You a strong boy? 8-Dlosthighwaydrifter said:4 of these for $250ea Trojan L16P-AC 420Ah, 6V Deep Cycle Battery
So $250 x 2, $500 to get to 420AH
About on par with the regular T-105s, which will be easier to handle.
More of course than the Deka which IMO are just as good 95% anyway.
Won't last nearly as long as the RE line you mentioned.