Mi Vacuum Cleaner G10/G9 Extended Battery Pack. Continue cleaning with an easy click. 7 * 3000mAh replacement battery; G10 compatible, providing an additional 65 minutes of work in eco mode; G9 compatible, providing an extra 70 minutes of extra work time in eco mode. Mi G10 / G9 Vacuum Cleaner .Expanded Battery Pack (Includes a spare battery and expansion base) .The expansion base can help to charge and store the spare battery; Once the expansion base is placed in the charging base, the cleaner and spare battery can be charged at the same time with a single cable.