Go Back   The 75 and ZT Owners Club Forums > The 75 and ZT Owners Club Forums > The 75 and ZT Owners Club General Forum
Register FAQ Image Gallery Members List Calendar Search Today's Posts Mark Forums Read
Notices

Reply
 
Thread Tools Display Modes
Old 15th April 2019, 09:40   #1
Randyjim
Regular poster
 
MG ZT 190

Join Date: Nov 2016
Location: Gloucester
Posts: 52
Thanks: 19
Thanked 19 Times in 16 Posts
Default Battery Stamina - How long without use?

My ZT190 was left stood for about 3 weeks recently and when I came back to it the battery was flat. Does this seem normal for residual drain from security systems, or does it indicate the battery is on its way out?

It started fine with a jump from mum's Golf, and had enough juice in it again for a restart after a fuel stop about 30 miles later. Its normally used as my daily and I've never had battery issues before so I don't think it's an immediate issue, but perhaps one to plan for.
Randyjim is offline   Reply With Quote
Old 15th April 2019, 10:38   #2
HarryM1BYT
This is my second home
 
HarryM1BYT's Avatar
 
75 Contemporary SE Mk II 2004 Man. Sal. CDTi 135ps, FBH on red diesel, WinCE6 DD

Join Date: May 2010
Location: Garforth, W. Yorks
Posts: 16,591
Thanks: 2,022
Thanked 1,810 Times in 1,415 Posts
Default

It could be either residual drain, or a battery on its way out - the only way to be sure is the check the battery drain.


I had a problem with discharge and explained how I tracked my problem down in the forum - https://the75andztclub.co.uk/forum/s...d.php?t=167111


Certainly, a good battery, fully charged, with a normal level of discharge, should be able to be left parked for at least 6 weeks.
__________________
Harry

How To's and items I offer for free, or just to cover the cost of my expenses...

http://www.the75andztclub.co.uk/foru...40#post1764540

Fix a poor handbrake; DIY ABS diagnostic unit; Loan of the spanner needed to change the CDT belts; free OBD diagnostics +MAF; Correct Bosch MAF cheap; DVB-T install in an ex-hi-line system; DD install with a HK amp; FBH servicing.

I've taken a vow of poverty. To annoy me, send money.

Last edited by HarryM1BYT; 15th April 2019 at 10:41..
HarryM1BYT is offline   Reply With Quote
The Following User Says Thank You to HarryM1BYT For This Useful Post:
Old 15th April 2019, 14:56   #3
maxi_crawf
Posted a thing or two
 
maxi_crawf's Avatar
 
R75 Saloon Conn CDT SE, MG ZT190+

Join Date: Nov 2006
Location: Kingston-upon-Hull
Posts: 1,777
Thanks: 610
Thanked 314 Times in 223 Posts
Default

Mine clicked but refused to start after 5 weeks of standing, a 190 also.

Sent from my SM-G925F using Tapatalk
maxi_crawf is offline   Reply With Quote
Old 15th April 2019, 17:35   #4
steve-45
This is my second home
 
steve-45's Avatar
 
Rover 75 Saloon CDTi

Join Date: Oct 2015
Location: Belvedere, Kent.
Posts: 3,127
Thanks: 75
Thanked 698 Times in 545 Posts
Default

My diesel struggled to turn the engine over after 4 weeks of non-use.
steve-45 is offline   Reply With Quote
Old 15th April 2019, 17:41   #5
marinabrian
Baculum Magicum
 
marinabrian's Avatar
 
A few too many

Join Date: Jan 2011
Location: The People's Republic of North Tyneside
Posts: 17,474
Thanks: 2,454
Thanked 8,059 Times in 4,423 Posts
Default

My 1800 didn't struggle after three months

Brian
__________________
Hes not the Messiah, hes a very naughty boy!
marinabrian is online now   Reply With Quote
Old 15th April 2019, 17:55   #6
P-Nut
Gets stuck in
 
MG ZT 190+

Join Date: Nov 2012
Location: North Shields
Posts: 520
Thanks: 132
Thanked 155 Times in 93 Posts
Default

I've left mine for 3 weeks no problem
__________________
Approved food eater
P-Nut is offline   Reply With Quote
Old 15th April 2019, 19:41   #7
marinabrian
Baculum Magicum
 
marinabrian's Avatar
 
A few too many

Join Date: Jan 2011
Location: The People's Republic of North Tyneside
Posts: 17,474
Thanks: 2,454
Thanked 8,059 Times in 4,423 Posts
Default

Assuming a good battery which is fully charged......

96Ah battery, that will still start the car at a 50% charge level, and the car electronics that correctly go to sleep leaving a quiescent current of 45mA.

This level of discharge will allow for about 1080 hours, or 45 days......six weeks give or take


Brian
__________________
Hes not the Messiah, hes a very naughty boy!
marinabrian is online now   Reply With Quote
The Following 2 Users Say Thank You to marinabrian For This Useful Post:
Old 15th April 2019, 20:24   #8
2750 HP
Avid contributor
 
ZT CDTi x 2, 190+, 260, Triumph TR4, Rolls Royce and Bentley

Join Date: Feb 2014
Location: Little England
Posts: 187
Thanks: 6
Thanked 24 Times in 20 Posts
Default

My class 47 batteries lasted nearly 5 months between starting up again a couple of weeks ago. Not bad as they were new way back in June 2008. She started first time on the button.


Regards
Steve

Last edited by 2750 HP; 15th April 2019 at 21:11..
2750 HP is offline   Reply With Quote
Old 15th April 2019, 21:00   #9
marinabrian
Baculum Magicum
 
marinabrian's Avatar
 
A few too many

Join Date: Jan 2011
Location: The People's Republic of North Tyneside
Posts: 17,474
Thanks: 2,454
Thanked 8,059 Times in 4,423 Posts
Default

Quote:
Originally Posted by 2750 HP View Post
My class 47 batteries lasted nearly 5 months between starting up. Not bad as they were new way back in June 2008. She started first time on the button.


Regards
Steve
I suspect there to be less parasitic, as in non at all, for your average Sulzer 12LDA28C though Steve
__________________
Hes not the Messiah, hes a very naughty boy!
marinabrian is online now   Reply With Quote
Old 15th April 2019, 22:53   #10
COLVERT
This is my second home
 
R75 Saloon.

Join Date: Feb 2009
Location: Newton Abbot / France
Posts: 9,600
Thanks: 2,102
Thanked 933 Times in 815 Posts
Default

Quote:
Originally Posted by 2750 HP View Post
My class 47 batteries lasted nearly 5 months between starting up again a couple of weeks ago. Not bad as they were new way back in June 2008. She started first time on the button.


Regards
Steve
A mystic post, which I guess to most, doesn't give a clue.

more info here would raise a cheer, so now it's up to you.

Now 47 batteries would need power, for charging over.

But how on earth did you fit them all, into your little Rover ?
__________________
COLVERT is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 21:30.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Copyright 2006-2019, The Rover 75 & MG ZT Owners Club Ltd