1. Lever the battery cover open by using a small flat-headed tool.
2. Remove the old battery from the battery cover.
3. Insert the new battery inside the cover with the negative (-) side outwards.
4. Align the ledge on the battery cover with the slot on the connector and press the battery cover back
into place. When changing the battery, make sure the sealing ring is not damaged, in which case you
should replace it with a new one.