Samsung SGH-S307 S300
This is an Original Standard size Li-Ion cell phone battery made by Samsung for your Samsung SGH-s307, SGH-s300, or SGH-s300m cellular phone. It"s rated at up to 300 minutes talktime or up to 8 DAYS standby time (in digital mode). These ratings are for comparison purposes only & are obtained from the manufacturer of your phone. They are based on the mAh capacity of the battery. You will only obtain these high talk & standby times under ideal conditions & most of us don"t use our phones under Ideal conditions.