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

The LiTime 2 Pack 12V 100Ah Trolling Motors Lithium Battery is designed with the latest technology to meet the needs of trolling motor users. It's a Lithium Iron Phosphate (LiFePO4) battery, which is known for its longer cycle life and higher safety compared to lead-acid batteries. The capacity of 100Ah and voltage of 12V make it a robust choice for sustained energy needs, ideal for marine and boat applications.

The Bluetooth 5.0 feature allows real-time monitoring, which is highly convenient for users to keep track of battery health and performance. Additionally, the battery is expandable for broader applications, supporting up to 4 in series and 4 in parallel, which means it can be used in RVs and home energy storage systems as well, making it versatile beyond marine usage. One of its standout features is the low-temp cut-off function, ensuring safe operation in cold environments, which is perfect for harsh conditions.

The battery is relatively lightweight at 22.2 lbs, easing the burden on the boat and enhancing maneuverability. It also has a high cycle life of 4000+ deep cycles at 100% Depth of Discharge (DOD), promising longevity and reliability. However, the battery is not suitable for use as starting batteries or golf cart batteries, and special chargers are required to activate the Bluetooth function. Maintenance is user-friendly thanks to integrated protection features, but users need to be cautious during transportation as the battery is shipped in a single package which might cause delays in receiving the complete set. This battery appears well-suited for marine applications, RVs, and home energy solutions requiring stable and long-lasting power.

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 Battle Born 100Ah 12V Lithium-Ion (LiFePO4) battery is an excellent choice for deep-cycle applications like trolling motors due to its high capacity and reliable performance. It features a lithium iron phosphate chemistry, which is known for its safety and long life. With a capacity of 100Ah, it offers substantial power and can be wired in series or parallel, increasing its versatility for different setups. The internal Battery Management System (BMS) provides protections against low temperatures, high and low voltage, and short circuits, enhancing safety and battery life.

One of its standout features is the impressive cycle life of 3,000-5,000 cycles, translating to about 10-15 years of use, making it a cost-effective investment in the long run. Additionally, at just 31 pounds, it is lightweight compared to traditional lead-acid batteries, making it easier to handle and install. However, it is important to note that lithium batteries typically come at a higher upfront cost than other types, which might be a consideration for budget-conscious users.

Furthermore, while it is designed to be a drop-in replacement for Group 27 & 31 batteries, ensuring compatibility with your specific setup is essential. Maintenance-wise, lithium batteries are generally low-maintenance, which is a significant advantage. This battery is particularly well-suited for users seeking a durable, long-lasting, and lightweight power solution for their trolling motors, RVs, boats, or off-grid applications.