I just soap up the windows as normal (for me) and vac off, not had any problems with streaks personally.
Battery is fixed in, which is a shame as a removable batt like on a cordless drill would really be beneficial. In total 2 vacs cleaned 22 8x8ft panels 11 of them 8 to 16 ft up and 11 were 16 to 24 ft up, plus the conference glass in the pics
Matt - agreed, pic1 on the lift was more a fun promo shot for Cozy 😄
Darran