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

The LiTime 12V 100Ah TM LiFePO4 battery is a solid choice for those seeking a reliable deep-cycle battery for trolling motors, marine use, or even home energy applications. One of its main strengths is the built-in 100A BMS (Battery Management System) which offers robust protection against various issues like overcharging and overheating, making it safe to use even in low temperatures. With a cycle life boasting up to 15,000 cycles at reduced depths of discharge, it significantly outlasts traditional lead-acid batteries, which typically last only a few years. This durability translates into long-term cost savings for users, making it a worthy investment for serious boaters and outdoor enthusiasts.

The battery is designed specifically for harsh marine environments, with extra protection against water and dust. Its compact design also allows for easy installation in tight spaces, which is a plus for boaters. Moreover, the option to expand the system allows for higher capacity builds, accommodating various power needs.

There are a few drawbacks to consider. The battery weighs about 46 pounds, which may be heavier than some users expect, making it a bit cumbersome to handle. Additionally, while the price point is competitive when looking at performance over time, the upfront cost of lithium batteries can be higher than traditional lead-acid options, which might deter budget-conscious buyers.

The battery comes with a 5-year warranty and good customer service, and users should be aware that the technology requires some understanding for optimal use, especially when integrating with existing systems. This battery is best suited for serious trolling motor users, boaters, and those looking for a dependable marine battery with long-lasting performance.

The LiTime 12V 100Ah Group 24 Bluetooth LiFePO4 Battery stands out as a robust and efficient deep-cycle battery ideal for trolling motors. It boasts a high capacity of 100Ah and operates at 12V, which is standard for such applications. One of its major strengths is its impressive cycle life, capable of up to 15,000 cycles, significantly outlasting traditional lead-acid batteries. Additionally, it is much lighter, weighing only 21.9 lbs, making it easier to handle and install. The built-in Bluetooth functionality is a modern touch, allowing real-time battery monitoring through a dedicated app, which can be very convenient for users who want to keep an eye on battery performance and health without hassle.

The smart BMS (Battery Management System) ensures safety by protecting against over-charging, over-discharging, over-current, and short-circuits, and includes a low-temperature cut-off feature for safe operation in various environments. Another advantage is its universal fit, conforming to the BCI Group 24 size standard, making it compatible with a wide range of vehicles and applications without requiring significant modifications. However, there are some limitations. The battery is not suitable for use as a starting battery, in golf carts, or jacks, which might limit its versatility for some users. Additionally, to activate the Bluetooth function, an initial charge with a lithium-activation charger or MPPT charger is necessary, which may add a step for users new to this technology.

Despite these minor drawbacks, the LiTime battery's performance, extended cycle life, and advanced features make it a strong contender for anyone looking to upgrade their trolling motor's power source. The 5-year warranty and strong customer support further enhance its appeal.

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.