|
||
|
3rd June 2020, 16:43 | #21 |
I really should get out more.......
Rover 75 1.8 Club Join Date: Dec 2013
Location: Tilburg (Netherland)
Posts: 2,615
Thanks: 572
Thanked 336 Times in 247 Posts
|
Thanks, I don't have a highline system or satnav. Also no CD player either. Only a Navall Android unit, which I've already checked
__________________
Proud owner of the Dutch "Golden 75". A much loved Gold White Metallic Rover 75 1.8 na from 2000. |
3rd June 2020, 18:39 | #22 |
Doesn't do things by halves
Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007
Location: Former Middlesex
Posts: 20,382
Thanks: 1,587
Thanked 3,749 Times in 3,181 Posts
|
Hello Vinnie,
Sorry, my suggestion hasn't worked. I see from your photograph that you cannot hot-switch from the 10 amp range to the 200mA range because you need to move the red probe to a different socket. You could try locking the car to create realistic circumstances. Simon
__________________
"Whatever is rightly done, however humble, is noble." Sir Henry Royce. |
4th June 2020, 04:36 | #23 |
I really should get out more.......
Rover 75 1.8 Club Join Date: Dec 2013
Location: Tilburg (Netherland)
Posts: 2,615
Thanks: 572
Thanked 336 Times in 247 Posts
|
Actually, I think I can hot-switch. Before the photo, the multimeter was set to 10a. I only turned the dial to 200ma. I didn't switch over the probes. It still gave me the same value. So it seems to work.
__________________
Proud owner of the Dutch "Golden 75". A much loved Gold White Metallic Rover 75 1.8 na from 2000. |
4th June 2020, 15:25 | #24 |
I really should get out more.......
Rover 75 1.8 Club Join Date: Dec 2013
Location: Tilburg (Netherland)
Posts: 2,615
Thanks: 572
Thanked 336 Times in 247 Posts
|
My nieghbour pointed out to me that some batteries can drain by themselves. Although I heard this before, I didn't take it into account in my tests.
So, I charged the battery yesterday, and have left it alone for at least 24 hours. When I disconnected the charger yesterday, it said 12.45 volt. I just went out to check, and the battery now gives 12.29 volt. In the last 24 hours it has dropped 0.16 volts. In the past (before it got worse) I had a flat battery after roughly 1 week of not driving. This would mean that the battery could've lost roughly (0.16 * 7) 1.12 volts. That would give me roughly 11.33 volts to start with. Would that be an issue? Would that give me problems starting? (honestly don't know). Add to the whole story a drainage of a minimum of 0.07 amps, and I might be in trouble? The thing I haven't been able to figure out, is what can be expected as a regular drain? I've read articles that say 0.04 is normal, and other say it can go as high as 0.1 amps with certain models. I'm gonna leave the battery disconnected for another 24 hours. Then I'm gonna do some more testing with the fuses.
__________________
Proud owner of the Dutch "Golden 75". A much loved Gold White Metallic Rover 75 1.8 na from 2000. |
4th June 2020, 16:04 | #25 | |||
Doesn't do things by halves
Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007
Location: Former Middlesex
Posts: 20,382
Thanks: 1,587
Thanked 3,749 Times in 3,181 Posts
|
Quote:
Quote:
Vinnie, do you normally do a lot of short journeys or is the car left unused for long periods? Quote:
Simon
__________________
"Whatever is rightly done, however humble, is noble." Sir Henry Royce. Last edited by SD1too; 4th June 2020 at 16:06.. |
|||
4th June 2020, 17:29 | #26 |
This is my second home
R75 Saloon. Join Date: Feb 2009
Location: France/or Devon.
Posts: 14,003
Thanks: 3,851
Thanked 2,167 Times in 1,816 Posts
|
1/ How old is your battery ?
2/ How long do you charge it for when you say--I've charged the battery---? 3/ Your car will not start on a battery voltage of 11.33 volts. 4/ All batteries slowly discharge by themselves. From full to just about flat can take six months or more though. 5/ As a battery in use discharges, the current flows from Negative to Positive terminals.--- |
4th June 2020, 18:17 | #27 | ||
I really should get out more.......
Rover 75 1.8 Club Join Date: Dec 2013
Location: Tilburg (Netherland)
Posts: 2,615
Thanks: 572
Thanked 336 Times in 247 Posts
|
Quote:
Quote:
I do remember the car starting and driving pretty much fine before. After parking the car (after regular use) the battery drained within 1.5 week, and started to go empty more quickly. The last time, it took 2 or 3 days to go empty enough to not start the car anymore (and this was after a full charge).
__________________
Proud owner of the Dutch "Golden 75". A much loved Gold White Metallic Rover 75 1.8 na from 2000. |
||
4th June 2020, 19:20 | #28 | |
Gets stuck in
MG ZT 260, Rover 75 Connie SE auto Join Date: Feb 2013
Location: Redruth
Posts: 984
Thanks: 1,324
Thanked 399 Times in 271 Posts
|
Quote:
|
|
4th June 2020, 19:46 | #29 |
I really should get out more.......
Rover 75 Saloon Join Date: Jul 2011
Location: Gävle
Posts: 2,537
Thanks: 395
Thanked 823 Times in 652 Posts
|
Your post prompted me to have a look at two of my spare batteries in the garage. I probably last charged them about 2 or 3 months ago on a standard (non-clever) charger. At the time my son-in-law had problems starting but it always started with a freshly charged battery and then eventually wouldn't start at all. But it was the starter solenoid at fault so I kept the batteries charged until I replaced the solenoid which was probably in April. They haven't been charged since.
The Bosch battery read 12.7v / the Tudor just over 13v. Regards |
4th June 2020, 20:17 | #30 |
This is my second home
R75 Saloon. Join Date: Feb 2009
Location: France/or Devon.
Posts: 14,003
Thanks: 3,851
Thanked 2,167 Times in 1,816 Posts
|
Vinnie.
Item 2/ in my post. The fact that your charger goes into TRICKLE mode does not, unfortunately, mean your battery is fully charged. All that charger is telling you is that the part of your battery that is healthy enough to take a charge has been charged. If your battery is almost at the end of its useful life and the plates are beginning to fail that charger just says---I've done my best with what's left of your battery plates. The resistance they put up when I'm tying to charge them says to me they are fully charged so I relay that message to you. BUT it's very rarely true.--- You could be fighting a losing battle with a battery that's on its last gasp. Nowadays when the acid in a battery can't be got at to test it the best remaining way is with a garage Drop-Tester.-- |
|
|