Tri-Tronics CM-TR103, Dog Collar Battery

Your collar battery should be the same size as shown below as there are different versions

Outline	Model	Type	Capacity	Price	Order
	12843BatteryCanada Generic Collar	NiMH 29.22 x 30.95 x 10.55mm	3.6v 300mAh	$32.00Cdn ($25.60US)	Quantity:
	6667BatteryCanada Generic Collar battery	NiMH 45.90 x 31.20 x 10.70mm	3.6v 1000mAh longer runtime than the original battery	$16.50Cdn ($13.20US)	Quantity:
	13218BatteryCanada Generic Transmitter (fits 1064000-J, 1064000D)	NiMH	12v 700mAh	$35.00Cdn ($28.00US)	Quantity:

The above batteries will have different model numbers on the product pages since they are after market replacement batteries which are as good or better than the originals. The current or mAh (milliamp hour) rating of a battery is an indication of the battery capacity or how long it will last on a charge, the higher the better.
Shipping calculated at checkout.

Cell Phone Batteries Home Page