FOSSiBOT F3600 Pro + 2 FB3840 Smart Extra Batteries Kit: Extends battery capacity to 11520Wh

Louis R. Toulouse

August 20, 2025

Decision:

Before getting this, my gadgets were always dying on me during long days or power outages, and I had to juggle multiple chargers. Now, with this kit, I can keep everything running smoothly, from my phone to small appliances, and it's been a lifesaver for family outings with the kids and pets. However, it's not perfect—the size makes it less convenient for on-the-go use, and while it performs well, I expected a bit more for the cost. Overall, it does the job well but could be improved.

• Pros: The capacity is huge, and it powers all my gadgets at once without a hitch. I liked that it charges up fast, and the app lets me keep an eye on things easily. It's quite reliable for emergencies and outdoor trips, and delivery was quick.
• Cons: It's a bit heavy and bulky, making it hard to carry around. The price felt high for what it offers, and I had some trouble figuring out all the ports at first. It seems to punch above its weight in some ways but falls short in portability.

Kavya S. Pune

August 14, 2025

Decision:

Before I got this kit I was constantly stressed about my gadgets dying especially during power outages or when I'm out for shoots as an entrepreneur in fashion I need reliable power for my equipment and personal devices My old setup was a mess of different chargers and it never lasted long enough but with this one the capacity is a game-changer it kept everything running smoothly for hours However I was disappointed by the weight it's very cumbersome and not practical for on-the-go use which is a big downside for someone like me who values portability The app control is handy but it took some time to figure out and didn't feel as intuitive as I hoped compared to other options I've tried Overall it does the job well but for the price and my perfectionist standards I expected something lighter and more user-friendly It's reliable but not without its flaws

• Pros: The capacity is very impressive it seemed to hold a charge for ages and powered my devices without a hitch the quick charging was top-notch and the app control made managing everything straightforward and efficient
• Cons: It's quite heavy and bulky which made it a hassle to carry around for my outdoor activities and the initial setup was more complicated than I expected for something marketed as smart also the number of ports felt overwhelming and not all were necessary for my needs

Michael H. Phoenix, AZ

June 23, 2025

Decision:

As a builder, I'm constantly on the lookout for reliable power sources that can keep up with my demanding schedule. The FOSSiBOT kit seemed like a perfect solution, and in many ways, it is. The power output is robust, and the ability to charge quickly is a game-changer. However, the bulkiness of the unit is a significant drawback for someone who values portability. The app integration is a nice touch, but it took me longer than I'd like to admit to get the hang of it. For the price, I expected a more seamless experience. It's a solid product, but it falls short of being the all-in-one solution I was hoping for.

• Pros: The capacity is incredibly impressive, handling multiple devices without breaking a sweat. The variety of ports means I can charge everything from my phone to power tools, which is a lifesaver on job sites. The quick charge feature is a standout, getting me back to work faster than I expected.
• Cons: The size and weight are a bit much for easy transport, making it less ideal for quick trips. The app, while useful, has a learning curve that isn't immediately intuitive. The price point is steep, especially when considering the competition.