In the meantime, we have already had the opportunity to take a close look at many different power stations as part of our test series. You can read about our previous highlights in our list of the best. In the FOSSiBOT 3600 Pro test, we have now tried out another model that really packs a punch. It not only offers a lot of power. Thanks to its expandability, it is apparently also a real marathon runner with a capacity of up to 11,500 Wh.
Technical data
| Product name | FOSSiBOT F3600 Pro (product page) |
| Battery capacity | 3,840 Wh (expandable to max. 11,500 Wh) |
| Cell chemistry | LiFePO4 |
| Battery life | approx. 6,500 charging cycles |
| Outputs | 3x Schuko socket (AC with 230 V) 2x USB-A (18 W and QuickCharge 3.0) 3x USB-C (20 W with PD) 1x USB-C (100 W with PD) 2x DC5521 (12V/3A) 1x car connection (12V/10A) 1x XT60 (12V/25A) |
| Inputs | – AC port – Solar port – Car connection – 2x ports for additional battery |
| Charging time | AC charging: approx. 2 h at 2200 W Solar charging: approx. 2.4 h at 2000 W Car charging: approx. 28 h Combined AC + solar charging: 1.5 h |
| Features | UPS, integrated light, flashlight, charging power adjustable via rotary control |
| App support | No |
| Price | € 2,199.00 * |
Scope of delivery
- Powerstation F3600 Pro
- Carrying bag
- Protective cover
- Hand torch
- AC charging cable
- USB-C to USB-C cable
- Car cable
- PV cable
- User manual
FOSSiBOT F3600 Pro Test: Design and workmanship
Anyone who has already taken a look at the basic version of the F3600 (review) will quickly recognize the Pro version. After all, the manufacturer uses the same design to a certain extent. FOSSiBOT works primarily with matt gray tones. While the upper part is light gray, a dark gray is used in the lower area.
In view of the large storage capacity, the expansive dimensions and high weight are not really surprising. The Powerstation weighs a whopping 38 kg and measures 609 × 321 × 475 mm. To make transporting the massive storage unit a little easier, FOSSiBOT offers two different transport options. Firstly, the Powerstation has two well-padded handles on the top.
However, in view of the heavy weight, only a short lift is possible for individuals of normal strength. The whole thing works much better with two people. The mobile energy storage unit can then be carried from A to B in the style of a beer crate. However, you can take it easy on your arm muscles on firm ground. FOSSiBOT has placed a kind of suitcase handle on the lower front.
In combination with the two wheels on the underside, this makes it easy to transport. Just like the ease of transportation, the build quality is also reminiscent of the basic model. FOSSiBOT delivers very good quality here too. The plastic housing does not crack or creak at any point and as a user you get the feeling of having a technical helper at your side for many years to come.
The only thing I would have wished for is a little more protection for outdoor use. Like many other power stations, the F3600 Pro is unfortunately not really waterproof. To prevent major damage in bad weather, the manufacturer includes a practical cover. However, operation with a cover is not advisable. After all, this restricts the cooling activity of the fans.
The practical twin is the additional battery, which is only slightly lighter. A gray plastic housing and the transport rollers are also used here. A somewhat awkward-looking flap on the top accommodates the thick connection cable. The display and the variety of connections, on the other hand, are much slimmer. With 1x USB-A and 1x USB-C, it is more of a gigantic power bank.
FOSSiBOT F3600 Pro test: display and outputs
If you take a look at the front, you will notice the large, easy-to-read display. The most important parameters can be read off here. In addition to input and output power, these also include the remaining battery capacity and runtime.
The display can also show status messages such as if the battery temperature is too high. In addition to the pleasantly high-contrast display, the connections for the consumers are also located on the front.
And there are plenty of them:
- 2x USB-A (QickCharge 3.0)
- 3x USB-C (max. 20 watts)
- 1x USB-C (max. 100 watts with PowerDelivery)
- 1x car connection
- 1x XT-60 connection
- 2x round plug connection
- 3x Schuko sockets (max. 3,600 watts)
What I personally would have liked would have been a Qi charging surface on the top. There would definitely be enough space. The AlphaESS BlackBee 2000 (review), among others, proves that this can work. Despite its smaller surface area, it even offers two charging surfaces that can be used to conveniently charge a smartphone, for example.
FOSSiBOT F3600 Pro test: Lighting and inputs
The inputs for charging the power station are located at the back. The power station can be conveniently charged via a household socket using the mains connection. The XT90 port, on the other hand, enables charging via PV panels.
The two ports that can be used to connect additional batteries are also located here. There is also extensive lighting at the back. In addition to a permanently installed lamp, the power station also offers a portable lamp that can be easily charged using the included USB-C cable.
FOSSiBOT F3600 Pro test: LiFePO4 batteries
As with the F3600, FOSSiBOT also uses modern LiFePO4 battery cells for the Pro version. Experience has shown that these guarantee safety and longevity. The battery should be able to offer a high battery capacity even after several thousand full charges. Accordingly, the F3600 Pro can be expected to last for years. In order to get the most out of it, the input power can be regulated during charging.
A practical rotary control on the front is available to the user for this purpose. A maximum of 2,200 watts and a minimum of 400 watts are available. The battery of the F3600 Pro is just under 3,800 Wh and therefore huge. However, in contrast to the basic version, even more storage is available here. If you connect two additional batteries via the two available storage connections, you can provide a total storage capacity of an impressive 11,500 Wh.
FOSSiBOT F3600 Pro test: Powerful performance
In the practical test, the power station initially impresses with its great accessibility. Even newcomers are able to use the mobile storage system straight away. This is not only due to the clear arrangement of the inputs and outputs, but also to the uncomplicated operation. Inputs can be activated at the touch of a button and the input power can be conveniently regulated using the rotary control.
Incidentally, FOSSiBOT does not offer an app. I didn’t miss it in practice – at least in terms of operation. Only the lack of remote control is of course a bit of a shame. This is especially true for a power station of this size, which, once set up, should generally be operated stationary. More exciting than the ease of use, however, is of course the performance itself.
And this is where the F3600 Pro really flexes its muscles. A whopping 3,600 watts of constant output power is possible. You will hardly be able to reach this maximum with one consumer alone. My most powerful consumer was an angle grinder with 2,200 watts of power. The mobile energy storage unit had no problems with this. The F3600 Pro is therefore not only suitable for several individual consumers.
The power station should also be able to operate most of the power-hungry individual consumers that you need on the construction site, for example. The same applies to other power guzzlers such as complete gaming setups including gaming computers, monitors, sound systems and more. The possible applications are therefore truly diverse.
The UPS feature should also be emphasized. The abbreviation stands for “uninterruptible power supply” and, strictly speaking, transforms the power station into an emergency power supply. In the event of a power failure, the Powerstation steps in within milliseconds and takes over the power supply for the connected devices.
FOSSiBOT F3600 Pro test: Low operating volume
Powerstations with high performance usually have an Achilles heel – they can be extremely loud. Fortunately, this is not the case with the FOSSiBOT F3600 Pro. I could only hear fan noise from the fans when the output or input power was really high. As a user, you usually only notice this when charging anyway.
After all, the consumers usually make more noise than the fans themselves. If the fans do switch on, they are only active for a few minutes. The cooling system therefore seems to work extremely effectively. How loud the fans are when charging can be regulated with the input power level.
Of course, they are clearly audible at the maximum input power of 2,200 watts. But this should only be called up if you are really in a hurry. However, if you want to protect your ears and the battery cells, you should use the rotary control to turn the power down. When charging via the household socket, FOSSiBOT kept its promise of 2,200 watts.
This provides a full charge in just two hours. But that is not the maximum. After all, combined charging is also possible here. With an additional solar panel connected, the Powerstation can be charged in just 90 minutes. In general, the Powerstation is very modern when it comes to charging with solar energy.
After all, up to 2,000 watts of solar input power is possible. This is a truly impressive value, which makes it particularly attractive in summer to operate the power station entirely with renewable energy. Of course, the charging time is extended if additional batteries are connected. One additional battery doubles it, two additional batteries triple it.
Conclusion
The FOSSiBOT F3600 Pro absolutely lives up to its name. After all, it is an upgraded version of the F3600. It is suitable for professional users due to its expandability. Up to 11,500 Wh are possible. Apart from this, there is a good variety of connections, strong input and output power as well as durability and safety thanks to modern cell technology. But if you don’t need the expandability, you can save money and don’t have to go for the Pro version. After all, the basic model is already a really good power station.
FOSSiBOT F3600 Pro
Design and processing
Equipment
Performance
Ease of use
Price-performance ratio
91/100
The FOSSiBOT F3600 Pro combines powerful performance with high battery capacity. However, you have to put up with a heavyweight power station.
