400W Wagan Power Inverter 2 USB Ports 12VDC to 120VAC. This inverter is probably the greatest built I’ve observed. The fan getting a bit loud is just the inverter keeping cool. A bit fan noise should make you feel comfy that this device won’t overheat. So far I’ve utilized it to recharge flashlights, 18 and 7.2 volt DeWalt batteries, and NiMH rechargeable AA and AAA’s. It has performed a fine job at everything I’ve put to it.
