Any reason you aren't looking at the T-145 (or US Batteries 145 for the economy version)
They are rated at 260, your pair of pairs would give you 520 AH. Interestingly they are rated at
To me it's more about AH's I can cram into the space, then AH per dollar.
T-145's run 140 each, under 600 for the set. US B's are running at 120 or so.
I was comparing all the Trojan 6V for capacity vs cost. I've been using drawings to mock up various configurations based on different battery sizes then comparing weight and price. I have not figured cost per amp hrs yet.
I have two areas I am considering moving the house bank to, we'll call them Area 1 and Area 2
, if I have done my homework correctly, below is what I came up with so far:
is a under the salon settee, center of boat fore and aft but slightly to port. It measures L= 21" +/-, W= 14 +/-, H= 14.5"
This would provide easy access for Wet Cell Battery Maintenance and if I build my own box within the box, 4 each 6V T-105/GC2 would fit very nicely. The T-125 & 145 would also fit well. 450/480/520 amp hrs respectively. The T-105/GC2 or EGC2 would be the most cost effective I think? Easily replaced as well.
is just aft of the engine, just forward of the water heater. It is well ventilated so heat is not a major concern. It measures L= 17" +/-, W= 14", H= 29"
In this space I am considering either 6V Trojan J-305-AC or L16H-AC because they are tall and would fit the H easily, would be centerline, and combined have 360/435 Amp hr respectively. I would be able to raise/lower them with a halyard due to their weight. But they are pricey, about $350 each.
Another option for Area 2 is four each 12V Duracell Group 31 AGMs, two stacked and laying on their side. Cost is comparable
to two of the J-305 or L16H wet cells and would provide similar amp hrs
, Trojans J/L at 360/435 amp hrs vs. 420 amp/hrs for AGM Grp 31.
I am sure there are other options, like Lifeline or US Battery. I would prefer to put the bank in Area 2, otherwise its wasted space and its centerline. Moving the batteries to centerline should help with our 1 degree list to port
BTW...I called Sams CLub Annapolis, they have several types in stock