Genuine Replacement Battery for Microsoft Surface Go 2 Tablet Series Restore your Microsoft Surface Go 2 (1901 or 1926 model) to optimal performance with this premium 26.81Wh Li-ion replacement battery. Specifically engineered for Microsoft's compact tablet series, this DYNU01 compatible battery delivers reliable power for mobile productivity, entertainment, and everyday use. Features stable 7.66V output and efficient 3500mAh capacity in a slim 2-cell design.