4 Pack Fenzer Replacement Cordless Phone Rechargeable Battery for AT&T EL2100 EL51100 EL51200 EL51250 EL5220 EL52200 EL52210 EL52250 EL52300 EL52350 EL52400 EL52450 EL52500 EL52510 4 pack Fenzer replacement cordless phone rechargeable battery for AT&T EL2100 EL51100 EL51200 EL51250 EL5220 EL52200 EL52210 EL52250 EL52300 EL52350 EL52400 EL52450 EL52500 EL52510 2.4V 350mAh, long lasting rechargeable NiCD Replacement cordless phone battery Brand new!