Skil SB2001C-10 PWRCore 40 20 Cordless Single Stage Snow Blower Kit (6 Ah) NewSkil PWRCore 40 Brushless Lithium-Ion 20 in. PWRCore 40 20 in. PWRCore 40 6 Ah Lithium-Ion Battery – BY8723C-00. Battery Amp Hour 6 Ah. Power Type Electric – Cordless. Powerful Performance: The digital brushless motor provides efficient, high-performance power for longer.