th, 2008, 12:24pm

BUT the power saver is supposed to switch everything off after 150 hours so to save the battery.. Has the power save function gone AWOL?
If so then the battery would go flat.

Title: Re: Battery draining
Post by TRACEYS_LIMO on Nov 7^th, 2008, 6:40pm

hi what make is the battery

Title: Re: Battery draining
Post by trol on Nov 10^th, 2008, 12:17am

It's a Dewa type 7 but I think it has died :-[
I's been empty two times, last week the locks wouldn't even open anymore.
I charged it, but the looking glass stays black....

As for the power saver, my remote fob stops working after some time ???

Title: Re: Battery draining
Post by gozz on Nov 10^th, 2008, 5:24pm

trol.
Best get a battery with screw tops so that you can check the electrolyte,then you always know where you are.
GOZZ.

Title: Re: Battery draining
Post by trol on Jan 24^th, 2009, 2:19pm

Well, my battery has survived, I charged it, left it out of the car for 6 weeks and it works fine ;D

Tha car still drains the battery, locked or unlocked.
Does the power saver also work when I leave the car unlocked?

How many aH should an unlocked car use?

Title: Re: Battery draining
Post by mijfife on Jan 24^th, 2009, 7:09pm

I had similar issues with the TD, if I pulled the power saver relay out and left the car, it didn't flatten the battery. A change of relay made no difference but the problem went away when I replaced the fusebox when I was trying to get the air con to work and it's been fine since.

Cheers Jim

Title: Re: Battery draining
Post by pinto on Jan 25^th, 2009, 1:29am

Another common cause of battery drain is failure of the diode pack in the rectifier of the alternator - when it breaks down, it allows current to flow to earth through the alternator, and it has an annoying habit of seeming fine when the car is running.

Put a multimeter in series between the battery and the lead to the alternator - if the pack is working, there will be a miniscule or no current reading.

Title: Re: Battery draining
Post by PeteB on Jan 25^th, 2009, 11:21am

Pinto just out of interest when you say lead to the alternator which one is that ?

Pete

Title: Re: Battery draining
Post by pinto on Jan 25^th, 2009, 4:52pm

One of the heavy red cables will go directly to the alternator - its the main charging lead :)