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Author Topic: Battery drain / charging problem.  (Read 12303 times)

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Entwood

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Re: Battery drain / charging problem.
« Reply #15 on: 27 December 2018, 17:26:31 »
Quote from: Migv6 on 27 December 2018, 17:11:44
Ok, got two hours to put some charge in my spare but flat battery. Will do that and hope for the best.

Average car battery is 60 - 80 amp/hours, yours is 70% depleted at 11.7 volts .. so contains about 20 - 25 amp/hours

Average car charger will charge at 10 amps .. so 2 hours = 20 amp/hours

in two hours your battery will be at 40-45 amp hours capacity ... about 60% charged ...

methinks it will not last very long, and you will probably damage the battery as well ....   :(

« Last Edit: 27 December 2018, 17:29:04 by Entwood »
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Migv6 le Frog Fan

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Re: Battery drain / charging problem.
« Reply #16 on: 27 December 2018, 17:30:55 »
Might be able to arrange borrowing a company vehicle and leave the battery on charge here overnight. would still have to drive it home in the dark tomorrow night though. I should have two charged up batteries by then, so much better chance of success.
Might give the guvnor a call and see if I can do that.
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Entwood

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Re: Battery drain / charging problem.
« Reply #17 on: 27 December 2018, 17:31:43 »
Quote from: Migv6 on 27 December 2018, 17:30:55
Might be able to arrange borrowing a company vehicle and leave the battery on charge here overnight. would still have to drive it home in the dark tomorrow night though. I should have two charged up batteries by then, so much better chance of success.
Might give the guvnor a call and see if I can do that.

Now that is a bloody good idea !!!  :y :y :y
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zirk

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Re: Battery drain / charging problem.
« Reply #18 on: 27 December 2018, 18:01:01 »
Quote from: Migv6 on 27 December 2018, 17:30:55
Might be able to arrange borrowing a company vehicle and leave the battery on charge here overnight. would still have to drive it home in the dark tomorrow night though. I should have two charged up batteries by then, so much better chance of success.
Might give the guvnor a call and see if I can do that.
Ideally you need a bit longer than that, fully charge the battery over a 24 hour period, slow charging if preferred if time permits, when fully charged leave the battery somewhere cold for another 24 hours to rest back into its natural state.

After this process and before reconnecting back in the Car a quick voltage check will give a good clue as to the condition of the battery, 12.5 to 12.6 should tell you the battery is good to go, reconnect back in the car start and remeasure the volts, on a fresh fully charged battery I would expect to see 14V+ straight away from the Alternator at 2k even fully loaded with lights on, rear screen etc.

Assuming its not a Maintenance Free Battery, check and rectify any low Battery Acid level and rectify before Charging.
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Migv6 le Frog Fan

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Re: Battery drain / charging problem.
« Reply #19 on: 27 December 2018, 18:05:55 »
Got permission to borrow an Audi A6 quattro 3.0tdi Le mans. It was the chairmans car, but now a spare. Should be a luxurious drive home tonight, and as its an Audi, don't need to bother trying to find the indicator switch.  ;D  8)
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Migv6 le Frog Fan

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Re: Battery drain / charging problem.
« Reply #20 on: 27 December 2018, 18:24:50 »
Anyhoo…………….diagnosis isn't complete yet, but theres a good chance I need a new regulator. Anyone know where to get one, or what exactly to look for or ask for when searching for one please ?
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Kevin Wood

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Re: Battery drain / charging problem.
« Reply #21 on: 27 December 2018, 19:44:42 »
I've had a couple of regulators from these guys and this is the one for the 2.6/3.2: https://www.rotatingelectrics.co.uk/new-12v-alternator-regulator-to-fit-bosch-vauxhall-opel-gm-139044
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Migv6 le Frog Fan

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Re: Battery drain / charging problem.
« Reply #22 on: 27 December 2018, 20:35:21 »
Great, thanks Kevin. Will order one tomorrow if I need one, and I strongly suspect I will . :y
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Migv6 le Frog Fan

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Re: Battery drain / charging problem.
« Reply #23 on: 29 December 2018, 23:18:49 »
Ordered a regulator yesterday via Kevins link. It arrived from Norn irn in the post this morning !  :o
Havent had time to properly diagnose, but Im probably going to need one and for the sake of £18 I thought I may as well get one.
Hope to find time to fit it between night shifts tomorrow. Im wondering if I can swap regs. over without actually removing the alternator.
Should find out tomorrow.  :)
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VXL V6

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Re: Battery drain / charging problem.
« Reply #24 on: 30 December 2018, 13:37:46 »
Quote from: Migv6 on 29 December 2018, 23:18:49
Ordered a regulator yesterday via Kevins link. It arrived from Norn irn in the post this morning !  :o
Havent had time to properly diagnose, but Im probably going to need one and for the sake of £18 I thought I may as well get one.
Hope to find time to fit it between night shifts tomorrow. Im wondering if I can swap regs. over without actually removing the alternator.
Should find out tomorrow.  :)

Good luck with trying to fit it without removing the alternator...!

Both times I've had to replace the regulator I've removed the alternator.
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Migv6 le Frog Fan

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Re: Battery drain / charging problem.
« Reply #25 on: 30 December 2018, 16:11:53 »
Soon discovered that to be impossible.  ;D
Anyway, job done now. Took about 2 1/2 hours, quite awkward, but all back together and seems fine now.
Thanks again to Kevin Wood for the link for the best place to source the regulator.  :y
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Kevin Wood

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Re: Battery drain / charging problem.
« Reply #26 on: 30 December 2018, 16:41:55 »
No problem. Glad it's sorted. :y
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Tick Tock

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Re: Battery drain / charging problem.
« Reply #27 on: 30 December 2018, 17:14:52 »
Glad to hear you're sorted now  :y

Just out of interest, is the 2.6 / 3.2 regulator the same as earlier regulators on the 2.5 / 3.0 ?
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Migv6 le Frog Fan

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Re: Battery drain / charging problem.
« Reply #28 on: 30 December 2018, 17:31:44 »
I believe they are slightly different.
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VXL V6

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Re: Battery drain / charging problem.
« Reply #29 on: 30 December 2018, 23:09:39 »
Quote from: Tick Tock on 30 December 2018, 17:14:52
Glad to hear you're sorted now  :y

Just out of interest, is the 2.6 / 3.2 regulator the same as earlier regulators on the 2.5 / 3.0 ?

No they are very different.

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