The Best Batteries for Small Boats and Kayaks: Deep Cycle 12V LiFePO4

Quick Answer

These LiFePO4 (or LFP) batteries are the best batteries you can buy to run small boats and watercraft such as kayaks:

• WEIZE 12V LiFePO4 Battery — 100Ah — $319 (Amazon Prime)
• LOSSIGY 12V LiFePO4 Battery — 200Ah — $619
• WEIZE 12V LiFePO4 Battery — 200Ah — $629
• LPFMax 12V LiFePO4 Battery — 300Ah — $1009
• LiTime 12V LiFePO4 Battery — 300Ah — $1039
• Enjoybot 12V LiFePO4 Battery — 300Ah– IP65 Waterproof — $899

For reference, I can run a platform party boat (12′ by 12′) around a lake using a 100Ah WEIZE 12V LiFePO4 Battery and a Newport NV-Series Electric Trolling Motor. I get about an hour of run time on the lake using this battery.

More Details About LiFePO4 Batteries

There are several advantages of using LiFePO4 batteries for boats:

1. Lightweight: LiFePO4 batteries are much lighter than traditional lead-acid batteries. This makes them easier to handle and can help reduce the boat’s overall weight, improving fuel efficiency and speed.
2. High energy density: LiFePO4 batteries have a high energy density, which means they can store more energy in a smaller space. This makes them ideal for boats where space is at a premium.
3. Long lifespan: LiFePO4 batteries have a longer lifespan than traditional lead-acid batteries. Depending on usage and maintenance, they can last up to 10 years or more.
4. Fast charging: LiFePO4 batteries can be charged much faster than traditional lead-acid batteries.
5. Safe: LiFePO4 batteries are considered safer than other lithium-ion batteries because they are less prone to overheating and are less likely to catch fire.
6. Maintenance-free: LiFePO4 batteries require little to no maintenance, unlike traditional lead-acid batteries, which require regular topping up with distilled water and checking of electrolyte levels.