Rechargeable Battery Compatible with SportDOG SAC54-13734 Works for SportDOG FieldTrainer SD-425X Transmitt Dog Collar and many other models Li-Pol, 3.7V, 200mAh This battery is made with high quality Japanese cells, it is designed to meet or exceed the original battery performance. Long Lasting, Ultra Hi-Capacity Battery

Synergy Digital Dog Collar Battery, Compatible with SportDOG FieldTrainer SD-425X Transmitt Dog Collar, (Li-Pol, 3.7V, 200mAh) Ultra High Capacity, Replacement for SportDOG SAC54-13734 Battery

Specifications:
Battery Chemistry: Li-Pol
Voltage: 3.7V
Capacity: 200mAh
Compatible with: SportDOG SAC54-13734 Battery
Works for: SportDOG FieldTrainer SD-425X Transmitt Dog Collar and many more