The 4020 Wheel Charger Engine Start is a game-changer in the Battery Chargers & Portable Power category. After I put it to the test, I was impressed with the fast charging speed and the ease of use. The compact design makes it easy to move around, while the indicators show the battery level, making it a very efficient charger. The only downside is that it's a bit pricey compared to other chargers in the market.