Do you have a question about the CA279 and is the answer not in the manual?
Questions and answers
John Bruder
March 7, 2025
How to change the battery
1 comments:
Mr. Anderson
March 7, 2025
To change the battery in a Sentry CA279 calculator:
1. Remove the screws – Use a screwdriver to take out the four screws securing the back panel. 2. Open the back panel – Carefully lift the panel to access the battery compartment. 3. Take out the old battery – If there is corrosion, clean the area before inserting a new battery. 4. Insert the new battery – Ensure it is placed correctly with the right polarity. 5. Reassemble the calculator – Put the back panel in place and secure it with the screws.
Make sure the solar panel is functional, as the calculator is dual-powered.
Need help?
Do you have a question about the CA279 and is the answer not in the manual?
Questions and answers
How to change the battery
To change the battery in a Sentry CA279 calculator:
1. Remove the screws – Use a screwdriver to take out the four screws securing the back panel.
2. Open the back panel – Carefully lift the panel to access the battery compartment.
3. Take out the old battery – If there is corrosion, clean the area before inserting a new battery.
4. Insert the new battery – Ensure it is placed correctly with the right polarity.
5. Reassemble the calculator – Put the back panel in place and secure it with the screws.
Make sure the solar panel is functional, as the calculator is dual-powered.
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