Even a Deka GC10 has more AH than a T-605. (215AH vs 210AH)
I'm not bad-mouthing Trojan or glorifying Deka.
Nor do I trust the AH and Run-Time specs published by any of the battery manufacturers 100% since different test methods and test equipment are used.
AH and Run-Time can be used to compare the different grades of batteries produced by the same manufacturer, but between brands, small differences are probably meaningless.
Of the three specs commonly used for comparison (AH @ 20Hr rate, Minutes @ 75A and weight), weight is probably the most difficult for the manufacturer to shade in their favor.
My next set of batteries will be a step up, or maybe two, from the standard 225AH and most likely be the brand that I can have setting in my cart for the least expense, including shipping and tax.
It takes a bit of research to find out the most cost effective batteries for your cart because prices and availability vary by location, but it is worth the effort.
