I go back and forth between 4 and 5 stars, and really wish I could give a 4.5 star rating because I feel that would be the most accurate. I bought the SL3500 with one expansion battery (7.5kwh total capacity) for portable applications and immediately tested it in a very harsh environment by bringing it to the black rock desert for Burning Man. Here are my thoughts so far:

1. Ordering was simple, but it was not plain how to order all of the parts that I needed. For example, I could not figure out how to order the expansion piece for the cart to hold the 3rd (and eventual 4th) battery. Customer service sent me a link and I was able to get what I needed, but I do wish it was a little more obvious on the website for easy ordering.

2. It is not apparent that the power station does not come with an AC input cord. This has to be ordered separately and resulted in a delay setting up the station because, again, this is not obvious when ordering. The same is true for PV input cables, though that makes a bit more sense.

3. The cart is quite sturdy and holds the system nicely! The wheels are about worthless for anything but smooth, bare surfaces though. I plan to modify the cart by removing the wheels and strapping it to a heavy-duty dolly instead. In the future, it would be great to see an upgraded wheel kit available for outdoor applications.

4. The system performs very well! I was able to keep a portable fridge/freezer and dual-inverter 8k btu air conditioner going in the desert heat (under shade) with no issues, which enabled me to only run my generator in the cooler hours of the morning and evening to top off the batteries. Also ran a friend's RV for a bit via the 30-amp RV plug and a microwave intermittently throughout the day with no problems. At night, it also powered several strings of LED lights. My wife's styling tools (hair dryer, straightener, etc) worked perfectly as well.

5. I didn't plan on using solar this year (upgrade planned for next spring), but a friend had two spare 250w panels so we hooked them up in series to test functionality. Input was recognized immediately and fed into the batteries with no issues, and after that I had to use the generator even less! Next year I plan to have 1200w of solar and hopefully not use generator power at all!

6. Going back a bit, setup was not incredibly intuitive for someone like me who has not previously dabbled in solar or battery systems. For instance, at first trying to charge in the house kept causing my breaker to trip. It took some time to realize that by default it is set to charge on AC input with a max of 40 amps. Once I reset this to a max of 20, no more issues, but it just wasn't obvious that this was needed or how to do so.

7. I don't love that the wifi monitoring dongle does not allow local connection. I will be using this in remote areas without wifi a lot and now have no monitoring option other than the display screen on the unit, which is not incredibly specific when it comes to state of charge and some other parameters. I am hoping this system is compatible with other aftermarket monitoring systems, which I will be looking into soon.

8. It's a small detail, but I wish there was a mounting plate somewhere on the cart for the battery breaker switch. It's inconvenient having it just hanging off the side, especially when packing and transporting the system for portable applications. I'll be looking into ways to secure this better.

So yeah, overall a great system! Way more bang for the buck than other all in one solutions out there, and the ability to expand storage while still having one unit to move around is awesome! There are some small changes/upgrades that would be nice to see in the future, and a few things about ordering and setup that could be made more apparent, especially for novice users like me.

Looking forward to getting more into the configuration and building out the system even further!

I bought a 200W solar kit to expand my wind-solar system. Everything works perfect, taking advance of the more sun hours we have at this time. Getting also a 60A MPPT charger for better results.

Bifacial 100W 12V Monocrystalline Solar Panel

It took a bit to get this going and I had to watch some YouTube videos but the system is up and running and tracking great. Love it.

Battery’s working great, about 18 months no issues. Have them in a 2S4P Using Victron battery balancer and MPPT’S. Running a 12K mini split and charging the EV.

Got my panels in record time! Well packaged and ready for installation, I'm getting antsy to get these put into service. Great price also!

7kw / 15.36kwh / 24-195 bifacial panels/ operating in split phase. After working out some kinks with AC input, balancing batteries and modifying PV array(6s4p to 4s6p) this AIO machine is performing admirably. Sept 1, 1pm in Northern New Jersey, PV input at 3.6 kw. The MPPT's ,with perturb and observe, are performing better each day. AIO Machines are adjusting to split phase operation and sharing duties to maximize performance while I'm learning how to maximize energy use and storage for my needs. If you're willing to spend some time to configure the best parameters for your application, it can be a very rewarding experience, at the right price. Highly recommend the SL3500, a real work horse.

So far I love the niche it fills for my RV but even as a standalone lifepo4 battery it's just an insane value at the moment. I am still testing (and this is only a slight negative at the moment) but I charged to full slowly (it came about 25% full) but the app only show 287.92 amp hours available. I will see what the numbers are after a full discharge and refill. But even if that is the case (which somehow with ecoworthy I think it will workout) the price, the app (very easy and clear to understand), the on off button, the long term storage function, the high low temp cut off and indicator lights, the emergency buzzer, the 15000 cycle cells AND the charge indicator lights (which could be a little more precise but seriously the app handles that) this is an AMAZING product and value proposition. I'd say 4 of 5 because of the amp hour rating but after further thought it's still 5 out of 5 because either it will prove to be just a balancing issue or it is still an insane value in a great form factor.

I have 8 running my whole house and a tells lol

I moved up to the 20A charger in hopes of not having to run my generator so long. I’m very pleased with it as it charges my 2 100ah batteries very quickly. I am impressed with the quality of Eco-Worthy products

Eco-worthy Power box for Solar tracker

Will be buying more solar from you , everything delivered on time and well packaged and great customer service, always

great panels for my sailboat

LiFePO4 12V 150Ah Lithium Iron Phosphate Battery With Bluetooth And Low-temperature Protection

Love the wattage im getting. Solid unit, great hardware. Love the power box too