A 56-watt power adapter for rapidly recharging NOCO Boost & NOCO Boost Max UltraSafe Lithium Jump Starters.Charges five times faster than using a traditional 2-amp USB wall or car charger. Compatible with NOCO Boost & Boost Max UltraSafe Lithium Jump Starter models GB70, GB150, GB250+, GB251+ & GB500+. A high-frequency, high-efficiency power supply engineered for efficient energy transfer. Includes a 56-watt power adapter, plus 4 cord sets for Australia, Europe, North America, and United Kingdom.