Lithium Ion Battery power your cordless iON tools the eco-friendly way with the 40-volt EcoSharp iBAT40XR lithium-ion battery. Compatible with all Snow Joe and Sun Joe iON models, it features high-capacity 5.0 Ah lithium-ion cells that deliver no-fade power for maximum job performance. Simply insert the EcoSharp battery pack into your iON tool of choice and power up instantly. Breathe easily and confidently, as this Energy Star-rated battery pack provides for cleaner, emission-free air during operation. Although runtime will vary depending on the tool used and the job performed, up to 65 minutes of whisper-quiet operation is a good approximation. The fuel gauge indicator lights also let you easily monitor your battery's charge capacity while it is in use. When it's time to charge, simply slide the battery into its dedicated iCHRG40 charger. There's no need to drain the battery or wait for full charge before use. It holds its charge well in storage and will retain up to 65 percent charge for six months.