An inverter is a VERY inefficient way to charge a mobile phone etc.
Your wasting energy converting a lower DC voltage to a higher mains AC voltage and then converting an AC voltage back down to a lower DC voltage. Very wasteful.
An inverter maybe as low as 60% efficient, wasting upto 40% of the power you have.
A DC-DC converter like a car charger for your phone will be upto 98% efficient.
Mains powered lighting, you can get an LED lamp from the £ shops that looks like a household bulb, but runs off 2 or 3 AAA batteries (design varies) but they run for a week even with cheap £ shop batteries.
An inverter may be inefficient but it is very convenient!
I started off using battery powered LED lights and them dimming after a couple of days, replacing batteries, recharging phone/camera locked in the car from the cigarette lighter. Then an electrician friend suggested an inverter and worked out how long it would take the battery to run down using an energy saving bulb. Bought an inverter and tried this at home parked on the drive - it worked great and I could use ordinary consumer bits and pieces - like making my own light from a bulb holder, plug and a few metres of cable.
I now use LED bulbs and an Ikea extension lead with 2 built-in USB sockets - it works great with no batteries to replace (just have to start the car every couple of days to be sure).
A day of all things motorhome and campervan. The show is held both in the main indoor arena and across the grounds. Catering, hot drinks and food options are available. Easy access to the site and free parking included. Win one of five pairs of day tickets