Just bought a new ProTeam GoFree Flex Pro cordless backpack vacuum.You backpack vacuum fans may like this one!It was expensive-but worth it.No cord so you can go anywhere without the trailing cord.The machine runs off a 36V 12Amphr lithium battery pack.The vacuum has two speeds-hi-the vacuum will run for 70min .Low 100min.Tried the vacuum at Mikes vac place-vacuumed the whole floor with it.Used hi speed.When time to check the bag afterward-lots of black dirt and dust-threads and tiny fabric scraps from around the demo sewing machines.Also picked up a dropped penny-could hear it rattle thru the wand adn hose-then the "thoop" into the bag!After this demo session used one mark of four on the battery.After my test at home-one mark.Mike provided an adpator so I could use the Volt powernozzle with this vacuum-a cordless vacuum team-worked well!Next thing is to vacuum the dryer lint in the laundry room.This vacuum uses 1.5" commercial tools adn wands.The vacuum kit includes the vacuum,one 12Amphr battery and charger.Also a wand,multiuse floor tool,and a dust brush,crevice tool,and upholstery tool.The floor tool works well on carpet or hard floor.