On Amazon you expect a substantial price reduction from what a brick and mortar retail outfit would charge, but 90% off is a bit too good to be true. Like others I received my BR50 wrapped in a plain plastic bag without the written safety advisory all such products are shipped with. I did an overnight charge and then started using it, but the charge only lasted a couple of days on standby and less when I had been talking on it. In other words it was worse than the three year old battery it was replacing.I checked it against the Motorola counterfeit guide and it seems genuine. The date is November 2007. Then I went to the Motorola site to check their batteries and their prices. The BR50 sells for $40-$45, so obviously the $4 BR50's for sale on Amazon are either counterfeit or used -- my guess is used which would explain why some customers got batteries that were still good, and some got duds. And this is likely why Amazon wouldn't sell them direct. The batteries they sell start at $25.So my advice is to not buy ANYTHING from this vendor or any of the others peddling the BR50 for unrealistically low prices. You get what you pay for.