Power up. Power your cordless ion tools the eco-friendly way with the 40-volt Eco Sharp iBAT40 lithium-ion battery. Compatible with all Snow Joe and Sun Joe ion models, the iBAT40 features high capacity 4.0 Ah lithium-ion cells that deliver no-fade power for maximum job performance. Simply insert the Eco Sharp battery pack into your ion tool of choice and power up instantly without having to mess with gas, oil, pull-cords, or tangled extension cords. Breathe easily and confidently while working with your iBAT40 since this Energy Star-rated battery pack provides for cleaner, emission-free air during operation. Although run-times will vary depending on the tool used and the job performed, 25-40 minutes of whisper-quiet operation is a good approximation of what to expect from your iBAT40-powered tool. The fuel gauge indicator lights on the Eco Sharp will also let you easily monitor your battery's charge capacity while it is in use.