Wired wrong. Breaker tripped.. bad battery and where did you find "GEL" 12 volt RV size batteries.. They don't make GEL in the sizes we use in fact they don't much make GEL any more.. AGM yes but not GEL
And if you bought OPTIMA (which is sometimes marketed as GEL even though they are AGM) you got ripped off only 2/3 the capacity of standard AGM batteries at 4/3 the price or more.
NOTE: Gel are very finicky eaters You charge them as fast as I do my Flooded wet's and they die and die fast.. AGM's on the other hand are the opposite. you can charge them same as Flooded. Some makes even faster.
