Based on our own experience, the EBTOOLS Controller Battery Regulator Display is a must-have device for those on-the-go! This efficient power management tool allowed us to control and monitor our battery`s performance, making sure it's always in top condition. Placed in the category of Battery Chargers & Portable Power in Jump Starters this device is the perfect companion for drivers and outdoor enthusiasts alike. The only downside is its heavy price tag, but the benefits outweigh the cost in the long run..