Porschenut in Colorado posted this about the U911-50. I think he is right. The price of sealed battery(s) is nothing compared to the damage of a boiled battery.
Porschenut in Colorado posted this about the U911-50. I think he is right. The price of sealed battery(s) is nothing compared to the damage of a boiled battery.
Haasman
Registry #2489
R Gruppe #722
65 911 #302580
70 914-6 #9140431874
73 911s #9113300709
I'm not sure those Interstate batteries are Sealed AGM batteries. I think they are traditional wet batteries. Yes you can get a Sonnenshein sp? Battery, but get out you wallet, they are not inexpensive. Many threads about them. I wanted less expensive options as noted above.
Last edited by merbesfield; 12-30-2013 at 06:29 PM. Reason: Additional thoughts
Mark Erbesfield
2018 911 Carrera T 7spd manual 😊
1973 911S #9113301282
1957 356A #58648
1966 Toyota Land Cruiser FJ45LV
1982 Toyota Land Cruiser FJ40
1977 Toyota Land Cruiser FJ40
1972 Toyota Land Cruiser FJ40 FST (Factory Soft Top)
1971 Toyota Land Cruiser FJ40 “Patina Queen”
1979 MB 450SL "Dad's old car"
2019 Cayenne "Wife's car"
I agree with you Mark, the interstates are not sealed AGM but rather normal lead acid but with non-venting caps. There is a vent outlet on the side of the battery for you to attach a hose to and direct the acidic fumes overboard instead of on your trunk floor.
Early S Registry member #90
R Gruppe member #138
Fort Worth Tx.
This May will be the fourth year on my sealed Interstate U911 batteries. Wet-sealed and no issues. Finally! As long as it is driven weekly they stay charged for the next drive. Fits right and no regrets.
Cheers!
Jeff
1973.5 911T
S Registry #1977
Point 5 Registry #1
I've use the U911 in the past and have been very happy with it. The big problem is convincing a dealer that it actually exists.
Richard Newton
Car Tech Stuff
Honestly, for a bunch of guys who nitpick every non-OEM detail of every car posted for sale, I'm really surprised that people would consider anything other than original Yeah, there are big advantages to modern day batteries, AGM, Lithium etc. But there are modern day engine mount and suspension and radio and other advances too and we don't consider those acceptable, so why are batteries up for debate (on original cars...all others ignore this mini-rant and continue enjoying driving your cars).
The two potential knocks against OEM are (1) price and (2) leakage. Well, price is what it is. You knew that when you picked a Porsche to drive. It was never going to be cheap, even before investors started driving the prices up. As for leakage, the modern, non cut-rate lead-acid batteries are well sealed. The Porsche versions have a vent, and if you actually use a rubber vent hose and run it below the battery box, there should be no issues. Or so says Fred, the master mechanic at my dealership. He's been working on these cars for 42 years, so I'm willing to give him the benefit of the doubt.
I am price conscious too. As I mentioned, when these die, I'll recycle the innards and mount AGM, Lithium ion or whatever clever battery technology appears at that point inside the cases.
Picked these up this morning. At the dealership. They are really ruggedly built. And they fit the car like they were made for it
Early 911S Registry # 2395
1973 Porsche 911S in ivory white 5sp MT
2015 Porsche Macan S in agate grey 7sp PDK
price on those P battery's
Early 911S Registry #750
1970 911E - The Good Stuff
2001 Toyota Landcruiser
I purchased a pair of the Porsche batteries in August, paid just under $400 for 2 batteries, 2 new ground straps and 2 new + terminals.
Part number for the batteries is 999-611-014-91, price online appears to be between $165-$200 ea
Keep in mind these are empty and need to be filled with acid, my dealer filled them for free (included in the price of the battery)
Same pricing. Plus tax. Dealer filled for free. They shipped dry from Porsche's PA warehouse in 5 days over Christmas. Not the cheapest, but not insanely priced, given the perfect fit and "properness". The -90 version was a white case I believe, superseded quite some time ago by the black -91.
Early 911S Registry # 2395
1973 Porsche 911S in ivory white 5sp MT
2015 Porsche Macan S in agate grey 7sp PDK