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I am having issues with my boxster s it keeps draining the battery over a couple of days I have tested the drain and it sits at about 68ma with a fully charged battery

the battery is new and is ok when running the car each day but leave it for a day or two and it has a problem starting. I have pulled every fuse disconnected every unit I can find even the one under the left seat and there is no change to the load removed the 2 number plate lights but still no drop of in the mamps 65.5 is the best i can get any advice

Ian

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Porsches for some reason seem to chew up batteries. I have had my C4S for 4 years and I have had 4 batteries. 2 were OEM Porsche batteries which are not good. Third one was an Interstate battery that I recently replaced after 9 months due to a bad cell. The new one was replaced by my Indy under warranty. He said that on the third battery, no one "cleared the codes". So it seems, if one is to do this DIY then you need to clear the codes after the replacement. This I know nothing about only what my technician told me. A service advisor at the local Porsche Dealer told me in order to help preserve the battery, he suggested that I lock the car, even in the garage if I am leaving it longer than for a few days. Also I was told to make sure that you hear the distinctive click when taking the car key out of the ignition, somehow that turns off some of the electronics. If you have AAA, they will come out and test your battery with a new service that they have now. It was sure handy when I was stuck about 15 miles from home in a gas station with only a click, click coming from the starter.

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Actually, a far more useful suggestion would be to buy a quality battery maintainer and use it when the car is going to sit…………

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My C4 will drain the battery down in about about10 days if it sits.

JFP has the right idea. I have a really good battery charger with auto shutoff and I just throw it on with a 2 amp trickle charge when it's going to sit.

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