The Schumacher DSR128 Lithium Ion Jump Starter provides 2,000 peak amps and 650 cranking amps for 12V systems. Powered by two lithium iron phosphate batteries, this starter offers up to 5x more cycle life and 4 to 5x more cranks than lead-acid battery jump starters, the company says. Notable features include: scrolling digital display; push button controls for easy operation; professional clamps with ergonomic grips; rust and corrosion-proof case; dual USB ports for charging mobile devices; and 2A external automatic charger for quick recharge without overcharging.