SportDOG 1825/1875/3225 Transmitter Battery Kit - Replacement transmitter battery kit for 1825 & 3225 models, and Launcher Transmitter. Kit includes a rechargeable battery, gasket, and screwdriver. SportHunter 1825 (SD-1825), 1825X (SD-1825X) (ST-101SA transmitter) WetlandHunter 1825 (SD-1825CAMO), 1825X (SD-1825XCAMO) (ST-101SA transmitter) HoundHunter 3225 (SD-3225) (ST-101SH transmitter) Launcher Transmitter (SD-LAUNCHER-T) UplandHunter 1875 (SD-1875)