Epoch 300Ah Lithium Battery "Essential Series" (12-Volt)

Epoch 12V 300Ah Heated Bluetooth LiFePO4 Battery

High-capacity lithium power for serious off-grid electrical systems.

The Epoch 12V 300Ah Heated Bluetooth LiFePO4 Battery delivers massive energy storage in a single battery, making it an excellent choice for camper vans, RVs, boats, and off-grid power systems that need reliable, high-capacity lithium power.

With 300Ah of capacity (3.84kWh of energy), this battery can power large electrical systems including inverter loads, induction cooking, work-from-van setups, and extended off-grid stays. Lithium iron phosphate (LiFePO4) chemistry provides consistent voltage, fast charging, and thousands of cycles—dramatically outperforming traditional lead-acid batteries in lifespan and usable energy. 

Built-in internal heating, Bluetooth monitoring, and a smart battery management system (BMS) ensure the battery performs reliably across a wide range of temperatures and operating conditions.

Massive Capacity in a Single Battery

A single Epoch 300Ah battery stores 3.84 kWh of energy, equivalent to roughly three standard 100Ah lithium batteries. This makes it a great solution for builds where you want large capacity without wiring multiple smaller batteries together.

Fewer batteries means:

• Simpler wiring

• Reduced installation complexity

• More usable storage space in your van or RV

The battery can also be expanded into larger systems if needed.

Built for Cold Weather Charging

Charging lithium batteries in freezing temperatures can damage the cells. The Epoch Essential Series solves this with a built-in internal heater that warms the battery before charging begins.

This allows the battery to safely charge in cold environments, making it ideal for winter camping, ski trips, and shoulder-season travel.

Charge temperature range with heating: -4°F to 131°F (-20°C to 55°C)

Real-Time Monitoring with Bluetooth

The integrated Bluetooth module connects to the Epoch mobile app, allowing you to monitor your battery directly from your phone.

The app provides real-time information including:

• State of charge

• Voltage

• Current draw

• Battery temperature

• System alerts

This visibility makes it easier to manage power usage and troubleshoot electrical systems while traveling off-grid.

Advanced Battery Management System (BMS)

The integrated smart BMS protects the battery and connected equipment from electrical faults, including:

• Over-charge protection

• Over-discharge protection

• Over-current protection

• Short circuit protection

• High and low temperature disconnects

These protections help maximize battery lifespan and ensure safe operation in demanding environments.

Expandable Power System

The Epoch 300Ah battery supports both series and parallel configurations, allowing you to scale your electrical system as your needs grow.

• Up to 4 batteries in series (48V systems)

• Up to 4 batteries in parallel (1,200Ah capacity)

This flexibility makes it suitable for large van builds, RV electrical systems, marine applications, and off-grid solar installations.

Why builders upgrade to lithium

• More usable capacity than lead-acid

• Faster charging from alternator or solar

• Dramatically longer lifespan

• Lower weight for mobile electrical systems

Key Features

• 300Ah lithium capacity (3.84kWh energy storage)

• Integrated internal heating system for cold-weather charging

• Bluetooth monitoring with smartphone app

• Smart Battery Management System (BMS)

• Long lifespan with 4,000+ cycles

• Series and parallel expandable system design

• Maintenance-free lithium battery technology

• Designed for deep-cycle off-grid power systems

Technical Specifications

Battery Chemistry
Lithium Iron Phosphate (LiFePO4)

Cell Configuration
4S1P

Nominal Voltage
12.8V

Capacity
300Ah

Energy Storage
3.84 kWh

Maximum Continuous Discharge Current
200A

Maximum Charge Current
200A

Peak Discharge Current
400A (3 seconds)

Max Charge Voltage
14.6V

Operating Voltage Range
10.0V – 14.6V

Charge Temperature Range (with heating)
-4°F – 131°F (-20°C – 55°C)

Discharge Temperature Range
-4°F – 140°F (-20°C – 60°C)

Storage Temperature
32°F – 95°F (0°C – 35°C)

Weight
58 lbs

Length
13.75" (base) / 15.5" (including handles)

Width
7.63"

Height
10.0" (10.5" including terminal bolts)

Recommended Charge Settings

Maximum Continuous Charge Current
200A

Bulk / Absorption Voltage
14.2V – 14.6V

Float Voltage
13.4V – 13.8V

Equalization
Disabled

Temperature Compensation
Disabled

Battery Charge Temperature Range
32°F – 131°F (0°C – 55°C)

Battery Discharge Temperature Range
-4°F – 140°F (-20°C – 60°C)

• Spec Sheet
• Data sheet
• User Manual

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