seacliff

My 1995 Carrera 2 needs a new battery. I've previously had it replaced during a servicing while in the shop. I'd like to attempt it myself. How hard is this to do? It looks to me like you have to remove the spare to get to the mounting bracket - this must be under the battery as I don't see anything visible securing the battery.

Are there any tricks to replacing the battery? Providing the mounting bracket is easy to reach and remove with the tool provided in the kit it seems straightforward just like any other battery replacement.

Thanks!

seacliff

porscheralph

You will need to remove the spare (loosen and remove nut) and then remove battery holddown plate on left side of battery as you face the car. Easy job if you are careful. Make sure you get the correct physical size battery. Then re-install the holddown and the spare - not hard.

Sooner

On a scale of 1-10, this would be a (-1). If you can remove the spare tire, you can replace the battery.

NC TRACKRAT

Safety Procedures for working with a battery: 1) Remove any rings from your fingers. 2) Disconnect Negative terminal clamp first and cover the posts with plastic caps while removing the old battery. 3) While installing the new battery be sure its posts are protected with caps also. 4) Install Positive, then Negative terminal. 5) Be sure to get a battery with the appropriate vent outlet and be sure to re-attach the vent hose. If you have any corrosion evident, clean up same with baking soda or a commercial battery corrosion inhibitor spray before installing the new battery. You may wish to buy a "Battery Mat" to place under the new battery which can absorb any potential leak of acid.

seacliff

Thanks much Ralph, Sooner and NC! I appreciate the info and good word on safety too.

seacliff

IXLR8

I just replaced mine a couple of months ago.

I recall the hold down bolt and battery clamp nuts being a 13 mm hex head.

I installed an East Penn Pow-R-Surge 7000, group 48 battery. Other than the case color, it was 100% identical to the Porsche branded battery that I removed.

Speedyellow993

Super simple. 5 Mins max if you have no idea of what you have to do.

Speedyellow993

Make sure you have the right size. Interstate makes one

IXLR8

Either group 91 or 48.

I believe that the 91 was the original fit, but Porsche Canada has been selling the slightly taller group 48. As for the length and width, they are the same.

The 48 gives you 70 Ah compared to 50 Ah in the group 91. And the reserve capacity is a bit better in the group 48.

With the 48 being 16 mm taller, it tends to interfere with the plastic trim panel. I neatly trimmed mine for a good fit.

DanL993

When I removed the battery for the first time this winter, I had some difficulty getting the hold down bolt to line up correctly with the hole. I almost cross threaded it several times and only got it to work by removing the rubber and metal washers. It seemed that the lip on the battery was just a tab too thick.

Once I got it all tightened down I removed the bolt, replaced the washers, and replaced the bolt.

Anyone else had this issue?

IXLR8

What rubber and metal washers?

The only reason it was a tighter fit is because I use a battery mat under my battery and a piece of 1/8" closed cell foam pad under my hold-down clamp.

The mat raises the battery a tad. As a result, the rear lip of the battery does not engage the rear hold-down channel easily.

Rinty

seacliff:

I put an Interstate 91 in mine; drops right in. Make sure they give you the vent kit.

If I can do it, anyone can.

Steve Weiner-Rennsport Systems

Some good advice here,....

I also power the car with a 9v battery through the lighter socket during this process to maintain radio codes and Readiness codes in the ECU.

993Maineiac

I just leave the Porsche trickle charger plugged in which probably isn't a great idea but has never failed me. As others have said this is a less then difficult job.

IXLR8

I know you haven't had any bad luck doing so, but have you ever checked the output on a scope? I wonder if it puts out pure DC.