The Wagan Tech iOnBoost V8 TORQUE Jump Starter provides you with 800 peak amps of power to get your engine started. The 4 cell (4S) battery provides more power than the competitor's 3 cell (3S) battery. For you, that means more power at your fingertips without having a bulky device to lug around. The powerful and reliable Li-Ion battery is also able to charge your electronics with QC 3.0 and 2 amp USB power ports, Overcharge, overvoltage, reverse polarity, and anti-sparking (short circuit) protections are all built in to make sure that you are able to use the device safely—even if you're not mechanically inclined. Also, the SMART jumper cables are nearly foolproof. If you connect the SMART cables to the battery incorrectly, a red light and audible tone alert you of the condition and won't let electricity flow. When correctly connected, they illuminate green—showing that they are ready to use!