I would think not, Have you tried an Ecan inverter just plug it in the cigar socket when you have the engine running and remove when not that way you won't flatten the battery.
https://www.amazon.co.uk/s/?ie=UTF8&keywords=ring+can+inverter&tag=googhydr-21&index=aps&hvadid=185256102151&hvpos=1t1&hvnetw=g&hvrand=2909509898386006701&hvpone=&hvptwo=&hvqmt=e&hvdev=t&hvdvcmdl=&hvlocint=&hvlocphy=9044862&hvtargid=kwd-4077474140&ref=pd_sl_5llebclbrw_e