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Discussion Starter #1
I seem to keep killing batteries by letting them go flat over the winter.
I once tried a few Bat-Aid tablets which didn't produce a noticeable difference but I have seen some stuff http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=160076138688&fromMakeTrack=true
that looks a bit more capable.
Has anyone had any experience with this or any other battery treatment? and could it bring a battery that can crank the engine over about 3 times on full charge back to normal?
 

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If you keep loosing batteries then you need to look into why it is happening.

Usual battery life is around 4-years these days.
If yours are constantly running flat then you probably need to get the alternator checked out.

Unless you have a really stupid music system in there are are flattening the battery with that.
 

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I concur with David. I had the same battery in my 156 for 7 years and it was still perfectly fine when exchanged it for my Brera (plus a little cash of course! ;)).

When you said it will only turn over the engine 3 times on a full charge, is that from charging with a running engine or an with an external charger? If the former then it could be that the battery is not being charged at the correct voltage, which is either an alternator or regulator issue.

If, on the otherhand, it was from an external charge and if your batteries keep dying on you then they are either being over stressed or getting too hot.

Either way, its probably something you should get an auto-electrician to take a gander at.
 

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Discussion Starter #4
Thanks for the replies. My Alfa comes off the road as soon as the grit starts going on it.
The alarm seems to have killed the battery this year over a 2 month period (should have disconnected it I guess).
It seems that once an older battery has been run dead flat there is no getting it back unless this stuff works?
I forgot to mention it's an external charger that I used. I tried both fast and slow settings. The 'battery full" indication was on in both cases as if the battery wasn't taking the charge. I guess this indicator comes on when the voltage across the terminals reaches a certain level.
 

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If your Alfa is under cover in a garage, in your situation you ideally want one of the small permanent trickle-chargers that are designed to keep a battery up over storage periods.

When I am charging a battery, I monitor the terminal voltage every hour and stop charging when the voltage is no longer rising.

When fully charged and after an overnight rest the battery voltage should be 12.6V or more.
 

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Dont know if anyone will read this now, threads going a bit cold. I had a couple of batteries explode that had been treated with BATT-AIDS tablets (as I think they should rightly be labelled). This is an inconvenient habit, especially on a bike where the battery is adjacent to pillion passengers leg. Its bad enough having to ask her to use it to walk home.
Every winter I vow I will invent a machine for excercising car batteries while their masters slumber. I'm sick of buying new ones. It must be possible to connect them to something that will cyclically load them then charge them up again. Yes, it would be great to put them on an everyday car but do they ever fit anything else???
 

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Discussion Starter #7
Thanks Wrenched, At least the Batt-Aids tablets did something!
I've given up on the idea of a miracle cure and have found a feast of suppliers and private sellers on eBay that can do a cheap battery with a 3 year guarantee. I got an unused Bosch one for the Alfa for 18 quid off eBay so the problem's gone now.
The exercise thing is true. It's always leaving a car that kills the battery IMHO.
 

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Ok. I admit I probably double-dosed my poor bike battery with the things - and the second one was new!
 

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Maplin sell a solar panel for £20, which will keep the battery topped up nicely when you aren't using it.

The downside is that the 145 cigarette lighter is disconnected when you remove the ignition key, so you need to connect it directly to the battery.

Simon.
 

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When you use these solar top-up devices, you also need to be sure that the voltage fluctuations don't cause the alarm to trigger. Haven't used one for several years, but that was certainly a problem with a (v.good!) after-market alarm I had on a previous car.
 

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I mentioned before, the battery need exercise, not just topping up to live a normal healthy life. IMO trickle charging will help very little.
 

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Well the starter draws n00 amperes, so you've got a bit of room.
Where did I put my drawing board.......
?
 

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Discussion Starter #14
I mentioned before, the battery need exercise, not just topping up to live a normal healthy life. IMO trickle charging will help very little.
I think I'll try giving the car a run every week. Maybe that'll help.
 

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As our old'un has two 6v batteries maybe I should buy an old MGB to use as a battery excercising donkey for the winter!!! Best use I can think of for 1?
Duck!!
 

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That sounds a great idea, Wrenched. Same setup as the Austin Healey 100/4, x2 6 volts, pistons x4, like saucepans, takes me back awhile, was it a 2litre unit, this next bit is totally incorrect, BMC engine, or same as the Standard Vanguard? Totally confused!!! But yes I did have one, but never finished re-building it. Years, and years ago.
 

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Discussion Starter #17
:cheese:
Nah, MGs are massive battery killers. Mine went through 2 while it was laid up.
 

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Oh dear, not even that useful then.
The 100/4 is I believe the Healey of choice, compared with the 3000 anyway. Your Audrey Hepburn to your Diana Dors perhaps. The 4-pot Healey, I know just because bedtime reading has been a 50's book on sportscars and I keep rereading the same blasted pages each night, was the Austin 2.6l (gulp yes 2.6 aparently) unit whose designation I don't know. I dont know when it began to be badged Austin Healey, but the later ones were built at Longridge, prior to which Jensen had buitl the bodies. Earlier Healeys used the 2.5l Riley Big Four. Desperately racking my brain to remember what used the TR unit - grrr.
PS said book reckons there was a Healey 100S (American market) with 132 HP! Not bad on a rev limit of 4000 or whatever. (Couldn't have been much higher with that capacity!)
 

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No wrenched, never had the money then, or now, to keep these vehicles from by-gone days. Remember paintshop mate of mine, we worked in the same garage, sprayed it Rolls Royce Regal Red, not original, but it looked superb. Going leaflet delivering, back later.
 
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