Samsung SGH-A570 (2004) from U.S. Cellular, working and receiving calls. The battery was completely unusable, so I had to re-cell it, and now it's perfect! : r/vintagemobilephones
Samsung Cell Phone Batteries – emtcompany.com
Samsung SGH-E330: specifications, photos
Gomadic High Capacity Rechargeable External Battery Pack suitable for the Samsung SGH-T239 - Portable Charger with TipExchange Technology - Walmart.com