55amp power converter. It might be the right time to start working on that van conversion or vintage RV rehab. It converts 110v to 12v. I got this for a battery conversion on my 5th wheel, but I bought the wrong converter. This converter works for lead acid battery, be it 12v setup or a 6v. I used it for a one week. I am selling it for $85.00 - It sells on amazon for $133.00