I finally invested the cash and got me an Oasis xl and when I go to plug it in the fan dint come on and the display was jumping in between high 70's and high 80's I go to adjust it but it was already set to 70 so just out of chance I plug in the battery pack and the fan came on but the display was reading 45-50. I dont know what to trust the battery pack that has the fan running but reads low humidity or do I trust the ac adapter that reads a high humidity with no fan running....