How to Maximize Your EcoFlow Delta 2 Solar Charging

I’ve got an exciting topic for all you eco-enthusiasts out there: EcoFlow Delta 2 solar charging. This portable power station packs a punch with a 1-kilowatt-hour battery and an integrated inverter capable of delivering a continuous 1800 watts of power.

Also, considering it weighs just about 27 pounds, it’s great for many applications, like powering an off-grid shed, running lights, and charging your cordless power tools.

So, the big question is, how do we wire this up? Should we go with small 100-watt panels or larger 360-watt panels that mimic the size PV panels you often see on residential solar setups?

In this article, I’ll walk you through different configurations and help you maximize the potential of the 500 watts of input solar power to charge your EcoFlow Delta 2.

Rather watch than read? Check out this 9-minute video.

Understanding Your EcoFlow Delta 2

Before we dive into solar panel configurations, it’s crucial to understand the specifications of your EcoFlow Delta 2.

You’ll be feeding the PV power into an XT60 connector on the Delta 2, which accepts 11 to 60 volts and up to 15 amps max. Going over 60 volts will block any power input. With this in mind we will want to stay well below the 60 volts max to ensure our solar input doesn’t cut out during prime sun hours.

To connect your solar panels to the Delta 2, you’ll need an XT60 to MC4 cable. It’s not included with the unit, so don’t forget to grab one from our Amazon store.

Now, let’s get to know your solar panels.

Solar Panel Specifications

The specifications of your solar panels are essential in determining the ideal configuration. In our case, we’ll be using the Heliene 360-watt panels.

Two crucial specs to look at are the “voltage open circuit” and the “current short circuit” (MPP). The open circuit voltage is the highest voltage under no load conditions.

Heliene Solar Panel Voltage

For our Heliene panels, the open circuit voltage is around 49 volts. Knowing this helps when wiring panels in series because the total voltage should stay within the operating range of your charge controller for the EcoFlow Delta 2. Exceeding this voltage range will cause issues.

In practice, the voltage and current will be closer to the Maximum Power Point (MPP) under full sun. For Heliene panels, this typically means about 40.45 volts and nearly 9 amps of current.

Scenario 1: Two 100-Watt Panels in Series

Let’s start with a straightforward configuration. We’ll use two 100-watt panels wired in series.

1. Connect the black negative wire from the first panel to the red positive wire of the second panel.
2. Then, connect the open ends to the EcoFlow Delta 2.

When you plug it in, the EcoFlow Delta 2 app will show you the power output. With only 165 watts (about 82 watts per panel), it’s a decent setup, but let’s try to do a little bit better.

Scenario 2: Four Panels in Series-Parallel

Now we’ll take four panels and explore a different kind of configuration called series-parallel.

1. Combine two panels in series on the left and two on the right.
2. Then, use a parallel branch connector to wire these two pairs in parallel.

With this configuration, we can expect around 320 watts in current conditions, which is closer to our goal of 500 watts. This setup will maximize your panels’ potential.

Scenario 3: Large Heliene 360-Watt Panels

Now, let’s see what we can achieve with the bigger boys—the Heliene 360-watt panels.

Wiring one panel would provide approximately 320 watts, perfectly within the EcoFlow Delta 2’s specs. But let’s aim higher.

We’ll connect two panels in parallel, hitting that 40-volt sweet spot. The current will likely max out at around 15 amps, matching the Delta 2’s capacity.

When we plug this setup in, we hit around 485 watts—very close to the 500-watt goal.

Tips for Solar Beginners

If you’re new to the world of solar power, don’t be overwhelmed by all the jargon and technical terms. Start with a simple 100-watt panel and a Delta 2. Gradually build your knowledge and your setup as you become more comfortable.

And remember, we’re talking about DIY setups here. If you’re thinking about going grid-tied with a roof-mounted system, that’s a different game. We recommend leaving that to the professionals.

After all, safety and efficiency are paramount when it comes to harnessing the power of the sun.

Conclusion

In this comprehensive guide, we’ve explored different solar panel configurations for charging your EcoFlow Delta 2. Let’s sum up the key takeaways.

1. Understand Your Delta 2
   Before diving into solar panel configurations, get to know your EcoFlow Delta 2, especially its voltage and amperage limits. This knowledge is the foundation for efficient charging.
2. Know Your Solar Panels
   Familiarize yourself with the specs of your solar panels, focusing on open circuit voltage and current at the Maximum Power Point (MPP). This information guides your wiring choices.
3. Two Panels in Series
   A simple start, wiring two 100-watt panels in series, provides decent power. But we can do more.
4. Four Panels in Series-Parallel
   To maximize power output, use a series-parallel configuration using four panels. This approach can bring you closer to your 500-watt goal, depending on sunlight conditions.
5. Leveraging Large Heliene Panels
   With 360-watt Heliene panels, you have the potential to approach the 500-watt mark by connecting two panels in parallel. This setup efficiently matches the Delta 2’s capacity.
6. Safety and Knowledge
   If you’re new to solar, start small and build your knowledge progressively. Safety should always be a top priority when working with solar panels.

Next Steps on Your Solar Journey

There are fantastic solar incentives in many areas, making the payback period shorter than ever. If you’re ready to go solar on your home, click here. This link will direct you to Solar Reviews, where you can estimate your costs. Plus, they can connect you to local installers who will give you an actual quote based on your home’s specifics, like the electrical system, roof setup, and trees.

If you’d like more details about wiring your solar panels, watch this video where we go through wiring in series and wiring in parallel with actual examples.