With that in mind, I’ve settled on the fact that I personally get the most bang for my buck out of Duracell deep cycle marine batteries. These batteries are made by Johnson Controls, the same ...
It operates at 6 and 12 volts, with 5-amp, 75-watt charging for lead-acid automotive, marine, and deep-cycle batteries, including flooded, gel, AGM, and maintenance-free, plus lithium-ion batteries.