Optimas-- d34m or d31m???

(zaner1) · (zaner1) **Join Date: Apr 2004** 05-28-2007, 7:05 PM

Came across a smokin deal on optimas through a buddy. Which one is best or is there much difference?

(zaner1) · (zaner1) **Join Date: Apr 2004** 05-29-2007, 7:49 AM

anyone??

(flux) · (flux) **Join Date: Jun 2003** 05-29-2007, 7:54 AM

One is bigger.

(jwharan) · (jwharan) **Join Date: Nov 2006** 05-29-2007, 8:08 AM

d34m is much more popular

(deuce) · (deuce) **Join Date: Mar 2002** 05-29-2007, 8:22 AM

I actually was in need of a battery this weekend and ended up with a yellow top from Costco... $183.....OUCH.... I just wanted a Costco marine, but they were out....so the Yellow Top was my next choice....

(wake1823) · (wake1823) **Join Date: Dec 2005** 05-29-2007, 4:47 PM

Before you but the optima, why do you need it? there are better or just as good out there.

(zaner1) · (zaner1) **Join Date: Apr 2004** 05-29-2007, 5:19 PM

Had them in my last boat and had good luck with them. Just dont remember which ones I had, not to mention at the price I'm getting them at I'm sure I probably cant find better for less.

(1boarder_kevin)

Sam,
Could you elaborate on some other choices and cost? I am in the market and would like to know what is actually better.

(mhayes) · (mhayes) **Join Date: Jul 2004** 05-30-2007, 5:04 AM

D31M has more power (i.e. cranking amps and reserve capacity) than the D34M

http://www.optimabatteries.com/publish/optima/americas0/en/config/product_info/marine/technical_specs.html

(evil0ne) · (evil0ne) **Join Date: Sep 2006** 05-30-2007, 7:38 AM

zaner1, would you like to pass on those prices to anyone else?

(zaner1) · (zaner1) **Join Date: Apr 2004** 05-30-2007, 12:20 PM

evilOne,
I have a buddy who works for a large company that builds trucks. The company made a deal to start using optimas, and as employees they are allowed to purchase two batteries a year at this price. $65.00 ea.

(evil0ne) · (evil0ne) **Join Date: Sep 2006** 05-30-2007, 2:08 PM

I'll take 2.

(super_air) · (super_air) **Join Date: Jun 2005** 05-30-2007, 2:24 PM

The d31 is also larger and heavier than the d34, I run 8 of the d34's in my boat and so far they have been sufficient for my needs.