Summary: We had one of these for several years. It didn't give us any trouble and always held a reasonable charge. However, it was always disappointing in terms of it's power. The internal filter would get clogged so quickly that that further dropped the sucking ability. The only way it could pick up (even just) dust was by using the narrow nozzle to increase the focus of the air. Then it was okay. We left it behind when we sold the house as an excuse to get another one.
Summary: It sucks, in a good way... poor battery, neat charger.great little vacuum for cleaning up small objects, can't really clean stuff out of a carpet or anything you would use a conventional vacuum for.
Summary: Great gadget, had the dubious opportunity to pick up broken light bulb glass particles early on. Did a great job. Balance is a little awkward with this model. Comfort of use could be improved.