The PRORUN^© 20-volt Charger is simple to use and reaches full charge in 60 minutes for the 4.0 Ah powerhouse. Featuring innovative charging technology, it is equipped to protect and extend the life of the battery. Easy-to-understand LED indicator system lets you know in just a glace if the battery is in mid-charge or has reached full capacity. Backed by a 3-year limited warranty, you can trust this charger to keep your batteries work-ready all season long.