EPOCH 12V 300Ah (3.84kWh) Essential Series - Bluetooth & Heated LiFePO4 Battery

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

When your battery bank is carrying real responsibility, you need more than basic capacity. You need dependable power, strong protection, cold-weather charging capability, and the flexibility to build a system that actually fits your needs. This 12.8V 300Ah LiFePO4 deep cycle battery is built for exactly that.

Designed for demanding energy storage applications, this battery combines high-capacity lithium iron phosphate chemistry, integrated internal heating, Bluetooth monitoring, and a Smart Battery Management System into one maintenance-free power solution. Whether you are upgrading an RV, building an off-grid system, supporting marine electronics, or replacing outdated lead-acid batteries, this unit is designed to deliver stable output, reliable performance, and a much easier ownership experience.

With 300Ah of capacity at 12.8V, this battery stores approximately 3.84kWh of energy, giving you the kind of usable runtime that matters in the real world. That means longer operation for house loads, fewer compromises on power use, and less time worrying about whether your battery bank can keep up.

Built for dependable deep cycle performance

Some batteries are fine for occasional use. This one is built for systems that get used regularly and need to keep delivering day after day.

Its LiFePO4 chemistry is designed for deep cycle applications where stable power and long-term durability matter. Compared to traditional lead-acid batteries, lithium iron phosphate offers more consistent voltage, better usable capacity, and far less maintenance. That translates into a battery that feels more dependable in actual use, especially when your setup includes critical loads or frequent cycling.

If you are tired of voltage sag, slow charging, constant upkeep, or batteries that seem to lose performance too early, this is the kind of upgrade that makes a noticeable difference.

Serious capacity with strong current capability

With 300Ah capacity, this battery gives you the storage needed for longer runtimes and more capable 12V systems. It supports 200A maximum continuous discharge and 200A maximum charge current, with a 400A peak discharge for 3 seconds.

That makes it a strong fit for applications where both runtime and dependable current delivery matter. Whether you are powering an inverter, house loads, electronics, lighting, refrigeration, pumps, or other essential equipment, this battery is built to support stable output without feeling undersized for the job.

For many buyers, this is the sweet spot between compact lithium batteries that run out too quickly and oversized systems that cost more than necessary.

Internal heating for cold-weather charging

Cold weather is where weak battery systems start showing their limits. This battery is equipped with internal heating to support charging in sub-zero conditions, making it a much more practical option for winter use and cold-climate installations.

That matters for RV owners, off-grid cabins, marine setups, work trailers, and backup systems installed in garages, sheds, or other spaces where temperatures can drop fast. Instead of treating winter like a season-long compromise, you get a battery designed to stay more usable when temperatures turn against you.

For customers who have learned the hard way that cold weather exposes every weak link in a power system, built-in heat is more than a nice feature. It is peace of mind.

Smart BMS protection built in

A quality lithium battery is about more than capacity. Protection matters just as much.

This battery includes an integrated Smart Battery Management System (BMS) to help protect against:

• Overcharging
• Over-discharging
• Overcurrent
• Short circuits
• High and low temperature conditions

That built-in protection helps support safer operation, better system stability, and longer service life. It also makes the battery easier to trust in demanding applications where reliability is not optional.

When your battery is supporting power you actually depend on, a smart BMS is one of the most important features you can have.

Bluetooth monitoring makes ownership easier

Battery monitoring should not feel like guesswork. With Bluetooth connectivity and compatibility with iOS and Android apps, you can check battery status right from your phone.

That means quicker system checks, easier troubleshooting, and better visibility into how your battery is performing. Whether you are managing an off-grid setup, checking your RV battery before a trip, or keeping tabs on a marine system, Bluetooth monitoring gives you a more convenient way to stay in control.

It is one of those features that makes life easier every single time you use the system.

Flexible for multiple system designs

This battery is designed to work with a wide range of power setups, thanks to support for both series and parallel configurations. It can be installed in systems with up to 4 batteries in series and 4 in parallel, giving you the flexibility to expand storage and build the voltage you need.

That makes it easier to size your system for your current needs while keeping the option to grow later. Start with one battery for a compact setup or build a larger bank for more runtime and system capability.

For DIY users and professional installers alike, that flexibility adds real long-term value.

Maintenance-free and built for long-term use

One of the biggest reasons people move to LiFePO4 is simple. They are done babysitting batteries.

This battery is designed for maintenance-free operation, so you can spend more time using your system and less time checking water levels, cleaning terminals, or dealing with the usual headaches of older battery types. It is also built for long cycle life, making it a strong fit for applications where regular charge and discharge is part of normal use.

That makes it especially appealing for people who rely on their battery bank often and want something built for the long haul, not just occasional standby duty.

A strong fit for demanding everyday use

This battery works well in a wide range of applications where stable power and flexible installation matter, including:

• RV house battery systems
• Marine house banks
• Off-grid solar storage
• Backup power setups
• Mobile work trailers
• Cabins and remote properties
• Deep cycle battery banks for inverter-based loads

In short, it is built for people who need real battery performance, not just a basic replacement.

Why buyers choose this 300Ah battery

Customers looking at a battery like this are usually trying to solve a real problem. They need longer runtime. Better cold-weather performance. Less maintenance. More confidence that the battery they buy today will still be the right choice years from now.

This battery stands out because it combines the features that matter most:

• 300Ah capacity for extended runtime
• 12.8V output with approximately 3.84kWh of energy storage
• LiFePO4 chemistry for dependable deep cycle performance
• Internal heating for cold-weather charging support
• Bluetooth app monitoring for easier battery tracking
• Smart BMS protection against overcharge, over-discharge, overcurrent, and short circuits
• High and low temperature disconnect protection
• Support for up to 4 batteries in series and 4 in parallel
• Maintenance-free design for easier ownership
• 11-year manufacturer warranty for long-term confidence

If you only need a small battery for light occasional use, this may be more capacity than you need. But if you are building a dependable deep cycle system and want meaningful runtime, built-in cold-weather support, modern monitoring, and strong protection, this battery makes a lot of sense.

It is built for people who want their power system to work without constant second-guessing.

Product Summary

This 12.8V 300Ah LiFePO4 deep cycle battery is a high-capacity energy storage solution designed for dependable performance across RV, marine, off-grid, and backup power applications. With internal heating for cold-weather charging, Bluetooth monitoring, a Smart BMS, and support for series and parallel system expansion, it offers the kind of flexibility and reliability serious users want. Add in 200A continuous charge and discharge capability, maintenance-free operation, and an 11-year manufacturer warranty, and you get a battery built for long-term use in real-world conditions.