Like many reviews I did initially have difficulty receiving my product with many emails back and forth in broken English, somehow with all customer service staff not understanding me, which I found problematic, although I did keep getting responses and I did place an order a few weeks before Christmas which would be busy for any company.
I did however receive the River 2 Max I ordered in brand new condition with the free gift Camping Light (£60 on website) and special off Wifi enabled Smart Plug (£35 on website) for £9.10.
I also used code THEEXPAWERS for another 8% discount.

The camping light is brilliant, not just the light coming from it but also the ability to charge other devices from it with a USB pass through connection.
The Smart Plug is also a usefull tool allowing any gadget to be plugged into it and then time controlled or remotely activated using the app on my phone.
The RIVER 2 MAX powerbank is rated at 500W A.C. with suprerboost to 1000W which is enough to run my Henri hoover (630W) away from the house to clean my car. It is also powerfull enough to run the diesel heater in my campervan which requires a 12V supply.
I wired a cigarette style plug to the diesel heater connections and during startup the heater draws ~130W until the glowplug lights the fuel then drops down to ~20W during operation, the display informing me that there was 18 hours of usage remaining before needing a recharge.
Bloody brilliant, as the diesel heater had taken out 2 leisure batteries previously, where it will draw about 8A of current during startup and cooldown.

not a bad smart plug this was the second one I have purchased and overall the plugs are still working like they should be

Product works as expected, easy to setup within the app.
Can be controlled from the app and Google.
Like the ability to see current as well as historical electricity usage.