SWMBO wants to use her 1750w hair dryer when not on hook up. An inverter seems the answer, and connected to the main battery, and then we can just run the engine for a few minutes when she's using it, we can also charge her e-bike battery when on the move. We have been quoted £450 plus fitting for a 'an all singing and dancing 2kw' inverter. He said we could find a cheaper one on the 'net' which he would fit, but obviously wouldn't warranty it. Help please, thanks.