Description The FLEX 1120W 4-Port Simultaneous Rapid Charger is a multitasking powerhouse, fully charging up to four batteries at the same time at 280W per port in as little as 30 minutes. Its Smart Charge Gauge indicator lights allow you to easily monitor charging levels, and the durable design of its Battery Lock System prevents accidental disconnection during recharging. The charger is compatible with select FLEX FX0451-Z Stack Pack™ storage solutions for easy organization and transportation to and from the jobsite.