The iONMAX [iBAT40] 40V 4.0AH 160WH Replacement Battery for SunJoe SnowJoe is a high-quality lithium battery designed specifically for use with Snow Joe products. With a voltage of 40V and a capacity of 4.0 Ah, this battery provides long-lasting power for your lawn care equipment. The model IBAT40 is a reliable and efficient choice for keeping your tools powered up and ready for use. Removed from broken mower, recently replaced battery. Fully charged, has held charge over a year!