1 How is this power station recharged?

There are three ways of recharging your power station:

(1) Solar Charging: Easily get recharged with the efficient solar panel ;

(2)Adaptor charging: Recharged from an AC wall outlet ;

(3) Vehicle power supply charging: recharged from a carport

2 What specific solar panel is recommended for use with this item?

Thank you for your question, normal solar panels with DC adapters can be used together

3 How long does it last on at 80% or 90% of the power in use electronic devices that together result in approximately 400 watts, for example a 32 tv.

About an hour.Working time = 500Wh* 0.85 / operating power of your device.