Good models of deep-cycle batteries include the Optima Batteries 8052-161 D31M, VMAX857 AGM Battery 35AH, Vmaxtanks Vmaxslr125 AGM and 35ah 12v dc deep cycle sla, according to Best Deep Cycle Batteries. Factors to consider when buying deep-cycle batteries include intended use, size, weight, initial cost and lifetime cost.
The Optima Batteries 8052-161 D31M is extremely resistant to vibration and, because of that, incredibly durable. The high-powered, dual-purpose battery provides optimal starting power. The battery can be mounted in any position, because it is spill-proof. It is also maintenance-free, translating to low long-term costs. The downside is that the battery does not provide the same type of warranty as most products in its price range.
The VMAX857 AGM Battery 35AH has a lifespan of five to eight years and is also available as a battery kit. It can be used for both cyclic and float applications. Lea tin alloys provide better service life and optimized performance. The battery is rated at 40Ah.
The Vmaxtanks Vmaxslr125 AGM can last up to 10 years and does not emit any dangerous gases or fumes. It is designed for largely re-combination capabilities and should be used with a 7-stage smart maintainer or charger.
Lastly, the 35ah 12v dc deep cycle sla battery is versatile and can be used as a UPS, electric scooter, emergency lighting or wheelchair battery. It is maintenance free, meaning that there is no need to add water or check for specific electrolyte gravity.