The ABYSS® 12V 350Ah Dual-Purpose 8D Marine Lithium Battery is a high capacity performance Lithium-ion battery engineered with the strongest 200A BMS rating of its class. This battery is equipped with built in Bluetooth® connection and ideal for off-grid living, energy storage applications, starting generators, and large outboard or diesel motors. Designed for powering Seakeeper systems, chill plates, microwaves, and A/C. This battery is a power house you can depend on. 

The module's inherent safety, extended cell life, and zero maintenance offers end users a more reliable battery alternative by performing with more than twice the run-time and <70% of the weight of similarly sized AGM batteries. Our integrated Battery Management System is designed to operate seamlessly with any application and manages all of the modules system parameters in real-time.

• UL1642, IEC62619, IEC62133 listed with Cycle life more than 3000 times and excellent consistency.

• Monitor the battery status (charge, discharge, current, temperature, cycle life and so on) and change the data for different applications.

Push Button Wake-Up/Reset Feature 🔄

• Located Conveniently on top of the battery case, this button allows for easy waking up or resetting of the battery, ensuring quick and effortless operation.

Built-in Heating ♨️

• Uniform internal heating is an important feature of our cold-weather performance batteries, as many external heating blanket options currently available cannot sense the internal temperature of the cells and may not be completely effective at heating the battery throughout. Our system features proprietary technology that draws power from the charger itself, requiring no additional components. The entire process of heating and charging is completely seamless. Simply plug the battery into our lithium charger and the internal heating and monitoring system takes care of the rest.

Abyss Battery® strives to make the safest and most reliable lithium iron phosphate batteries for the most demanding environments, that’s why our batteries are only made with certified components and used in applications around the world. All Abyss Lithium batteries conform to the standard entities and regulations listed below. 

All Abyss Batteries meet and exceed The American Boat & Yacht Council (ABYC) standard for lithium ion batteries. The ABYC council is an organization that develops voluntary global safety standards for the design, construction, maintenance, and repair of recreational boats.

Abyss Battery®, Inc manufacturing process is compliant and licensed on a international level by TÜV Rheinland for Functional Safety as a result of exposure to harsh marine environments such as vibration, impact, ignition protection, water ingress and salt spray corrosion common on pleasure craft and boats. TÜV Rheinland stands for safety and quality in virtually all areas of business and life. TÜV Rheinland’s highly qualified experts test technical systems and products around the world, support innovations in technology and business, train people in numerous professions and certify management systems according to international standards. In doing so, the independent experts generate trust in products as well as processes across global value-adding chains and the flow of commodities. Since 2006, TÜV Rheinland has been a member of the United Nations Global Compact to promote sustainability and combat corruption.

UN/DOT 38.3: Lithium Battery Transportation

All Abyss Battery®, Inc. Lithium Batteries are required to pass section 38.3 of the UN Manual of Tests and Criteria, to ensure the safety of using products for our end users and for shipping purposes. We are proud of our investment to ensure our products have been UN38.3 certified.

T1 – Altitude Simulation
This is low pressure testing that simulates unpressurized airplane space (cargo area) at 15,000 meter altitude. After storing batteries at 11.6kPa for >6 hours, these criteria shall be met: no mass loss, leaking, venting, disassembly, rupture or fire, and voltage within 10% of pre-test voltage.

T2 – Thermal Test
This test covers changes in temperature extremes from -40°C to +75°C.  Batteries are stored for 6 hours at -40°C (12 hours for large cells/batteries), then 6 hours at +75°C (12 hours for large cells/batteries), for a total of 10 cycles. Testing may be performed in a single chamber or thermal shock chamber, but less than 30-minute transitions shall be used. 

T3 – Vibration
This test simulates vibration during transportation.  Test is a Sine Sweep: 7Hz – 200Hz – 7Hz in 15 Minutes; 12 Sweeps (3 hours); 3 mutually perpendicular axes. 

T4 – Shock
This test also simulates vibration during transportation.  Test is a Half-Sine pulse: 150G/6ms for small cells/batteries; 50G/11ms for large cells/batteries; 3 pulses per direction; 6 directions (+/-z, +/-x, +/-y).  Same pass criteria as T1.

T5 – External Short Circuit
This test simulates an external short to the terminals of the cell or battery. At temperature of +55°C, apply short circuit (<0.1ohm) across terminals.  Maintain at least an hour after sample temperature returns to +55 +/-2°C.  Pass criteria are: Case temperature does not exceed +170°C and no disassembly, rupture, or fire within 6 hours of test.  Fuse, current limiting circuit, and venting mechanism activation are allowable.

T6 – Impact
This test is only applicable to primary and secondary cells.  For cylindrical cells >20mm diameter, it simulates impact to case of cell. For cylindrical cells <20mm diameter and all other cell constructions, it simulates crushing of a cell. Pass criteria for any type is: Case temperature does not exceed +170°C & no disassembly or fire within 6 hours of test.

T7 – Overcharge
This test is for secondary or rechargeable batteries only.  It simulates an overcharge condition on a rechargeable battery: 2x the manufacturer’s recommended charge current for 24 hours.  Then battery shall be monitored for 7 days for fire or disassembly.

T8 – Forced Discharge
This testing simulates a forced discharge condition for primary and secondary cells only.

Click the links below to view and download owner's manuals and instructions for your Abyss Battery® products.

ABYSS BATTERY® USER MANUAL

LITHIUM CHARGER USER MANUAL

DC-DC CHARGER USER MANUAL

MULTI_BANK CHARGER USER MANUAL

REEL BATTERY USER MANUAL

BLUETOOTH® APP QUICK GUIDE

Thank you for taking interest in the products we offer at Abyss Battery. This Limited Warranty applies to physical goods, and only physical goods purchased from Abyss Battery. We recommend you protect your investment and register your warranty.

If your battery is not registered within 90 days of purchase, warranty will begin at manufacture date of battery. Proof of ownership is required. Warranties are not transferrable. Unlike other Lithium battery companies, Abyss Battery has additional support through the purchase of our Extended Warranty program.

Warranty types: 12V, 24V, 36V, 72V Batteries

Warranty types: Reel Batteries, Lithium Battery Chargers

One stop for support

• 24/7 priority access to Battery experts by chat or phone
• Global repair coverage
• Onsite repair for Batteries: Request that a technician come to your work site
• Mail-in repair: Mail in your Battery using a prepaid shipping box provided by Abyss Battery
• Carry-in repair: Bring your Battery in to our Authorized Service Providers

How to Buy?

1. Purchase ReCharge+ for $199.99 with your New Battery (does not apply to reel batteries or chargers.)
2. Or buy it within 60 days of your Battery purchase:

• Online: Add extended warranty to your shopping cart when you checkout.
• By calling: 1+ (855)-719-1727

What does Limited Warranty cover?

We guarantee that every battery sold by us or any of our authorized dealers and OEM distributors, to be defect free from the date of purchase. Our Li-ion Batteries are designed to be a drop-in replacement for lead-acid and AGM battery applications. This Limited Warranty covers any defects in materials and workmanship under normal use during the Warranty Period. During the Warranty Period Abyss Battery will repair or replace, at no charge, products or parts of a product that proves defective because of improper workmanship, under normal use and maintenance.

What will we do to correct  the problems?

In the unlikely event your battery is defective, we will repair or replace the battery. If the battery is repairable, it will be repaired at no cost and returned to you. If it is not repairable and the issue was caused by a manufacturer defect, we will replace the battery at no cost within the first 5 years. After 5 years, we will repair your battery at no cost to you if the battery is repairable. In the unlikely event it is not repairable, we will prorate the cost of a new replacement battery for you at 35% off the cost of a new one.

In some cases, your warranty claim may require special order parts and it can take about 2 weeks for us to get the necessary parts and components. If a customer requests a replacement battery right away, the customer will temporarily pay for a replacement and a credit will be issued once the warranted battery is received and found to be defective or in need of repair.

How long does the Warranty Last?

• The Warranty period for physical goods purchased from Abyss Battery is 3,650 days (10 years). 
• A replacement battery assumes the remaining warranty of the original battery or 10 years from the date of purchase. 

What does this Limited Warranty not cover?

This Limited Warranty does not cover any problem that is caused by: