EC-4045 Student Scientific Calculator (650-0822) Batteries Faxback Doc. # 31921 REPLACING THE BATTERIES Your EC-4045 is powered by two RS389A-type button cell batteries (Cat. No. 23-117). When the display dims, follow these steps to replace the batteries. 1. Use a small Phillips screwdriver to unscrew the screw from the battery cover on the back of the calculator. 2. Remove both batteries and dispose of them promptly and properly. WARNING: Never allow children to play with the batteries. 3. Insert two new batteries with the positive (+) side facing up. 4. Replace the cover and secure it with the screw. (EB 4/15/96) (LB 3/28/96)