This Ericsson BSL-10 Slim Battery T28 T29 T39 R320 R520 is a perfect replacement for your old battery. It is compatible with various Ericsson models and is designed with a slim finish to save space. The battery is internal and comes with a long-lasting charge that will keep your phone communicative for hours. The brand of this battery is Ericsson, ensuring that it is of high quality and designed to last. It is ideal for those who need a replacement battery for their mobile phone and are looking for a reliable and efficient option. This product is available in various categories such as Batteries, Mobile Phone Accessories, and Mobile Phones & Communication.