This is a Gen 1 replacement battery pack for the Gen1 X7 Plus (1.5 Acre) and X7 Pro (3 Acre).  This is 20V 10.0Ah.

Part Number: 16600704-01

Compatible With: Sunseeker X7 Plus Gen1 (1.5 Acre)/Sunseeker X7 Pro Gen 1(3 Acre)