ABYSS® 36V 75Ah Lithium Trolling Motor Battery
AB-36V75-BT
- Inventory on the way
ABYC® Compliant
5-year free replacement warranty
IP67 Waterproof Rating
UN/DOT 38.3 Hazmat Approved
When you’re miles offshore, tucked deep in the backcountry, or battling wind and current all day, the last thing you should be worried about is your trolling motor battery.
The ABYSS® 36V 75Ah Lithium Trolling Motor Battery is engineered for anglers who demand maximum performance, extended runtime, and unwavering reliability on the water. Delivering 2.88kWh of usable energy, this premium lithium battery provides the power needed to confidently fish from sunrise to sunset and beyond.
Designed in a compact Group 49 form factor, the ABYSS® 36V 75Ah replaces three traditional 12V AGM or lead-acid batteries connected in series, reducing weight, freeing valuable storage space, and simplifying your electrical system.
Built with premium Lithium Iron Phosphate (LiFePO4) cells and an advanced Battery Management System (BMS), the battery delivers consistent voltage, superior cycle life, and dependable power throughout the discharge cycle. Whether you’re holding a spot in heavy current, navigating rough conditions, or making long trolling runs, you’ll have the power reserve needed to stay focused on fishing—not battery management.
Ideal for center console boats, bay boats, and offshore fishing platforms, the ABYSS® 36V 75Ah is designed to thrive in demanding marine environments and provide reliable performance season after season.
Key Features
• 36V 75Ah Capacity (2.88kWh)
• Compact Group 49 Form Factor
• Replaces Three 12V AGM or Lead-Acid Batteries
• Premium LiFePO4 Cell Technology
• Advanced Internal Battery Management System (BMS)
• Lightweight and Space-Saving Design
• Long Cycle Life and Maintenance-Free Operation
• Stable Voltage for Maximum Trolling Motor Performance
• Designed for Harsh Marine Environments
• Ideal for Offshore, Inshore, and Freshwater Applications
Ideal Applications
• 36V Trolling Motor Systems
• Center Console Boats
• Bay Boats
• Bass Boats
• Offshore Fishing Boats
• Tournament Fishing Applications
Power your next adventure with confidence. The ABYSS® 36V 75Ah Lithium Trolling Motor Battery delivers the runtime, reliability, and performance serious anglers demand when every cast matters.
36V 75Ah Battery Datasheet
| Technical Specifications | Details |
| Nominal Voltage | 38.4V |
| Nominal Capacity | 75Ah |
| Parallel Connection | Maximum 4 units |
| Series Connection | No |
| Bluetooth Management System (BMS) | 12S 100A (Available on Android/iOS) |
| Charge Voltage | 43.2±0.6 |
| Standard Charge Current | 30A |
| Fast Charge Current | 100A |
| Max. Continuous Discharge Current | 100A |
| Peak Discharge Current | 200A (10s) |
| Discharge Cut-off Voltage | 30V |
| Cycle Life | 4000 cycles @ 95% Depth of Discharge (DOD) and 6000 cycles @ 80% DOD |
| Self Discharge Rate | Less than 3% per month |
| Charge Efficiency | 100% @0.2C |
| Discharge Efficiency | 98-100% @1C |
| Operating Charge Temperature Range | -20°C to 55°C (-4°F to 131°F) |
| Operating Discharge Temperature Range | -20°C to 60°C (-4°F to 140°F) |
| Storage Temperature Range | 0°C to 45°C (32°F to 113°F) |
Physical Specifications
- Dimensions: 19.10" x 6.70" x 9.45" in
- 485×170×240mm (Group 49)
- Approximate Weight: 43.06 lbs (19.53 Kg)
- Terminal Type: M8
- Case Color/Material: Black Plastic case (ABS)
- IP Rating: IP67
- Cell Type: Cylindrical LiFePO4 (EVE 15Ah UL Cell)
- Cell Holder: Yes
Additional Information
- The battery features Bluetooth connectivity, allowing for monitoring via Android and iOS devices.
- Compliant with international standards including UL 1642, IEC62133, IEC62619, CE, UN38.3, and ROHS.
- Implemented strict quality control measures ensure reliability and consistency.
Higher qualified Grade-A cylindrical cells 🔋
UL1642, IEC62619, IEC62133 listed with Cycle life more than 3000 times and excellent consistency.
Bluetooth® Connectivity 📲
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.
More stable and firm internal structure ⚙️
The cell holders within our battery protect and separate each cell to avoid any short circuit risks caused by intense vibration or impact. The separation and space created between each cell also improves the overall heat dissipation within the battery pack while charging and discharging.
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.
ISO 14001:2004 Environmental Management System
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.
MULTI BANK CHARGER USER MANUAL
A B Y S S B A T T E R Y ® · M A R I N E L I T H I U M
10-Year Transferable Premium Warranty
Effective August 1, 2026. Applies to purchases made on/after the effective date; prior purchases remain covered under warranty terms in effect at time of purchase.
0 1 —WARRANTY OVERVIEW
Abyss Battery, Inc. (“Abyss”) warrants its marine lithium batteries to be free from defects in materials and workmanship for a period of ten (10) years from the original date of purchase. If an Abyss battery fails due to a defect in materials or workmanship during the warranty period, Abyss will, at its sole discretion, repair the battery or replace it with a new or equivalent current-production model. This warranty is fully transferable to subsequent owners upon registration, subject to the conditions in Section 04.
PRODUCT COVERAGE TERM COVERAGE
* Marine lithium batteries (12V, 24V, 36V, 48V, 72V) - 10 years from original purchase: Repair or replacement for manufacturing defects, at Abyss’s option.
* Reel batteries & chargers 2-year replacement, then 35% off through year 5 for manufacturing defects.
0 2 — WHAT IS COVERED
* Defects in materials or workmanship that occur during normal, intended marine use.
* Repair of the affected battery, or replacement with a new or equivalent current-production model, at Abyss’s sole discretion.
* If the original model has been discontinued, Abyss will replace it with the current equivalent model of comparable voltage, capacity, and specification.
* A repaired or replacement battery assumes the remaining warranty term of the original battery.
* 24/7 priority phone and chat support with Abyss battery experts.
0 3 — ACTIVATION: REGISTRATION
* Registration is required for 10-year coverage. Register within 90 days of purchase at abyssbattery.com or through the Abyss Battery App, with proof of purchase and battery serial number.
* Unregistered batteries with an original purchase receipt remain covered under the standard Abyss 5-Year warranty plan.
* Batteries that are not registered and have no proof of purchase carry no warranty coverage.
* For batteries with connected features, keeping firmware reasonably up to date through the Abyss Battery App is a condition of coverage for firmware-related failures.
0 4 — TRANSFERABILITY
*This warranty transfers to a subsequent owner — including when the battery is sold with a boat — provided that:
- The transfer is registered online within 30 days of the sale;
- The new owner provides the battery serial number; and
- The original proof of purchase (or existing registration) is on file.
* There is no transfer fee. The warranty term is not extended by transfer; the new owner receives the balance of the
original 10-year term.
0 5 — EXCLUSIONS: WHAT IS NOT COVERED
*Damage from abuse, misuse, neglect, collision, fire, or submersion.
* Improper installation, improper charging, or use of charging equipment that does not fall within the specifications of a lithium charge profile or is not equipped with pulse wake up mode.
*Unauthorized modification, disassembly, tampering, or repair by anyone other than Abyss or its authorized service providers.
* Environmental damage, including flooding, extreme heat, freezing, or salt-water intrusion beyond rated protection.
* Normal wear, gradual capacity degradation within published cycle-life specifications, and cosmetic damage that does not affect performance.
* Loose or corroded terminals; jump-starting damage.
* Labor, removal, reinstallation, loss of use, towing, or other incidental costs.
* Batteries used in applications outside their published specifications, including non-marine commercial use.
0 6 — CLAIMS: HOW TO MAKE A CLAIM
* Contact Abyss support (phone, chat, or warranty@abyssbattery.com) with the serial number, proof of purchase or registration, and a description of the issue.
* Abyss will troubleshoot remotely first; many issues are resolved with firmware, charging, or configuration guidance.
* If a return is required, Abyss will issue an RMA with hazmat-compliant shipping instructions. Batteries must ship in original or hazmat-certified packaging via approved carriers.
* If a manufacturing defect is confirmed, Abyss covers return and replacement shipping. If no defect is found, the customer is responsible for shipping.
* Customers may optionally purchase a replacement up front to minimize downtime; a full credit is issued upon defect verification.
0 7 — TERMS & LIMITATIONS
This warranty applies under conditions of normal use. To the maximum extent permitted by law, Abyss disclaims all implied warranties beyond this written limited warranty and is not liable for incidental or consequential damages. Some states do not allow limitations on implied warranties or the exclusion of incidental or consequential damages, so these limitations may not apply to you. This warranty gives you specific legal rights; you may also have other rights that vary by state.
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