10 Best Deep Cycle Batteries For RVs 2025 in the United States

The Trojan T875 8 Volt, 170 AH Deep Cycle Battery is a robust and reliable option for RV owners. With a capacity of 170 Ah and an 8-volt output, these batteries are well-suited for extended use and can handle a variety of applications beyond just RVs, including marine, solar energy systems, and utility vehicles. One of its main strengths is the reputable brand name 'Trojan,' known for its quality and durability in the deep-cycle battery market.

Additionally, the batteries come in a convenient 6-pack which can be beneficial for those needing multiple batteries for their RV setup. The GC2 size is also standard for many RV compartments, simplifying installation. However, the weight of each battery is 63 pounds, making them quite heavy and possibly difficult to handle and install without assistance. The dimensions (10 x 7 x 11 inches) are substantial, requiring adequate space for storage and installation.

Another consideration is the maintenance requirement, as these are flooded/wet lead-acid batteries which typically need regular upkeep to ensure longevity and optimal performance. They are also most effective under moderate temperatures and may degrade faster in extreme weather conditions. It is a dependable choice for those who need consistent and long-lasting power. However, users should be prepared for the weight and necessary maintenance involved.

The OPTIMA D34M BlueTop battery is a 12-volt sealed AGM deep-cycle battery designed for both starting and continuous power needs, making it a good fit for RV users who want a versatile and maintenance-free option. With a capacity of 55 ampere-hours, it provides a steady power supply, and its 750 cold cranking amps ensure reliable engine starts, even in cold weather. One key strength is its Spiralcell technology, which uses pure lead to deliver consistent power and makes the battery more resistant to vibration—important for vehicles like RVs that face rougher roads. It also offers a 120-minute reserve capacity, meaning it can provide power for an extended time without recharging, which is handy for camping or off-grid use.

The battery weighs 43.5 pounds and has dual terminals, allowing flexible installation options. Another plus is that it’s maintenance-free, so you don’t have to worry about topping up fluids or regular upkeep. On the downside, the 55 Ah capacity might be on the lower side for those needing longer deep-cycle use, especially if running many appliances or electronics. Also, while it’s durable and lasts longer than traditional flooded batteries, it is somewhat heavy, which could be a consideration if weight is an issue.

This battery suits RV owners looking for a dependable, dual-purpose battery with easy maintenance and solid starting power, but those needing higher capacity or lighter weight might want to consider other options.