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Hard to believe, but after only 34 years my original battery will no longer hold a charge. After 24 hours with applied 12+ V, the best I see is a bit over 8V. You'd think German engineering would prevail, but perhaps some system failure killed the battery.
So, it's time for a replacement. In my environment (S Cal), cold is not an issue.
Not sure of your application, but if your year calls for the same as an 85, this is the one you need, cranks a 20w50 lubed engine over in the cold as if the spark plugs were out.
There's been a lot of discussion on different batteries for our cars. The AGM is a good but spendy option. Just be sure you get the right one for your year, as some places have 'confused' listings.
Personal experience with a few different batteries and some charging system challenges (weak battery ground strap) led me finally to put in a Wal-Mart top-line battery. It is --exactly-- the same case and weight as the top Duralast Gold flooded battery, for about half the cost. There are only a few actual battery manufacturers in the US, so we seem to end up buyinga label and a warranty. Wal-Mart has a no-questions-asked replacement policy, vs the aggravation I got from Autozone when trying to get warranty adjustments. There are a LOT of Wal-Marts around to, so no real concern about getting stranded far from home if something goes frutz.
Hard to believe, but after only 34 years my original battery will no longer hold a charge. After 24 hours with applied 12+ V, the best I see is a bit over 8V. You'd think German engineering would prevail, but perhaps some system failure killed the battery.
So, it's time for a replacement. In my environment (S Cal), cold is not an issue.
??
What makes you think it is the original 34 year old battery ?
It died, says Porsche on the top, and the original sell date is followed by BC? Dead giveaway. Porsche offers such a generous warranty (and charges nicely for it) that ther may in fact still be a little original battery equity lurking back there under the spare tire well.
In our climate we are lucky if we get two years of service from a battery-one of the down sides of car ownership in this part of the world and as for battery quality ironically the shortest battery life I had was from a Bosch battery which sad to say just and only just lasted past the 1 year warranty period.
34 years from the original battery- somewhat amazing?
The original owner kept a logbook with receipts and commentary; great records for the first 25 years or so. Lots of detail: his notes even discussed the use of a Volvo O2 sensor vs OEM, and impressions of multiple tire performance before settling upon Michelin. During that period, there is nothing to indicate a new battery. The next owner (family) drove the car about 20k miles over 6-7 years. He kept no records, but said that he did not change the battery or anything else.
The battery has a Porsche sticker on it.
Regardless of provenance, that battery is now DEAD.
Not sure of your application, but if your year calls for the same as an 85, this is the one you need, cranks a 20w50 lubed engine over in the cold as if the spark plugs were out.
+1 for this battery......lots of research by me and I picked this one also.
............. The next owner (family) drove the car about 20k miles over 6-7 years. He kept no records, but said that he did not change the battery or anything else.
One can only hope that he changed oil , coolant, brake fluid, possibly tires during that time......along with the battery
02-13-2016, 08:06 PM
Dead battery
Porsche offers such a generous warranty (and charges nicely for it) that ther may in fact still be a little original battery equity lurking back there under the spare tire well.
