I purchased an Exide Charger (has wheels) yrs ago ..for like 80$ ...it has 2amp, 40amp, and 100amp jump start...has worked like a champ for as long as I have owned it ..Highly Recommended as a GREAT part of your shop tools!
2amps great for lawnmowers, motorcycles,anything around the house
40amps for vehicles.
100amps for stubborn vehicles ..lol
Tim