Epoch Batteries 12v - 120ah PRO SERIES Marine / RV Lithium Battery (Duel Purpose)

Epoch 12V 120Ah PRO Series: Built for Marine and RV Power

The Epoch Batteries 12V 120Ah PRO SERIES is a compact energy solution for owners who need dependable starting power and strong onboard storage in one package. As a marine lithium battery using LiFePO4 chemistry, it is engineered for fast response, consistent voltage, and efficient power delivery in demanding environments.

This dual purpose battery is a practical fit for boats, campers, and off-grid setups that need one battery to support engine starts, electronics, and everyday house loads. Smart monitoring, sealed construction, and cold-weather support make it a versatile upgrade for modern electrical systems.

Brand and Support Details

• Brand: Epoch Batteries
• Founded: 2022
• Headquarters: 164 Andrew Dr., Stockbridge, GA 30281
• Phone: (888) 501-1846
• Website: www.epochbatteries.com
• Company profile video: Watch the company profile
• Owner: Not publicly disclosed

Smart Battery Monitoring Features

• Bluetooth monitoring: Yes
• Mobile app access: Yes
• CAN communication: Yes
• Self-heating: Yes
• OEM display integration: N/A
• Owner's manual: Not provided

Charging Settings for Long-Term Lithium Performance

To keep this 12V 120Ah battery operating at its best, use chargers and regulators that are programmed for lithium chemistry. That includes shore power chargers, inverter chargers, solar charge controllers, alternator regulators, and DC-to-DC equipment with LiFePO4 profiles.

• Bulk / absorption: 14.2V to 14.6V
• Float: 13.4V to 13.8V
• Equalization: Disabled
• Temperature compensation: Disabled
• Recommended charge rate: Up to 50% of battery or bank capacity
• Charge temperature range: 32°F to 131°F
• Discharge temperature range: -4°F to 140°F

If your charger has preset modes, confirm that the output matches these values. Lead-acid equalization settings should remain off, since they are not suitable for a lithium cranking battery.

Performance Specs That Matter on the Water or Road

For owners who want a strong start-assist battery with useful storage capacity, this model delivers both. The lithium cranking battery design supports dependable engine starts, while the 120Ah rating provides energy for accessories, lights, pumps, and electronics.

• Voltage: 12.8V
• Capacity: 120Ah
• Stored energy: 1,536Wh
• Chemistry: LiFePO4
• Peak discharge: 800A (10s) / 600A (10s)
• Continuous discharge: 150A
• Cold-weather support: Self-heating enabled
• Parallel / series capability: 16 parallel / 4 series

Physical Build and Protection

• Dimensions: 12.125" L x 6.61" W x 8.31" H
• Weight: 27.56 lb
• Case material: Plastic shell
• Protection rating: IP67
• Terminal type: M8 / 8-12 N.m
• Self-discharge: 3% per month
• Recommended discharge temperature: -4°F to 140°F
• Charging temperature: 34°F to 140°F
• Product data sheet: Download the product data sheet

Why This RV Lithium Battery Is a Smart Upgrade

Compared with many lead-acid alternatives, this RV lithium battery is easier to carry, charges faster, and uses more of its rated capacity during real-world operation. That translates into better runtime without having to increase battery bank size.

The sealed enclosure helps reduce exposure to moisture and debris, while the self-heating function improves usability in cold conditions. For mixed-use systems that move between marine, travel, and campsite power demands, this dual purpose battery can simplify the whole setup.

Best Uses for This Battery

• Outboard engine starting
• Marine accessory power
• RV house battery systems
• Navigation and electronics support
• Recreational and off-grid storage

Installation Checklist for a 12V 120Ah Battery

Before installing this 12V 120Ah battery, confirm that cables, fuses, and charging hardware are rated for lithium operation. A properly configured system improves reliability and helps protect connected electronics.

• Check polarity: Verify positive and negative connections before powering up
• Use correct fusing: Size protection for the battery and load
• Set lithium charging profiles: Program compatible charger settings where available
• Leave access space: Keep room for inspections and service
• Plan for low temperatures: Allow the self-heating function to assist in cold weather

When building a multi-battery bank, confirm that the alternator, charger, or DC-to-DC system is approved for a marine lithium battery and matched to the correct voltage targets.

What Makes This Dual Purpose Battery Different

This model combines two roles that are often handled by separate batteries. It can support starting loads and also provide stable stored energy for house use, which makes it a practical dual purpose battery for compact installations.

Because lithium chemistry holds voltage more steadily under load, accessories tend to operate more consistently. That benefit is especially useful for modern marine electronics, RV appliances, and devices that need clean power throughout the day.

Quick Comparison Against Lead-Acid Options

• Weight: Lower than many comparable AGM or flooded batteries
• Usable capacity: More of the rated capacity can be put to work
• Recharge time: Typically faster with compatible charging gear
• Maintenance: Less routine attention than traditional batteries
• Cold-weather use: Self-heating expands seasonal flexibility

Warranty, Technical Help, and Documentation

Need assistance with setup or charging? Manufacturer support is available Monday through Friday, 9am to 5pm EST, through the official support channel.

www.epochbatteries.com/support

Warranty coverage: 11 years total, including 3 years at 100% and 9 years prorated.

www.epochbatteries.com/warranty

Installation Media

• Coming soon

FAQ: Epoch 12V 120Ah Marine and RV Battery

Order the Epoch PRO Series for Marine or RV Use

If you want a dependable marine lithium battery that also performs well as an RV lithium battery, this 12V 120Ah battery delivers strong starting support, smart monitoring, and efficient storage in one package. Review the specifications, confirm charger compatibility, and shop AwesomeBatteries.com for low pricing and free shipping.