A deep-cycle is primarily used for maritime activities because trolling motor battery of its capabilities. When looking into deep-cycle marine batteries, consider lithium marine batteries first, then AGM batteries, and SLA wet cell batteries last. Second are the absorbent glass mat or AGM batteries, which is an updated version of lead acid.
50ah Deep Cycle Heavy-duty Marine Battery, Lightweight & Sealed Agm, Trolling Motor Compatible
Because lithium batteries have a lifespan of 3000 cycles and more, you won’t have to worry about replacing them anytime soon. The recommended charging current for lead-acid batteries is 10-30% of the rated capacity. For example, you shouldn’t fast charge a 100Ah lead-acid battery with more than 30 Amps. A lower voltage means the motor will draw more amps to provide the needed power. On the other hand, lithium batteries will only have around a 3% voltage drop as they are discharged.
Our Top 10 Best Trolling Motor Batteries
The lead plates in this battery are thicker than most internally. This provides deeper cycle AGM work for longer trolling motor usage. You don’t have to worry about spillage or overpressure with this battery, as it is maintenance-free. At just 21.2 lbs, the battery is the lightest and most compact Group 24 trolling motor battery available, offering portability without sacrificing power. With an IP65 rating, this battery is resistant to moisture, dust, and salt water, making it perfect for both marine and outdoor use. The BMS offers full protection against overcharge, over-discharge, overcurrent, overheat, and short circuits, ensuring safe and reliable operation.
Trolling Motor Batteries
The electrolyte suspension system absorbs electrolytes without contaminants for pure power transfer. Heavy-duty, tin-alloy cells improve performance in floating or cyclical charging. Before putting on charge, always check the level of the electrolytes and that they are below the level of the splash barrel of the split ring. If the water levels in the battery are low, top them up using either distilled or deionized water only.
That’s because the size of the battery depends on where you are going to use it. AGM batteries can be big and bulky, especially those with a large charging capacity. If you aren’t permanently installing the batter onto your boat, then it’s a good idea to store it in a cool, dark location. Think of your garage or in the basement, although be mindful of keeping it anywhere too warm – just below room temperature is ideal. We’ve mentioned how certain batteries have the same specifications but one can outperform the other due to superior manufacturing and the VMAX MR127 is the perfect example of this.
Prioritize batteries with built-in Battery Management Systems (BMS) for safety and marine certifications like IP67 for water resistance. The AGM is placed between the specially formulated plates inside the battery and absorbs the electrolytes creating a safe and spill free battery. This battery is designed to provide up to 4 hours power for a 40 lb motor and up to 9 hours power for an 18 lb motor. It is built with heavy duty lead tin alloys to ensure high performance and extended service life, even after repeated discharges.