Built-in battery for go anywhere 12V DC ignitor board testing. Tests from 75-100 boards before it needs recharging. Properly tests most ignitor boards: Dinosaur Electronics, Atwood, Channel products, Fenwal, Gasliter and Ram. Test procedures allow you to test the local sense and remote sense circuits separately. Comes complete with battery charger, test cables and detailed instruction manual. 1 year factory warranty.