1500 CCA 300AH Dual Purpose Cranking Lithium – Bluetooth "Sea Lion"

Unmatched Power. Ultimate Reliability. Compact Size.

The Sea Lion is our most compact, energy-dense dual-purpose lithium battery ever. Designed for serious offshore and tournament anglers, it delivers an industry-leading 1500 Cold Cranking Amps (CCA) and an impressive 300Ah of capacity, making it a top-tier choice for starting your engine and powering your entire electronics setup—all from one battery.

Tested. Proven. Trusted.

A question we’re asked often is: “Will it work with my engine?”
The answer is yes—without a doubt.

We’ve personally tested this battery over years on boats owned by family, friends, and tournament pros. After over a year of real-world use, it has consistently delivered dependable performance across a wide range of engines, including:

• Mercury Pro XS 4-Stroke & 2-Stroke

• Yamaha 4-Stroke & SHO (both old and new models)

• Yamaha HPDI

• Mercury Verado 4-Stroke

• Suzuki 4-Stroke

• Evinrude 2-Stroke

• Mercruiser 4-Stroke

Built for Demanding Marine Systems

From high-draw electronics to cranking power-hungry outboards, the Sea Lion handles it all:

• 1500 CCA for confident starts in any weather

• 300Ah capacity for extended runtime

• Advanced BMS (Battery Management System) for safety, stability, and performance

• Bluetooth Monitoring via iOS & Android app for real-time status updates

• Grade A LiFePO4 Cells for maximum longevity and cycle life

Perfect For Power-Heavy Setups

Whether you're running:

• 6 to 10 Graphs

• Mega 360

• Multiple Livescopes

• Shallow Water Anchors

• Bait Tanks

• Pumps

• Marine Lighting Systems

...this battery can handle all of it with ease.

Installation & Compatibility

• Group 31 case – Drop-in ready

• Plug-and-play wiring

• Connect up to 4 in series for 24V, 36V, or 48V systems

• Parallel capable for even more capacity

• Compatible with all AGM-mode chargers including:

  • Minn Kota (Precision & Digital)

  • Dual Pro

  • NOCO

  • Real Pro

  • Pro Sport

All chargers must have AGM charging capability.

Specification

Weight

56 lbs 

CCA

1500 cold cranking amps

Size Dimensions

L 13.5 in (343mm) x W 7.25in (184mm)  x H 9.75 in (247mm)

Voltage

12.8V

Energy

3840 Watts (Wh)

Amp-Hours

300Ah 

Charge Volts

14.4-14.6v

Continuous Amps

300A max

Terminals

Top Post & M8