Anyone using backpack batteries for hand held blowers your input would be greatly appreciated. We are using them only for the blowers due to new ordinance placed banning gas blowers for approximately mid spring to late summer. The AR 900 gives about 130 minutes of constant use set on max. Cost around 1200 us dollars (with blower included into price) Looking to purchase another back pack in the future and was looking for reviews on other brands. Power is not too bad I'll upload a video in the upcoming days.