The innovative 20V li-ion Battery delivers high performance and efficiency among all Wild Edge tools. A quick charge time of 120 minutes for a 4 AH battery makes the 20-volt series of power and garden tools a great option when looking to replace gas powered products. Featuring a simple snap on and off design for ease of use and innovative battery charge level indicator with one USB charging port. Li-ion batteries offer no negative memory effect, consistent fade free power throughout its entire run cycle and 3 times longer run time than NiCad batteries, you can now complete your yard work with one battery platform that will provide you with the power and performance you need to get the job done quickly and efficiently.