I purchased an Oasser mini electric inflator from Amazon. It was $44. It worked today to add 5 pounds of pressure to the front tires on my Class B. I wanted one that worked cord free, was chargeable in the house or in my RV in an electrical outlet or in the lighter . It added 5 pounds to each tire and stopped when it reached the 55 psi that I had preset on it 👍🏻 So far I am happy with it.
Thank you for your input.