battery life

[sam]

I installed Lifeline AGM batteries upon commissioning the boat when new. I used GPL 27T's on the engine start and bow thruster service. I used the 6 volt GPL 4ct's in the house bank ( total of six, 660 amp hour capacity)

I just had to replace both of the GPL27T's. Boat was commissioned in July of 2008, so a bit over 7 years life obtained from those two. Hope to get at least a year or more from the house side, as they have been managed carefully.

Just data for those interested,

Sam

s/v LONGHAWKI B43 2008

[Mike Brown]

James, we're talking Apples and Oranges with the Deka 4Ds. While you had AGMs I had the Wet Cells which were rated much lower in AMP Hours. I had seen two different ratings for the wet cells with one estimate in the low 130Ahr range and the other at 160Ahr. I had two Deka 4Ds rated at approximately 260 to 320 Ahr between them and that only lasted two years tops. I swapped them out for 4 Trojan 6V rated at 225Ahr a pair for a total of 450 Ahr. There's no comparison in performance between the Deka's and the Trojans.
Mike