Epoch Batteries 12.8v - 50ah Lithium Marine Battery

Compact LiFePO4 power for marine setups

The Epoch Batteries 12.8V 50Ah lithium marine battery is designed for boaters who want dependable energy in a smaller, lighter package. Its LiFePO4 construction supports stable deep-cycle output, efficient recharge cycles, and reliable operation for electronics, trolling motors, and onboard accessories.

If you are upgrading from heavier battery chemistry, this 12.8v battery offers a practical blend of portability, usable capacity, and low-maintenance performance. It is an excellent fit for anglers, weekend boaters, and anyone looking for a modern 50ah lithium battery with marine-ready durability.

Brand background, contact details, and product support

Epoch Batteries is a newer battery brand focused on advanced storage solutions for recreational and off-grid use.

• Brand: Epoch Batteries
• Business since: 2022
• Address: 164 Andrew Dr., Stockbridge, GA 30281
• Phone: (888) 501-1846
• Website: www.epochbatteries.com

View the company profile here: Epoch Batteries company profile.

For product questions, troubleshooting help, or warranty assistance, use the support page at www.epochbatteries.com/support. Phone support is available Monday through Friday from 9am to 5pm EST.

Bluetooth monitoring and system communication

This lithium marine battery is built to make power management easier on and off the water. Bluetooth access lets you review battery status from a mobile device, while CAN communication helps improve integration with compatible marine and energy systems.

• Bluetooth: Yes
• Mobile application: Yes
• CAN communication: Yes
• Owner's manual: No
• Self heating: No
• OEM display cluster integration: N/A

Why app-based monitoring is useful

Instead of opening a compartment to check the battery manually, you can review performance data in real time. That makes it simpler to track usage, confirm charge levels, and stay ahead of power issues during long days on the water.

Charging settings for a 12.8V lithium battery

To protect the battery and support consistent performance, use charging equipment that can be configured for lithium chemistry. Solar controllers, inverter chargers, DC-to-DC chargers, and converters should match the recommended voltage profile below.

• Bulk / absorption: 14.2V to 14.6V
• Float: 13.4V to 13.8V
• Equalization: 14.4V / disabled
• Temperature compensation: 0 / disabled
• Charge rate: Up to 50% of battery or bank capacity
• Charge temperature range: 32°F to 131°F (0°C to 55°C)
• Discharge temperature range: -4°F to 140°F (-20°C to 60°C)

Setup tip: If your charger does not offer a dedicated lithium profile, confirm that the voltage values can be set manually and that equalization is turned off before first use.

Pre-installation checklist

• Verify charger compatibility: Make sure your charger supports lithium settings.
• Measure the compartment: Confirm the 7.75" x 6.5" x 7" size fits your tray or enclosure.
• Check terminal hardware: Use the correct M8 Female connection and torque to 8-12 N.m.
• Confirm ambient conditions: Keep charging and storage within the recommended temperature range.
• Install proper protection: Use the right fuse or breaker for your marine wiring plan.

Technical specifications for deep-cycle marine use

This deep cycle marine battery combines compact dimensions with efficient energy storage, making it suitable for boats that need steady output without excess weight.

• Voltage: 12.8V
• Capacity: 50Ah
• Energy: 640Wh
• Cell type: LiFePO4 - 4S
• Voltage range: 10V to 14.6V
• Series / parallel: 4 in series | 4 in parallel
• Peak discharge current: 170A (3s)
• Continuous discharge current: 50A
• Recommended discharge temperature: -4°F to 140°F
• Charging temperature: 34°F to 140°F
• Dimensions: 7.75" x 6.5" x 7"
• Weight: 14.3 lb
• Case: Plastic shell
• Enclosure rating: IP54
• Terminal type: M8 Female / 8-12 N.m
• Self discharge: 3% per month

Data sheet: Download the product specification PDF

Where this marine battery performs best

For boat owners, switching to a lithium marine battery often means easier handling, faster charging, and more usable capacity than older lead-acid options. This epoch battery is especially appealing for smaller vessels, portable power needs, and seasonal use where storage space is limited.

• Lightweight build: Simplifies lifting, mounting, and removal
• Steady deep-cycle output: Supports trolling and repeated accessory use
• Low self-discharge: Helpful during off-season storage
• Compact footprint: Fits neatly into tighter battery compartments
• Reduced upkeep: A simpler experience than flooded lead-acid batteries

Ideal applications on the water

• Small boats and kayaks
• Trolling motor systems
• Fish finders and marine electronics
• Auxiliary power for onboard accessories
• Portable energy storage for short trips

How it compares with AGM and flooded batteries

Compared with traditional battery types, this 12.8V battery offers a cleaner balance of weight savings, usable power, and charging efficiency. It is a solid option for owners who want reliable output without the bulk and maintenance that often come with older battery systems.

In everyday use, a 50Ah lithium battery like this one can simplify power management, especially when paired with Bluetooth monitoring. If your current setup feels heavy, slow to recover after use, or inconvenient to maintain, this deep cycle marine battery is a practical upgrade path.

Purchase considerations before ordering

• Confirm system voltage: Ensure your setup is built around 12.8V.
• Review charger settings: Use programmable or lithium-ready charging equipment.
• Match your loads: Keep continuous draw within the battery rating.
• Plan storage strategy: Take advantage of the low self-discharge rate between outings.

Warranty coverage and long-term value

Epoch Batteries includes an 11-year warranty with 3 years at 100% coverage and 9 years prorated. That level of support adds peace of mind for buyers who want dependable performance from a marine power upgrade.

Review the full policy here: Warranty details.

Installation videos

• Coming soon

Frequently asked questions about this lithium marine battery

Is this model suitable for marine applications?

Yes. The Epoch Batteries 12.8V 50Ah lithium marine battery is well suited for marine and other deep-cycle uses where lightweight construction and dependable output matter.

Can I use solar charging with this battery?

Yes. Solar charging is supported as long as the controller can be programmed to the correct lithium voltage profile and unsupported functions are disabled.

What should I confirm before installation?

Check charger compatibility, compartment dimensions, terminal fitment, and temperature conditions before putting the battery into service.

Does Bluetooth monitoring make maintenance easier?

Yes. App-based monitoring can help you review data faster, spot issues earlier, and manage your power system with more confidence.

Upgrade your boat with efficient, lightweight power. Choose the Epoch Batteries 12.8V 50Ah lithium marine battery for dependable performance, simple monitoring, and strong value on the water. Order today from AwesomeBatteries.com and enjoy free shipping on every product.