EPOCH 12V 300Ah (3.84kWh) Pro Series - LiFePO4 Cranking & Deep Cycle Lithium Battery (Dual Purpose)

12.8V 300Ah LiFePO4 Battery with Heat, Bluetooth, CANBUS, and Smart BMS

When your power system has real work to do, you need a battery that can deliver more than just decent numbers on paper. You need strong capacity, dependable output, cold-weather charging capability, and built-in protection that helps your system stay stable when conditions are less than perfect. This 12.8V 300Ah LiFePO4 battery is built for exactly that.

Designed for marine, RV, off-grid, and industrial power systems, this battery combines high-capacity lithium iron phosphate chemistry, 300Ah of storage, Bluetooth monitoring, CANBUS communication, and internal heating into one rugged, maintenance-free package. The result is a serious energy storage solution for people who need long runtime, strong current delivery, and day-in, day-out reliability.

With approximately 3.84kWh of stored energy, this battery gives you the kind of usable power that makes a real difference in the field. Whether you are running critical loads on an off-grid setup, extending your time off shore, powering an RV without constant generator noise, or building a scalable battery bank for demanding equipment, this unit is designed to help you do it with less hassle and more confidence.

Serious capacity for serious runtime

A 300Ah battery is not for light-duty use. It is for people who are tired of coming up short on runtime and tired of building systems around compromises.

This battery delivers 12.8V output and 300Ah capacity, making it a strong fit for applications where dependable energy storage matters. It supports up to 300A continuous discharge and 300A continuous charge current, with a peak discharge capability of 1,000A for 5 seconds. That means it can support high-demand loads and handle heavy bursts of power when your system needs it most.

For RV owners, that can mean longer time off-grid with fewer charging interruptions. For marine users, it means reliable house power with the strength to support demanding onboard systems. For off-grid users, it means a battery that can carry meaningful daily loads instead of just covering the basics.

Stable LiFePO4 performance you can trust

Lithium iron phosphate has become the go-to chemistry for high-quality energy storage for a reason. It offers strong cycle life, stable voltage, dependable thermal performance, and lower maintenance than older battery technologies.

This battery is built with LiFePO4 chemistry to provide consistent power delivery across a wide range of applications. It is designed for people who want a battery that feels dependable in real use, not one that constantly needs attention, equalizing, watering, or workarounds.

If you are upgrading from lead-acid, this is the kind of change you notice fast. Better usable capacity. Better charge efficiency. Less maintenance. Less voltage sag. More confidence when your system is actually being used hard.

Built-in Smart BMS protection

A battery is only as trustworthy as the protection system behind it. This model includes an integrated Battery Management System (BMS) designed to help protect against overcurrent, short circuits, and temperature extremes.

That matters because real systems are not always operated under perfect conditions. Loads spike. Temperatures change. Mistakes happen. A smart BMS helps protect the battery and supports more stable operation over the long term.

This battery also includes high and low temperature disconnect functionality, adding another layer of protection for applications that see changing weather, varying use patterns, or tough working environments.

Internal heating for cold-weather charging

Cold weather can create real problems for battery charging, especially in cabins, garages, marine installs, work trailers, and RVs used year-round. This battery addresses that with internal heating, allowing it to charge in low-temperature conditions where many batteries would struggle or require additional intervention.

That means fewer seasonal limitations and a more practical battery for users in northern climates or any setup that may face freezing temperatures. It is a feature that adds real-world usability, not just technical appeal.

For customers who have learned the hard way that winter can expose every weak link in a power system, built-in heating is a major advantage.

Bluetooth monitoring puts battery data in your pocket

You should not have to guess what your battery is doing. Built-in Bluetooth connectivity allows monitoring and firmware updates through mobile apps, giving you easier access to battery status and system information without extra hardware or unnecessary complication.

That means quicker status checks, simpler troubleshooting, and a better overall ownership experience. Whether you are managing an off-grid power bank, checking battery condition before a trip, or keeping an eye on system performance while on the water, Bluetooth monitoring makes the system easier to live with.

CANBUS communication for system integration

Compatibility matters, especially in more advanced power systems. This battery includes CANBUS communication support, helping it integrate with supported energy ecosystems for more coordinated system performance and monitoring.

For professional installers and experienced DIY users, that can make a big difference in how cleanly a system comes together. Better communication between components often means better visibility, smoother operation, and a more refined overall setup.

Built for harsh environments

Some batteries are fine on a bench in ideal conditions. This one is built for real environments. With an IP67-rated enclosure, it is protected against dust and water ingress, making it a strong choice for marine applications, mobile systems, off-grid installations, and industrial environments where exposure is part of the job.

That added durability matters when your battery lives somewhere that is not climate-controlled, not spotless, and not forgiving. It is one more reason this battery fits demanding use cases so well.

Expandable for larger systems

A good battery should not box you in. This model supports both series and parallel configurations, with support for up to 4 batteries in series and 16 batteries in parallel.

That gives you room to build the system you need now and expand later as your power demands grow. Start with one battery for a compact setup, or build out a larger bank for more storage, more runtime, and broader system capability.

This kind of flexibility is especially valuable for off-grid users, boat owners, RV builders, and commercial customers who want a battery platform that can grow with their needs instead of forcing a complete redesign down the road.

Long life with low maintenance

Nobody wants a battery that becomes another maintenance chore. This unit is built for maintenance-free operation and long-term service, with the cycle-life advantages that make LiFePO4 such a strong fit for frequent-use applications.

That means less babysitting, less downtime, and a better return on your investment over the long haul. It is a battery built for people who want to spend more time using their power system and less time worrying about it.

Add in the 11-year manufacturer warranty, and you get the kind of long-term backing that helps justify investing in a premium energy storage solution.

Why this 300Ah battery stands out

Customers shopping in this category are usually not just browsing. They are trying to solve a real problem. They need more runtime. More reliability. Better cold-weather performance. More confidence in the system they are building.

This battery stands out because it combines the features that matter most in real-world use:

• 300Ah capacity for extended runtime
• 12.8V output with stable LiFePO4 performance
• 3.84kWh of stored energy in one battery
• 300A continuous charge and discharge current
• 1,000A peak discharge for 5 seconds
• Smart BMS protection against overcurrent, short circuits, and temperature extremes
• Bluetooth connectivity for app-based monitoring and firmware updates
• CANBUS communication for system integration
• Internal heating for charging in low-temperature conditions
• IP67-rated enclosure for dust and water protection
• Series and parallel support for scalable system design
• Maintenance-free operation with long cycle life
• 11-year manufacturer warranty for long-term peace of mind

Ideal for

This battery is a strong fit for:

• RV house power systems
• Marine house banks and onboard energy storage
• Off-grid solar battery systems
• Backup power setups
• Industrial mobile power applications
• Work trucks, trailers, and field equipment
• Scalable 12V battery banks that need high current capability and cold-weather charging support

If you only need a battery for occasional light use, this may be more battery than you need. But if you are building a serious power system and want meaningful capacity, high current performance, rugged environmental protection, and modern monitoring features, this is the kind of battery worth buying once and buying right.

It is built for people who rely on their power system, not people who just want a spec sheet to look good.

Product Summary

This 12.8V 300Ah LiFePO4 battery is a high-capacity, high-performance energy storage solution built for demanding marine, RV, off-grid, and industrial applications. With 300Ah capacity, 3.84kWh of stored energy, 300A continuous charge and discharge capability, 1,000A peak discharge, Bluetooth monitoring, CANBUS communication, internal heating, and an IP67-rated enclosure, it is designed to deliver dependable power in tough real-world conditions. Backed by a Smart BMS, long cycle life, scalable series and parallel support, and an 11-year manufacturer warranty, it offers the kind of reliability and flexibility serious users expect.