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EG4 is a solar company focused on providing affordable battery backup solutions. Founded in 2020, EG4 aims to make solar power accessible to everyone, from DIYers to businesses. Their flagship product is the EG4-LifePower4 lithium battery, offering a 5.12kWh capacity and 99.0% roundtrip efficiency, ideal for residential use. EG4 also offers the EG4-LL Lithium Battery (V2), a high-end server rack battery with a 5.12kWh capacity and impressive performance features.

In addition to batteries, EG4 is expanding into the inverter market with the EG4 18k inverter, designed for both grid-tied and off-grid systems. EG4 has grown quickly due it's reliable product line, budget friendly options and Texas based operations.

Introduction

What is the downtime you experience while your batteries recharge? Re-volt-ing! Ok, it's a terrible joke, but we all know the frustration of not having the right battery backup system for your solar setup.

Batteries are expensive. Probably the most expensive part of going off-grid. EG4 is trying to change that. They produce great batteries at a far more affordable price and have broken into the inverter market with a new 18K solar inverter.

If you need batteries or inverters, you need to get to know EG4.

About EG4

EG4 is on a mission to empower energy independence for everyone. Whether you aim to achieve complete energy autonomy, seek backup power solutions, optimize energy usage in your RV, remote cabin, or any solar-powered application, EG4 products are designed to energize every aspect of your life.

EG4 is dedicated to making solar affordable for everyone, giving consumers the ability to be fully self-sufficient. EG4 was founded as an arm of Signature Solar in 2020 in order to bring batteries and integrated inverter solutions to the US market. They offer Texas-based repair, support, and assembly.

What Is EG4's Signature Product?

EG4 has expanded its product offering a lot in the last few years, but they are best known for their solar batteries.

EG4-LifePower4 Lithium Battery

The EG4 battery is an impressive lithium iron phosphate battery with a usable capacity of 5.12kWh and a roundtrip efficiency of 99.0%. With a warranty of 5 years, this battery is designed for residential use and offers both peak and continuous power output of 5.12kW. It has a depth of discharge of 80% and a degradation rate of 7.0%.

In terms of physical characteristics, the EG4 battery has dimensions of 441.96mm (L) x 154.94mm (W) x 469.9mm (D). Its scalability allows for easy expansion, making it a convenient choice for adding more batteries if needed. It can operate off-grid or serve as a reliable backup power source.

One standout feature of the EG4 battery is its impressive storage capacity of 5.12kWh, which far surpasses many standard deep-cycle solar batteries on the market. It achieves this through a 16-pack of high-quality LiFePO4 cells, known for their power storage capability and longevity.

With a lifespan of 10 to 20 years, backed by the warranty and the built-in Battery Management System, this battery offers peace of mind and protection against common issues such as over-charging. Furthermore, its rack-mountable design allows for easy expandability, making it convenient to stack and connect multiple batteries to create a power storage system with a potential capacity of up to 81.92kWh.

EG4-LL Lithium Battery

The EG4-LL Lithium Battery (V2) is a top-of-the-line server rack battery that offers exceptional performance and reliability. With a very reasonable price tag compared to the competition, this battery is a significant investment, but it comes with a range of features and benefits that make it worth considering.

First and foremost, the EG4-LL Lithium Battery boasts an impressive capacity of 5.12kWh, making it suitable for demanding solar and non-solar applications. Its 100A internal Battery Management System (BMS) ensures efficient operation and allows for over 15 years of daily charging and discharging without any issues. With 16 UL listed prismatic 3.2V cells, this battery has been rigorously tested for 7,000 deep discharge cycles to 80% depth of discharge (DoD).

The battery's 99% operating efficiency ensures optimal energy conversion and utilization. It also features an LCD screen that provides quick access to important battery information. The EG4-LL Lithium Battery is compatible with popular closed-loop inverters, including Schneider, Solark, Victron, Growatt, and EG4, making it easy to integrate into your existing setup.

Safety is a top priority with this battery. It includes dual onboard automatic fire arrestors, ensuring failsafe operation and protection against rare hardware failures. The EG4-LL Lithium Battery is also environmentally friendly and lead-free, meeting UL 1973 and UL 9540A standards.

In terms of expandability, this battery allows parallel connection of up to 64 batteries, providing a total storage capacity of up to 81.9kWh while maintaining BMS communications. This flexibility allows you to scale your power storage system to meet your evolving needs.

To provide peace of mind, the EG4-LL Lithium Battery comes with a 10-year warranty, supported and serviced from Texas. The battery is designed to last up to 20 years, so you know you'll get the most out of your investment.

What’s New with EG4?

EG4 is trying to break into the inverter market against brands like Sol-Ark, and so far, so good. 

The EG4 Solar 18k inverter has a maximum output of 18,000 watts and can be used to power both grid-tied and off-grid systems. The inverter also has a built-in battery charger, so it can be used to charge batteries from solar power.

The inverter is designed to be easy to install and use, which is great for DIYers. The inverter also has a user-friendly interface that makes it easy to configure the settings.

It’s able to convert up to 96% of the solar power that it receives into usable electricity, which can really cut down on your utility bills. 

Who is EG4 For? 

EG4 makes great lithium batteries that can provide backup power for critical loads during outages, keeping your servers, networking equipment, and medical devices powered for longer. They are also perfect for off-grid use if you want to keep your home powered during outages using stored solar energy.

Again, the EG4-LL Lithium batteries come with a 10-year warranty, supported and serviced from Texas. The battery is designed to last up to 20 years, so you know you'll get the most out of your investment.

You can find a range of EG4 products at ShopSolar.com.

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