Intermittent Battery Problems on the 75 - Page 2

chipsceola · 27th April 2012, 20:31

Europarts say 027 battery at 60ah not 55 and am sure the 4yr g/tee Bosch battery fitted to mine is 60 amps.
Chips

David3807 · 27th April 2012, 21:21

Just for info my 75 handbook under battery rating states

1.8 litre petrol engine with manual
transmission 61 amp/hr

All other variants 75 amp/hr

snoop · 28th April 2012, 12:22

Hi i have rover 75 2001 2lt auto con I have had same problem I do not use key to open boot any more use button in side have not had flat battery for 2.5 years now

juzza0 · 29th April 2012, 19:47

Quote:

Originally Posted by David3807

You mentioned that the car was fully loaded. Does it have have the factory fit Sat Nav. If so have you checked that it is actually shutting down ie no red light showing on the sat nav compurer after about 2 mins of taking the key out and not opening or closing any doors/boot (which will activate the electrics) ??

And the spec of the new battery seems a little low at 55ah. I thought it was supposed to be 76ah

Yes, navi is fitted but system shuts down properly

Quote:

Originally Posted by SD1too

Juzza,

Is your useage mainly short journeys with frequent use of the starter motor? If so, that might be the reason.

Simon.

No, car is normally run to and from work so each trip is about 30mins.

Looks like the battery could be the wrong spec then

Thanks for all your help everyone

SD1too · 29th April 2012, 21:02

Quote:

Originally Posted by juzza0

Looks like the battery could be the wrong spec then.

I've looked up your 027 on my Lucas chart and it's not far off the recommended spec.

Simon.

batz · 29th April 2012, 21:05

This happened to me on my much missed 75 - turned out it was the boot light. I disconnected it it and had the new battery for 8 problem free years. Still in perfect health when last seen.

chrissyboy · 30th April 2012, 07:46

Quote:

Originally Posted by juzza0

Yes, navi is fitted but system shuts down properly

No, car is normally run to and from work so each trip is about 30mins.

Looks like the battery could be the wrong spec then

Thanks for all your help everyone

with a 30 min journey it is still possible it isnt enough to put back all the charge you used to start the car run the car with lights heater and radio wipers .

samurai · 30th April 2012, 15:24

It sounds to me like the battery is only being surface charged , it will require a charge of 5amps for approx 24hrs , let it stand for a while then have the battery checked properly , i dont think those discharge boxes are very good for loading the battery , the two prong type are not health and safety friendly but in my opinion work better . If you have the alternator tested , make sure they do an amp test , as i have seen the correct regulating voltage , but no ampage , also check the battery leads for cleanliness as they can cause a bad connection and effect the charging .

capese21 · 30th April 2012, 15:52

My battery would work ok one day and then be flat the next. The first time I blamed the boot light. I put the battery charger on it and all seemed ok. Then it did it again and the charger flased up an error code and would not charge it.

It was 4 years old but I think a plate inside had moved and shorted

Put a new one on and so far so good. Halfords list a 075 type for my V6 which is 61Ah 600A. I decided to fit the optional larger type which is a 096 77Ah 780A.

My car was dead so had to pay Halfords prices which was only about £20 more than online sites for a Bosch Silver.

Ed.

28th April 2012, 12:22	#13
snoop Newbie rover 75 saloon Join Date: Mar 2012 Location: culburra beach Posts: 8 Thanks: 0 Thanked 0 Times in 0 Posts	battery Hi i have rover 75 2001 2lt auto con I have had same problem I do not use key to open boot any more use button in side have not had flat battery for 2.5 years now

30th April 2012, 15:24	#18
samurai Regular poster Rover75 saloon Join Date: Dec 2010 Location: Leeds Posts: 93 Thanks: 0 Thanked 0 Times in 0 Posts	Battery problems It sounds to me like the battery is only being surface charged , it will require a charge of 5amps for approx 24hrs , let it stand for a while then have the battery checked properly , i dont think those discharge boxes are very good for loading the battery , the two prong type are not health and safety friendly but in my opinion work better . If you have the alternator tested , make sure they do an amp test , as i have seen the correct regulating voltage , but no ampage , also check the battery leads for cleanliness as they can cause a bad connection and effect the charging .

30th April 2012, 15:52	#19
capese21 This is my second home MG ZTT 180 Sports Auto. Join Date: Dec 2006 Location: London Posts: 3,930 Thanks: 18 Thanked 180 Times in 143 Posts	My battery would work ok one day and then be flat the next. The first time I blamed the boot light. I put the battery charger on it and all seemed ok. Then it did it again and the charger flased up an error code and would not charge it. It was 4 years old but I think a plate inside had moved and shorted Put a new one on and so far so good. Halfords list a 075 type for my V6 which is 61Ah 600A. I decided to fit the optional larger type which is a 096 77Ah 780A. My car was dead so had to pay Halfords prices which was only about £20 more than online sites for a Bosch Silver. Ed. Last edited by capese21; 30th April 2012 at 15:59..

27th April 2012, 20:31	#11
chipsceola This is my second home Jaguar XF 3.0D Join Date: Nov 2010 Location: Southampton Posts: 4,364 Thanks: 119 Thanked 509 Times in 426 Posts	Europarts say 027 battery at 60ah not 55 and am sure the 4yr g/tee Bosch battery fitted to mine is 60 amps. Chips

27th April 2012, 21:21	#12
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	Just for info my 75 handbook under battery rating states 1.8 litre petrol engine with manual transmission 61 amp/hr All other variants 75 amp/hr

29th April 2012, 21:05	#16
batz Avid contributor MG ZT190 and MG ZT 160+ Join Date: Oct 2008 Location: Kensworth, Beds Posts: 168 Thanks: 2 Thanked 5 Times in 5 Posts	This happened to me on my much missed 75 - turned out it was the boot light. I disconnected it it and had the new battery for 8 problem free years. Still in perfect health when last seen.