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My battery is broken, i want to replace it with a new one, but i don’t know where to find the battery. Can someone help me?

Hi, Not sure if you mean that you can’t find a replacement battery or whether you don’t know where the battery is located in the vacuum cleaner. Here’s a teardown video that may help. Between 4:31 - 4:33 minutes into the video the battery is seen being disconnected/removed from the vacuum cleaner. Usually the battery model or type number information is printed on the battery itself. Search online using that information to find suppliers that suit you best.