As reported by others, the 220V inverter has a problem with various loads (computer switching power supplies, ...) function, proper iron core transformers or 220V normal light bulbs (halogen or "normal") but. Is probably also a useful application that installed lamp is very weak and because of that it is fixed in the device, not really super helpful - unless a second person holds the heavy equipment in better position for illuminating the repaired object, for changing a car tire, where it can stand on the ground, you do not really need really light, as long as there is no night without moon or with many clouds ...
The jump start we will (hopefully) never need and therefore never try. There is a switch which ensures that the terminals are de-energized and can cause a short circuit if you accidentally somewhere should touch metal with it. Would be bad for the battery ...
The compressor runs, but have not yet often used it - you have to make sure that you comply with the hours of operation and pause (available on the device max 10min "to", then 20min min "from"..)! Otherwise there could actually what melts, the part is still quite hot and everything around is made of plastic!
The 12V connector is protected by a 15A, because you can already infected some. We use the machine to a Handpresso espresso machine (12V / 140W) and a fridge (12V / 50W) outside the car to operate. In between, we have a cable with 12V-discharge protection (from Alpine, goes quite well) to avoid deep discharging the battery of the power station - which is generally important in lead-acid batteries. The battery has indeed 17Ah to instructions. A rough calculation is 17Ah * 12V = ~ 200Wh (actually you'd expect with about 13V), ie the 50W chest can thus operate approximately 1-2 hours, enough for a picnic. Next we would not want to unload the battery in order not to burden him too much.
The unit also has a small (transformer) AC adapter for charging this (output: 15V DC / 1000mA). This only works in 230 networks, unless he is with 110V traveling in countries, you can load only via the 12V car cable or you have to buy a new power supply with the same output data. The power supply is also a bit too big, so that it even fits in the storage compartment of the device. Not really thought through the whole thing, since one must therefore always pack up somewhere else with the charger when traveling and possibly therefore forgets sometimes. Ins compartment fits in at least the 12V charging cable for the car and the compressor hose, including air vents and the spare fuses, and possibly because you can also, for example, pour in a repair kit for the air mattress.
For this purpose we have a 12V / 5W solar panel to recharge on sunny days directly connected to the charging socket, the plug is made for itself. There's no more switching between them needed our appliance discharges over the cable / panel when there is no sun - that's fine.
The device has a charging light, and will turn red when one infects the AC adapter (or the panel at Sun). The LED, however, does not go out when the battery is full (even after a long charging time). Therefore, one does not really have a good control when the battery is actually full. In the manual is also nowhere as long as you really need at least the battery charge, so all this is "a matter of feeling." This is described not really satisfactory. At least has become expired when this machine when loading or anything warm, have had seemingly lucky. A bit of concern we had, just after we have read the other recessions. The device - presumably including lead acid battery - is nunmal cheap goods from the PRC - which one should then not forget that. Therefore, it is certainly useful, it extensively in a non-flammable (and possible "acid-fast") environment - to test before it in the car or anywhere else operates - for example on tile floor. We did it at least.
We have the 15A fuse sometimes taken out and measured the current flowing through the fuse contacts. When the light pump and inverter are turned off, no current flows. Removing the fuse when not in use, therefore, seems superfluous, we do not at least. But what is to be observed, the button of the test function (which very roughly indicates the charge status of the station on 4 LEDs when you press it). This test function works even without inserted fuse! Therefore, when closely packed the station somewhere in the trunk, you should make sure that the button is accidentally pushed. That is the battery safely discharged slowly!
The self-discharge can therefore actually only come from (cheap) battery itself - at least for us (how much that is, are only able to show long-term tests). What in the end also remains open is how long the battery will hold general, which is also only time will tell ...
All in all, we have a mixed relationship with the device, probably other devices at this price will also be not really better, as far as adequate for our purposes. And for use only on holiday a really expensive device is also not useful.
