The SAC00-12544 rechargeable battery is compatible with receiver collars with model number SDT00-12490. This model number is found on the following SportDOG receiver collar models: SD-1225, SD-1825, SD-1825CAMO, SD-2525, SD-3225.

Please note: If your receiver collar has the model number SDT00-15944, you will need the receiver battery kit SR-325 series.