Apparently this unit uses special Lithium batteries which can only be replaced at a special ACR authorized service station (this according to the online manual). Do you know the cost and other details involved in that. It's needed every five years? Thanks

Tech Specs:

Material:

Glass reinforced polycarbonate 

Dimensions:

1.74 in x 5.71 in x 3.03 in 

Weight:

12 oz 

Color:

Green 

Deployment:

Open antennae, press both test buttons simultaneously 

Rescue Zone:

Global 

GPS Integration:

Built-in 

Frequency:

406 MHz, 121.5 MHz 

Battery Type:

Lithium 

Country of Origin:

United States