When you're looking for something to fit your battery needs and you don't want to worry about running out, well look no further. Our Mammoth 12v 344Ah deep cycle battery is where Monster Marine Lithium has designed, tested, and built a battery like no one else. Built out of Lithium Iron Phosphate technology, using only Grade A cells, installing the most advanced BMS system on the market, and adding in our rugged internal construction. This battery is built to handle all the uses and conditions you have for it! With a 4000+ charge cycle rating it will last up to 10x longer than your typical SLA battery. Although we are marine battery specialist this battery is optimized to be used in: marine, RV's, Solar Energy, and electric vehicles such as Golf Carts.