New battery for the 957
#1
New battery for the 957
Just replaced the battery on my 2009 CS. Got a Super Start Platinum AGM from O'reillys. Glad I checked here in the archives on this subject. As was mentioned, everywhere I checked the parts catalogs showed that an H8 was the indicated size. I checked the battery that I had and it indeed was an H9. Don't know why everyone has it wrong, but they do. Replacement battery fits perfect and fired the P!g right up. Kept a charger hooked up when I made the swap and got no codes thrown or problems. Only small issue was the battery vent plug was inserted on the side I needed and I buggered it up trying to get it out, but eventually got it out, vent line in and plugged the other side. Overall, job was pretty easy and straightforward.
#2
RL Community Team
Rennlist Member
Rennlist Member
You sure you got an AGM battery? I thought those (Optima being the most well known) were sealed and didn't require a vent line. Can't recall if the Napa H9 AGM I put into my 957 had a vent line or not, but I'm thinking not.
#3
Rennlist Member
Optima is not vented but AGMs from Bosch, Interstate, etc. do have vent outlets on either side.
#4
RL Community Team
Rennlist Member
Rennlist Member