It's the largest 12 Volt Jump-N-Carry unit we manufacture. With 2000 Peak Amps of starting power, it will spin the starters on all class 1-6 commercial trucks. Plus, its heavy-duty Clore PROFORMER battery satisfies the most aggressive portable power users. Its onboard automatic charger can provide up to 24 Hour/365 Day continuous chargingPeak Amps - 2000