I am happy with the Jackery. From my experience so far, one hour charging the deep cycles with Jackery gets me three bars out of five on the deep cycle charge controller, which would gets about 1.5 hours trolling and only depletes jackery by about 50%. I can do that twice if that makes sense, so the Jakery can get me an extra 2-3 hrs trolling all depending on speed and wind. I also use the jackery for other stuff on the water like charging my camera batteries and phone.
