which Optima
Rennlist Member
Joined: Aug 2005
Posts: 1,353
Likes: 4
From: Huntington Beach, CA
Originally Posted by Tricone
I am also in the market for a battery, and have more or less decided on an Optima Red or Yellow Top. When I look at my battery set-up in my 993TT, it seems to me that the post orientation of the Optima Model D35 is much better than the Model D75/35. The battery size is the same. However, with the D35 in place, the positive post is closer to the bumper, much like the battery that the Optima will be replacing. In order to get the 75/35 to sit with the correct post orientation, you have to place the battery in the "tray" with the GM-type side posts facing against the fender, which is OK, but defeats the purpose of having both the top posts and the side posts. Does this logic make sense??
Intermediate
Joined: Dec 2006
Posts: 42
Likes: 0
From: Los Altos, CA
My 75/35 had side and top posts. The side posts came with plastic insert covers & I just used the top posts. No problem with fitment for me.
May I ask which way you oriented the battery on the tray? Does your side posts face outward, towards the boot, or inward, towards the fender? If the side posts are oriented towards the boot, then isn't the negative terminal closest to the front bumper? In my car, I wasn't sure if the cables can stretch far enough if the post orientation was reversed.
Rennlist Member
Joined: Aug 2005
Posts: 1,353
Likes: 4
From: Huntington Beach, CA
The side posts are to the fender side. I needed to move my ground/negative cable position slightly, but otherwise a good fit. Both cables should be able to reach in this postition.
Intermediate
Joined: Dec 2006
Posts: 42
Likes: 0
From: Los Altos, CA
The side posts are to the fender side. I needed to move my ground/negative cable position slightly, but otherwise a good fit. Both cables should be able to reach in this postition.
Given your info, I might just order the Optima 35, which has the same dimensions, but forgoes the side terminals, and has the top post terminals' polarities oriented oppositely.
Intermediate
Joined: Dec 2006
Posts: 42
Likes: 0
From: Los Altos, CA
Please let me know how this battery works out. I am needing one also. Thanks
Will do. FYI, I just ordered it from here:
http://www.1st-optima-batteries.com/
Rennlist Member
Joined: Sep 2006
Posts: 7,953
Likes: 565
From: Onterrible
Originally Posted by CWay27
Thanks for the info but I guess it should be best to go with 1200 series.
https://rennlist.com/forums/showpost...69&postcount=1
Pro
Joined: Feb 2002
Posts: 613
Likes: 0
From: New Jersey
FYI. I've had the Redtop for about 3 years. Got it at Costco. Maybe it's the type of battery, but I notice that if the car sits too long (about 1.5 weeks) the unit drains too much even with the key out of the ignition.
I have a battery charger, but I don't use it all the time, just in the winter. Short story is that the Redtop has already gone bad. It has around 7500 miles on it.
I don't think the sealed batteries like to sit unused. So if your car is occasional use, I would suggest a standard battery.
I have a battery charger, but I don't use it all the time, just in the winter. Short story is that the Redtop has already gone bad. It has around 7500 miles on it.
I don't think the sealed batteries like to sit unused. So if your car is occasional use, I would suggest a standard battery.
