Wireless Solutions 310955 Car Charger For Samsung A870 A990 U340 U550 U620 Snap For use with Samsung: JITTERBUG SCH-A630 SCH-A645 SCH-A850 SCH-A870 SCH-A930 SCH-A950 SCH-A970 SCH-A990 SCH-U340 SCH-U410 SCH-U520 SCH-U540 SCH-U550 SCH-U620 SPH-A110 SPH-A120 Snap Variable rate charging cannot overcharge the battery. Heavy duty 8' x 4 mm diameter cord returns to original shape after multiple stretches.