Drain on battery overnight

John Bryan · 28th January 2008, 09:25

Have had Battery problem since new! If I do not run for 5 miles during day then battery flattens overnight. Have already disconnected SatNav and CD player because there seemed to be a drain.
Happened again this morning. Battery fairly new and charges fine out of car.
Any ideas?

JohnDotCom · 28th January 2008, 09:31

Could just be your Battery is about to die!
Have it checked first at Somewhere even loike Halfords, they have the Proper Gear.
5 Miles a Day is not really enough of a Run to put back in any charge you have used starting etc a Poor condition Battery.
Also check of course that No Courtesy lights are staying on In Load areas Glove compartments etc.

Keith · 28th January 2008, 10:03

Going flat overnight is much to quick even, if it was the sat nav unit at fault that should take three or four days

Take it to a decent auto electrician and get the drain measured

Do a search here for posts by DeeCee he measured the currents drawn over time and you can use those for rough reference

David3807 · 28th January 2008, 15:06

If you have a fuel burning heater fitted might perhaps that is going wrong.

You could try disconnecting it for a few days to see if that makes any difference.

But agree with JohnDotCom 5 miles not really enough to keep a diesel battery happy

taximan · 28th January 2008, 16:46

hi ive got a 51 plate diesel and am on my third battery. i do a lot of stopping and restarting the engine and this seems to boil the battery. halfords do a heavy duty one for about £70. ive never found a reason why it cooks them but its just one of those things.

sylvester · 29th January 2008, 21:43

Quote:

Originally Posted by taximan

hi ive got a 51 plate diesel and am on my third battery. i do a lot of stopping and restarting the engine and this seems to boil the battery. halfords do a heavy duty one for about £70. ive never found a reason why it cooks them but its just one of those things.

If the battery is boiling then it is being overcharged ie too much current - the voltage regulator needs replacing - had this problem with my bike once!

sylvester · 29th January 2008, 21:47

Quote:

Originally Posted by [email protected]

Have had Battery problem since new! If I do not run for 5 miles during day then battery flattens overnight. Have already disconnected SatNav and CD player because there seemed to be a drain.
Happened again this morning. Battery fairly new and charges fine out of car.
Any ideas?

Go and see Mark Hallam in what was Roy Relphs MOT station in Northfleet - good chap won't stitch you up - tell him Champagne Eddie sent you!

David3807 · 29th January 2008, 23:11

Quote:

Originally Posted by sylvester

Go and see Mark Hallam in what was Roy Relphs MOT station in Northfleet - good chap won't stitch you up - tell him Champagne Eddie sent you!

Yup agree with that. Very fair.

You could also try a couple of X Part Service Centres

Apple Developements in Meopham. Know 75's well and charges are reasonable. Use them myself.

appledevelopment.co.uk/index.htm

Or Executive Motoring Services at Rainham

http://www.mgr-service.com/

Jules · 30th January 2008, 08:39

The alternator itself can cause these symptoms if the Diode rectifier pack has gone leaky. Start disconnecting things & pulling fuses until the drain disappears while monitoring with an Ammeter in series with battery.

nick nick · 30th January 2008, 16:35

Quote:

Originally Posted by JohnDotCom

Could just be your Battery is about to die!
Have it checked first at Somewhere even loike Halfords, they have the Proper Gear.
5 Miles a Day is not really enough of a Run to put back in any charge you have used starting etc a Poor condition Battery.
Also check of course that No Courtesy lights are staying on In Load areas Glove compartments etc.

Although Halfords have their good points experience tells me electrics
aint one of them .The battery on my honda was draining over 2 days
so i asked their advice out came all thi hi-tec equipment and up went
the bonnet its your alternator he said we can do you one for £170+ fitting
and could do it on the monday (this was on the thurs)but as we were going
down to buks on the sat this was no good .After a phone call i took my car
to the local auto elec you have short on the ignition 2 hrs later 1 new battery
and £150 lighter i was back on the road and a little wiser to Halfords
advice
cheers
Nick Nick

28th January 2008, 09:25	#1
John Bryan Newbie Rover 75 Tourer Diesel Join Date: Jul 2007 Location: Northfleet Posts: 1 Thanks: 0 Thanked 0 Times in 0 Posts	Drain on battery overnight Have had Battery problem since new! If I do not run for 5 miles during day then battery flattens overnight. Have already disconnected SatNav and CD player because there seemed to be a drain. Happened again this morning. Battery fairly new and charges fine out of car. Any ideas?

28th January 2008, 16:46	#5
taximan Newbie 75 cdt Join Date: Jan 2008 Posts: 11 Thanks: 0 Thanked 0 Times in 0 Posts	flat battery hi ive got a 51 plate diesel and am on my third battery. i do a lot of stopping and restarting the engine and this seems to boil the battery. halfords do a heavy duty one for about £70. ive never found a reason why it cooks them but its just one of those things.

30th January 2008, 08:39	#9
Jules This is my second home ZT 260 SE Twilight and 10 other 75 ZT's :O Join Date: Jan 2007 Location: Conwy NORTH WALES Posts: 11,094 Thanks: 512 Thanked 1,116 Times in 763 Posts	The alternator itself can cause these symptoms if the Diode rectifier pack has gone leaky. Start disconnecting things & pulling fuses until the drain disappears while monitoring with an Ammeter in series with battery. __________________ [SIGPIC][/SIGPIC] Newbies do now!! 1. Plenum drains..all 3 or 4 year dependent 2. Cooling fan..All speeds functioning 3. Bonnet cable divider block

28th January 2008, 09:31	#2
JohnDotCom * Rover 75 FaceLift Tourer CDTi 170BHP Auto ConnSE 2005 Model Starlight Silver Join Date: Nov 2006 Location: Abergele Posts: 28,735 Thanks: 0 Thanked 6 Times in 5 Posts	Could just be your Battery is about to die! Have it checked first at Somewhere even loike Halfords, they have the Proper Gear. 5 Miles a Day is not really enough of a Run to put back in any charge you have used starting etc a Poor condition Battery. Also check of course that No Courtesy lights are staying on In Load areas Glove compartments etc.

28th January 2008, 10:03	#3
Keith This is my second home ZT400 Join Date: Oct 2006 Location: Ellesmere Posts: 5,948 Thanks: 0 Thanked 43 Times in 29 Posts	Going flat overnight is much to quick even, if it was the sat nav unit at fault that should take three or four days Take it to a decent auto electrician and get the drain measured Do a search here for posts by DeeCee he measured the currents drawn over time and you can use those for rough reference

28th January 2008, 15:06	#4
David3807 Posted a thing or two 2002 R75 Conn SE 2.5l Auto Tourer, 2001 R75 Conn SE 2.5 Auto Saloon Join Date: Nov 2006 Location: Gravesend Posts: 1,897 Thanks: 0 Thanked 2 Times in 2 Posts	If you have a fuel burning heater fitted might perhaps that is going wrong. You could try disconnecting it for a few days to see if that makes any difference. But agree with JohnDotCom 5 miles not really enough to keep a diesel battery happy