Durable · Reliable · High-Performance

For Serious Marine Power

Marine-grade lithium, founder-built, supported for life. Engineered for saltwater — not adapted from RV or solar.

Rated 5.0 out of 5
Powering Over 50,000 Pursuits
  • Trusted by OEMs & Professionals
  • Free Shipping
  • 10-Year Free Replacement Warranty
  • Designed in Florida
  • UL/IEC Certified

Shop Collections

TROLLING MOTOR system
DEEP-DROP & KITE
High Performance Starting
12V Lithium Powersport Batteries for Motorcycles, Jet Skis, ATVs & UTVs
Build Your Power System
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POWER YOUR PURSUIT™

ABYSS (Ē-bis) comes from the Greek word ABYSSOS

Meaning "Bottomless, Boundless, and Unfathomable". The immeasurable Depths of the Ocean are the world in which we are deeply rooted and from where we draw our name and inspiration. From the first engine start to holding your spot when the bite is on, ABYSS delivers lithium power for the way you fish. Find the right battery for your boat and the gear you depend on.

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The people who can't afford a shutdown run Abyss.

Testimonials

ABYSS 24V 60Ah Group 24 Bluetooth Lithium Marine Trolling Motor Battery OEM installation on a HellsBay Skiff
Rated 5.0 out of 5

Lightweight and reliable!

I absolutely love my Abyss Batteries. Lightweight and reliable! The phone app is incredible. You can check your battery life and all the functions, cells, and the life signs of the battery. I can now run a 24V trolling motor on my airboat and not have the weight factor anymore. Absolutely incredible!

Rated 5.0 out of 5

The only battery I trust offshore

Ran two full days of hard fishing 40 miles out and never thought about power once. These batteries just work, and knowing they're built for saltwater gives me total peace of mind. Worth every penny.

12-volt deep cycle lithium marine battery for trolling motors, starting, powering your boats electronics and more.
Rated 5.0 out of 5

Cut my rig weight in half

Swapped out four lead-acid batteries for a single Abyss and couldn't believe the difference. My boat sits better, runs faster, and I've got more range than ever. Should have done this years ago.

At Abyss Battery we pride ourselves with being hands on with our customers and being able to walk them through their system build
Rated 5.0 out of 5

Support that actually shows up

Had a question about wiring my system and got a real person on the phone in minutes. The team clearly knows their product and stood behind it. That kind of service is rare these days.

36V 60Ah Trolling Motor Battery on the bow of a 28ft Freeman Boat. Minn Kota Terrova 36V Trolling motor
Rated 5.0 out of 5

Three seasons, zero issues

Three seasons in and these batteries perform exactly like day one. No fade, no drama, just consistent power every single trip. The app makes it easy to keep an eye on everything too.

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Not sure which battery?

Find your battery in 60 seconds

Answer a few questions about your boat and we'll match the right battery.

Who We Are

Founder-Built. Supported for Life.

Abyss was founded in Largo, Florida by a tournament angler who grew up running boats out of Clearwater, and who'd spent over a decade in lithium before building his own line.

The problem was always the same: every marine battery worked fine until the moment it mattered. Abyss closes that gap.

Marine-only lithium, batteries and chargers engineered to run as one system, and the first built-in fire suppression in the category. Founder-built, salt-tested, supported for life.

Why Abyss?

  • Hardened for salt, vibration, and heat. IP-rated and real-condition tested.

  • Holds voltage flat from 100% to 20%. Backed by a 10-year replacement warranty on every unit.

  • 2× the power density of lead-acid. Charges faster and weighs half as much.

  • U.S.-based, founder-accessible support. Talk to the team that built it.

ABYSS BATTERY designed for impact resistance and hard saltwater fishing conditions.
ABYSS BATTERY designed for impact resistance and hard saltwater fishing conditions.

Learn from the Experts

Learn more about Buying Guide

Buying Guide

Pick the right battery

Learn more about Charging Tips

Charging Tips

Maximize cycle life

Learn more about Installation Gallery

Installation Gallery

See real builds

Prefer to buy local?

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