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Battery

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chrisjcoe

New member
A previous post of mine moaned about how I have to keep charging up the battery if I don't use the car for a week. Since the last big charge over a month ago, I've used it at least once a week. Monday the car was dead.

Due to the rubbish weather, I finally got round to taking it out of the car to charge with the new Ctek 5.0 charger. Tonight it goes back in. However, I was a little surprised to see the battery description.

RAC200 12v 60Ah 575A.

When looking into a replacement some time ago, every one I looked at was at least 600A, and 70Ah. So it looks like someone has just chucked a sub-standard battery in, would you think this explains the slow turnover and quick discharge?
 
In a nutshell no. That might not be up to spec but in a petrol car would do the job. Yes Porsche will over spec the battery for the 'official one' it is a Porsche after all and a quality car but I doubt if your car needs over 550 to crank and 60 ah is sufficient but 70 is for those who like a nice 'big battery' :p Regards Mas
 
It certainly wont be making the situation any better, the lower spec battery will run out of juice that bit quicker and wont be able to sustain the starter motor for as long, etc. If your using the car for fairly short journeys the battery never gets properly re-charged, add to the fact you are probably using the heater, de-mister, headlights, etc. Its no wonder the battery get drained. If the battery is fairly old I suspect a new one will see most of your woes gone, car batteries are just like mobile phone batteries after a while they just dont perform as they did when new.... Edd
 
As Ed rightly says its probably a knackered battery , test the voltage when 'fully charged' test the voltage accross the battery when the engine is running and you'll soon have a good idea if either the battery or the alternator are defective :) It's rarely anything more sinister. I have had two batteries go on me in the last month out of 5 cars ( one an 18 month old Bosch Silver ffs) and it seems lots of folk have had their own taste in the last month. I seems to be battery fail time of year ! Mas
 
The usual journey is the 30 minute drive to work, then obviously back again. It's not going to get a massive charge in this time. You are right though, the last time involved the heater and lights! It's fully charged now so will see how it goes, a new battery is on the long list of jobs though
 
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