There is a slight difference in the plate formulation. The SLI version is set up to give maximum current, but seldom if ever deeply discharged. They trade off high discharge capability for tolerance to deep discharge and lots of cycles. The SLI version does not see man full charge discharge cycles during its life time while that is the routine for the deep cycle battery design.
At least that's how it was when I worked for Gates Energy Products where the Optima originated. Red S. Red's R/C Battery Clinic http://personal.bellsouth.net/lig/r/e/redscho ----- Original Message ----- From: Bill Malvey <[EMAIL PROTECTED]> To: Red Scholefield <[EMAIL PROTECTED]>; RCSE <[EMAIL PROTECTED]> Sent: Wednesday, December 12, 2001 6:08 PM Subject: Re: [RCSE] Optima Batteries > OK, I just bought an Optima deep cycle marine battery. It was available > locally at Pep Boys. I could not find the yellow top deep cycle batteries. > So here's my question, what is the difference between the blue top marine > deep cycle and the yellow top deep cycle batteries. Optima says they are > different from the red top SLI (starting, lighting, ignition) batteries, but > really does not spell out the difference between the two kinds of deep cycle > batteries. The blue top marine has a second set of terminals which fit the > connections for my winch perfectly. > > I have the D34M. Both it and the yellow top D34 have identical specs except > for these: > > Yellow weighs 42.9 pounds, blue = 43.5 pounds > Yellow SG = 1.342, Blue SG = 1.32 > > Everything else on the Optima spec sheets is identical. > > Any ideas Red? > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > Bill Malvey > Ladera Ranch, California > > > > > > RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
