Category Marine Batteries & Charging

What Is a Group 31 Battery? Specs, Size & Uses

Discover the specs, size, and uses of a Group 31 battery—you'll want to see how each type compares.

Getting the right marine battery type is crucial for your boat.

Discover the true Ah range of deep cycle batteries—and why your 100Ah battery might not deliver what you expect.

Compare battery group 24 vs 27 for a critical length difference that decides your runtime.

On average, charging a marine battery takes 4 to 12 hours, but your actual time can vary drastically.

Discover how to calculate trolling motor runtime with amp-hours and voltage, and why battery type doubles your time.

Batteries for deep cycle use cost more upfront, but lithium’s longer life saves you money each cycle.

I explain how three smart charging stages work, but not what stops overheating here.

Wondering what deep cycle marine batteries do differently? They power your boat’s gear—and here’s why choosing right matters.

How to pick a marine battery isn’t just about power; the real secret lies in matching your boat’s exact needs.