HammerDown 1100 Watt 12V Power Inverter DC 12V to 110V AC Car Inverter - Dual 110V AC Outlets Automotive Back up Power Supply for Blenders, Vacuums and Power Tools

This unit will provide emergency power for a sump pump. I haven't actually tested the device, but I'm sure it'll work as advertised. If it bails me out I'll give it a 5 at that time. I added a switch at the battery providing the power to the unit.

Works great. Have it mounted in my pickup

Ran for few weeks no issues but one day started flashing and does not have any output voltage. 3 months old. Waiting to hear back from vender. Will update

Ghost draws off the batteries.

Tested the inverter first by connecting to the truck battery with jumper cables. The LED lights on the panel flashed and the system died. Returned it and won't be looking for any replacement soon from this vendor.

I used this to install a coffee maker in my car. Great quality. Great price.

yes GU pueno 1100 Hammercom de Puerto rico

Used twice then stopped working