Amazon.com : 2 Pack Replacement for SportDog SD-400 Receiver Battery - Compatible with SportDog DC-17 Dog Training Collar Battery (150mAh 4.8V NI-MH) : Pet Supplies
Cameron Sino 130mah Battery Sac00-15724 For Sportdog Fieldtrainer Sd-400, Sd -400s, Yardtrainer Sd-350 - Digital Batteries - AliExpress
Battery for SportDOG 400 800 Series Dog Collar Receiver SportHunter FieldTrainer SD-400S SDT00-11907
Sportdog SD-400 Transmitter Replacement Battery: BatteryClerk.com Dog Collar
Amazon.com: Synergy Digital Dog Collar Battery, Works with SportDOG Field Trainer SD-400S Transmitter Dog Collar, Compatible with SportDOG - 650-059, SportDOG - SDT00-11910, SportDOG - 1V6-WB-120H Batteries : Electronics
Amazon.com : 2 Pack Replacement for SportDog SD-400 Receiver Battery - Compatible with SportDog DC-17 Dog Training Collar Battery (150mAh 4.8V NI-MH) : Pet Supplies
Sportdog SD-400 Transmitter Replacement Battery: BatteryClerk.com Dog Collar