The Greenworks 40V Universal Charger is compatible with all Greenworks’ 40V batteries. It charges a 2.0Ah battery in around an hour and an extended run time pack in under two hours. The charger also helps to maintain the life and quality of the battery cells, maximizing the run time, life time and performance of your batteries. Features and Benefits: High Performance 40V Lithium-Ion Battery Charger for low cost operation. Energy Star Rated. Quick battery charge time: 60 minutes for 2 Ah Batteries & 120 minutes for 4 Ah Batteries. Compact design for easy storage. Can be wall mounted. The charger has a detachable connection cable that is compatible with various sockets so you can charge the battery of your garden tools anytime and anywhere. Our lithium-ion batteries are compatible with many other Greenworks tools in the same voltage range for complete freedom of movement in the garden without tangled cables. Our Greenworks battery charger convinces with an output of 2A and thanks to the charge management system you always have the battery status of your garden tools in view. The LEDs built into the Greenworks Tools charger show you whether your battery is charging or already fully charged and is equipped with an ergonomically comfortable battery slot.