10 Best Deep Cycle Batteries For Trolling Motors 2025 in the United States

The Renogy Deep Cycle AGM 12 Volt 100Ah Battery is a robust option for those needing reliable power for trolling motors. It boasts a high capacity of 100Ah and operates at 12 volts, making it suitable for prolonged use. The battery's cycle life is enhanced by its AGM (Absorbent Glass Mat) design, which ensures safe, maintenance-free operation. Weighing approximately 63.9 pounds, it is on the heavier side, which might be a consideration for some users. However, this weight is fairly standard for deep-cycle batteries and reflects its substantial capacity and durable construction.

A notable strength is its low self-discharge rate of just 3%, meaning it retains charge well when not in use, an essential feature for intermittent activities like fishing trips. Additionally, the battery can handle extreme temperatures (-4 to 140°F), offering reliable performance regardless of weather conditions. This makes it especially useful for RVs, cabins, and off-grid systems where environmental control may be limited.

One drawback is the single battery unit, necessitating further purchases for those requiring more power through series or parallel connections. The 1100A max discharge current for 5 seconds is impressive, ensuring it can power a variety of appliances, but might be overkill if you're only using it for a trolling motor. However, its flexibility to support other appliances like fridges or microwaves is a plus for multi-use scenarios. In terms of maintenance, the AGM technology means it’s virtually maintenance-free, which is a significant advantage for those who prefer a hassle-free solution. The Renogy Deep Cycle AGM battery is a reliable and high-performing choice for those needing dependable power for their trolling motors and other applications, though its weight and need for additional units for larger setups may be considerations.

The Weize 12V 100Ah LiFePO4 Lithium Battery is a high-capacity deep-cycle battery designed for trolling motors and other applications such as RVs, solar systems, and camping. This lithium battery stands out for its longevity, boasting over 2000 cycles at 100% depth of discharge and up to 8000 cycles at 50%. This is significantly longer than typical lead-acid batteries, ensuring cost-effectiveness over time. The built-in Battery Management System (BMS) enhances safety by protecting against overcharge, over-discharge, overcurrent, short circuits, and temperature extremes.

Another valuable feature is its low-temperature cut-off, which ensures the battery performs well in cold conditions. The battery is also lightweight at 26.4 pounds, making it easier to handle and install compared to heavier lead-acid alternatives. However, it is crucial to note that this battery requires a dedicated lithium battery charger and should not be used for starting engines or in golf carts. Additionally, it's not suitable for users who need more than four batteries in series or parallel configurations.

The battery's safety and environmental friendliness are commendable, with no risk of thermal runaway or toxic emissions. For customer service, Weize offers a 10-year guarantee, but returns must be handled directly through the seller rather than Amazon. This battery is ideal for those looking for a reliable, long-lasting power source for their trolling motors and other similar applications.

The OPTIMA D34M BlueTop battery is a solid choice for anyone looking for a reliable deep-cycle battery to power their trolling motor. One of its main strengths is its dual-purpose functionality, making it suitable for both deep cycling and starting applications. This versatility can save you from needing multiple batteries. With a capacity of 55 Ah and 750 Cold Cranking Amps, it delivers adequate power for most boating needs, while its reserve capacity of 120 minutes ensures that you have consistent performance even during prolonged use.

Another noteworthy feature is the SpiralCell Technology that uses 99.99% pure lead, allowing it to outperform traditional flat-plate batteries. This technology provides optimal starting power, even in less-than-ideal weather conditions. Additionally, the battery is designed to be maintenance-free, which adds a level of convenience for users who don’t want to deal with regular upkeep.

The battery's construction makes it 15 times more resistant to vibrations compared to standard flooded batteries, enhancing its durability—an important factor for marine applications. The battery also boasts a longer life, potentially lasting up to three times longer than regular flooded batteries. However, at 43.5 pounds, it may be heavier than other options, which could be a concern for some boaters looking for lightweight solutions.