Bought Interstate Batteries for solar system that they recommended the batteries for the system 12 GC2-ECL-UTL. After only 18 months all the batteries are dead??? I think they gave me the wrong type of Batteries "NOT SOLAR" The warranty is 12 months. I went to talk to them and they told me Only 12 month warranty "Do you want to buy more of the same" User's recommendation: Not Solar Batteries.