Schumacher is the brand the professionals trust for reliable and powerful battery chargers and engine starters. Schumacher's 12-Volt Wheeled Ultracap Battery Charger and Portable Jump Starter incorporates cutting-edge ultracap technology and an internal lithium battery， giving users the choice to take the unit out of the shop to jump a vehicle or to operate it in the shop while plugged into AC power. The unit's dual ultracap/lithium design features high power density， quick charging， added cranking power and superior reliability. Ultracaps have several advantages over traditional AGM and lithium jump starters. Using ultracap technology extends the longevity of the SC1634 jump starter since its ultracaps are rated for more than 10，000 cycles while AGM and lithium jump starters typically are rated for under 1，000 cycles. Also， unlike lithium batteries， ultracaps will not be damaged if fully discharged. Another advantage of ultracaps is their quick recharging. The SC1634's ultracaps can be fully recharged in a few minutes instead of 2-hours to 4-hours to charge a lithium battery. And in extreme temperatures， ultracaps outperform lithium and AGM jump starters， delivering superior starting at -40°F or 140°F. The SC1634 will tackle the toughest jobs with 1500 peak amps for powerful portable jump starting and the ultracaps can be recharged from the internal lithium battery for additional starts.

1500 peak amps with ultracaps

580 Amp engine start， 50 Amp boost and 6 Amp charge with AC power

Compatible with standard， AGM， gel and deep-cycle batteries

Ultracaps can be recharged from the internal lithium battery for additional jump starts

Ultracapacitors are rated for 10，000 cycles/10-year lifespan compared to under 1，000 cycles for lithium and AGM jump starters

Ultracaps can be completely discharged without damage

Ultracaps provide superior performance in extreme temperatures

Ultracaps recharge in minutes instead of hours for lithium batteries

Microprocessor controlled - automatically monitors and maintains the battery once fully charged

Multi-stage charging adds precision， safety and battery life

Float-mode monitoring automatically maintains optimum battery charge

Reverse hook-up protection

Digital display， LED indicators and push-button controls

Durable steel case， compact wheels and retractable handle

4-gauge， 6 ft. cables

Color-coded metal clamps