Battery came installed and was completly dead. I had a spare battery myself so used that and it works fine. Only hope it doesn't drain the batteries dead in a few days when not in use. Only time will tell. Hence 3 stars
Bought this to replace a much larger one I have. The much larger one has proven to be accurate and have had no suprises at the airport. As a comparison this new smaller one is reading a few grams heavier so I think it is also accurate. A 5 gram difference in readout on a 15kg bag is not something I worry about.
UPDATE: replacement battery is still working fine a month or more on, so was probably just a dud battery...
Excellent value for money for this compact, convenient and accurate luggage scale. Only 4 stars because the style and finish are a little cheap, and the buttons look like they might be easily activated accidentally when carried in luggage.