Car battery do i need new one?
Car battery do i need new one?
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Discussion

vrooom

Original Poster:

3,763 posts

298 months

Wednesday 13th March 2013
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I left my car interior light on, for 2 days, my battery is flat to 3volt available, do I need new battery or can I jump start it?

Bear Phils

891 posts

167 months

Wednesday 13th March 2013
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You could try recharging it overnight if you don't have to move it now

Ozzie Osmond

21,189 posts

277 months

Wednesday 13th March 2013
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Yes, jump it.

But how old's the battery? If it's getting on a bit you might as well buy a new one.

HustleRussell

26,662 posts

191 months

Wednesday 13th March 2013
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They don't like being fully discharged at all but as above, if they're not too old they can usually be revived by a nice long charge. I flattened my battery yesterday (left the side lights on), and with a jump start and a night on a battery conditioner it seems to be fine. My service folder tells me it's only 18 months old though.

Craikeybaby

12,165 posts

256 months

Friday 15th March 2013
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On a similar note, is there a way to test if a battery is on the way out? My girlfriend's Fiat 500 is about 4 years old now and I've noticed its struggling to start in the mornings, could this be the battery on the way out?

Ozzie Osmond

21,189 posts

277 months

Friday 15th March 2013
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Craikeybaby said:
On a similar note, is there a way to test if a battery is on the way out? My girlfriend's Fiat 500 is about 4 years old now and I've noticed its struggling to start in the mornings, could this be the battery on the way out?
In that situation I'd just buy a new battery. Can save hours of fiddling about with chargers etc before eventually finding you need a new battery anyway.

HustleRussell

26,662 posts

191 months

Friday 15th March 2013
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I wouldn't. I'd take it to Halfords and have them fully check the battery for free in the car park with their super-dooper Bosch testing device. Not often I'd recommend a visit to Halfords but their battery test kit is top notch.

Mr Happy

5,905 posts

251 months

Friday 15th March 2013
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HustleRussell said:
I wouldn't. I'd take it to Halfords and have them fully check the battery for free in the car park with their super-dooper Bosch testing device. Not often I'd recommend a visit to Halfords but their battery test kit is top notch.
Then go to your local Andrew Page to buy the battery.

Halfords had a Bosch one up at 129.99, the same battery from AP was 78.00 including VAT!

HustleRussell

26,662 posts

191 months

Friday 15th March 2013
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Euro Car Parts are good Bosch stockists too.

Snowboy

8,028 posts

182 months

Friday 15th March 2013
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Depends on the weather where you live.

Because of science a flat battery freezes easier than a charged battery.
If a battery freezes it buggers all the internals and it'll never work well again.

So, if it was under 0 you might need a new battery, depending on exactly how cold it was, exactly how much charge was left, and exactly what science is at play.
(probably closer to -10 needed to really screw the battery though)

Mr Happy

5,905 posts

251 months

Friday 15th March 2013
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HustleRussell said:
Euro Car Parts are good Bosch stockists too.
They are, but AP were still cheaper! The battery from ECP was going to be 95 (which, to be fair to them was Halfords' Trade card price too)

Craikeybaby

12,165 posts

256 months

Friday 15th March 2013
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I think I'll take it to Halfords, I wasn't sure if something more advanced than a volt meter was needed to check battery health - it seems it is.