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DC 30 and DC 40 Collar Replacement Batteries
Garmin no longer carries the battery for the DC™ 30 or DC™ 40 dog tracking collars due to the amount of time the device has been discontinued, however third party retailers may still sell the battery as a DC 30 or a DC 40 battery.
Due to the physical difference between the DC 30 and DC 40 collars, if a DC 40 battery is purchased for use in a DC 30 the screws and mounting pieces will be different. You will need to keep and use the parts from your original battery, as the DC 40 battery will not come with the proper mounting kit for the DC 30 collar.