I received a shark duo clean vac for a gift. When I attempted to use it neither battery would charge. I called customer service and they told me i would need to ship them the whole unit and I would need to pay 20.00 for shipping costs! It's ridiculous that I should have to pay anything when the unit wasnt charging since I took it out of the box. When I asked to speak to a manager I was told there were none available and someone would return my call in 24 to 48 hours. I would highly recommend not buying any products from this company. The quality of the product is lacking and the customer service isn't any better. It's clear to me this company doesn't care about their customers. If I would have purchased the vac myself I would have bought a DYSON vac. Regrettably my mom thought she was saving money to get me the shark instead. Since she lives in Florida and me in Wisconsin to return to point of purchase is not an option. So now I will throw this pos in the garbage and go get a vac from a reputable company that stands behind its products. This company basically stole money buy selling unusable products.