This OEM Samsung battery, model AB403450BA, is a reliable and high-quality replacement for your Samsung R410, T439, or T539 phone. Designed specifically for Samsung devices, it offers long-lasting power to keep you connected throughout the day. Whether you're looking for a backup battery or need to replace your old one, this OEM Samsung battery is the perfect solution. With its compatibility with a range of Samsung models and its superior performance, it's an essential accessory for any Samsung phone owner. Don't miss out on the opportunity to keep your phone powered up and ready to go with this OEM Samsung battery.