These rechargeable NiMH replacement batteries are for Dogtra Electronic Collars. BP2T (Please Add $7.00 To Price Shown) BP12RT BP15RT (Please Add $2.00 To Price Shown) BP20R BP50T BP74R (Please Add $7.00 To Price Shown) BP74T (Please Add $7.00 To Price Shown)BP37FBP37TBPRRBP72TPlease note, Dogtra batteries are a non returnable item. For more information please visit: /StorePolicy.asp. D250 / D500 / D500P / D502Transmitter: BP12RTReceiver: BP12RTST100 / ST200N/AYS-300 / YS-500Transmitter: N/AReceiver: BP37Y150NCPTransmitter: BP50TReceiver: Not Available175NCP / 180NCPTransmitter: BP12RTReceiver: BP20R200NC / 200NCP / 200NCP Gold / 202NCP / 202NCP Gold / 210NCP / 212NCPTransmitter: BP12RTReceiver: BP20R280NCP / 282NCPTransmitter: BP12RTReceiver: BP20R300MTransmitter: BP12RTReceiver: BP20R1000NC / 1100NCTransmitter: BP15RTReceiver: BP12RT1200NC / 1200NCP / 1202NC / 1202NCPTransmitter: BP15RTReceiver: BP12RT1500NCP / 1502NCPTransmitter: BP12RT Receiver: BP12RT1600NCP / 1602NCPTransmitter: BP15RTReceiver: BP12RT1700NCP / 1702NCPTransmitter: BP12RTReceiver: BP12RT1800NC / 1802NC / 1803NC / 1804NCTransmitter: BP2TReceiver: BP12RT1900NCP / 1902NCPTransmitter: BP12RTReceiver: BP12RT2000NC / 2000NCP / 2000T&B / 2002NC / 2002NCP / 2002T&BTransmitter: BP2TReceiver: BP12RT2300NCP / 2302NCPTransmitter: BP74T2Receiver: BP74R2500T&B / 2502T&BTransmitter: BP74TReceiver: BP74R3500NCP / 3502NCPTransmitter: BP74TReceiver: BP74R7000MTransmitter: BP12RT Receiver: BP20R7100HTransmitter: BP12RTReceiver: BP12RTIQTransmitter: BP37FReceiver: BP37TRRS, RRDTransmitter: BP15RTReceiver: BPRRRR DeluxeTransmitter: BP72TReceiver: BPRRSurestim M Plus Transmitter: BP12RT Receiver: BP20RSurestim H Plus Transmitter:BP12RTReceiver: BP12RT