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Old 10-12-2015, 08:03   #16
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Re: 6 T-105 OR 4 TROJAN J305E-AC?

Originally Posted by Sailorman Ed View Post
I am trying to decide how much battery to add. Based on 530 watts of solar, can can easily fit 4 of the J305E-AC ( 305 AHr) or with difficulty, 6 of the T-105. Previously, we had 270 watts and 359 AHr of gel cells so even 2 of the T-105s are a 25% improvement. We expect to use about 20% more electricity on the new boat. Is 530 watts too much for 450 AHr? The J305 are a 20% premium per annualized AHr/life cycle.

Also looked at the Duracell EGC2 (230 AHr) - they are 20% less than the T-105 and slight shorter ( = less space under the plates?) Gets confusing quickly.

Just to know, how old were the gell cell? Used as living aboard all the day or what else?

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Old 10-12-2015, 08:10   #17
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Re: 6 T-105 OR 4 TROJAN J305E-AC?

Just to know, how old were the gell cell?
I was told they were 5 years old when I bought them for $100. We probably used them for a year on weekends before we moved on full time for a year and then it was another 10 months (fridge running full time with solar) before we sold the boat. Best guess is that they were 8 years old when we sold it and I believe the new owner is still using them.

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