EC-4044 (650-0808) Battery Faxback Doc. # 3483 The EC-4044 uses a lithium manganese battery for about 1500 hours of operation. Replace the old battery with Radio Shack Catalog Number 23- 162. Knowing When to As a battery runs down, the display begins to dim. Replace the When you find it difficult to read the display under Battery normal viewing conditions, the remaining battery life may be only about one week. Effects of The calculator cannot hold data in its memory when the Replacing the battery is removed or becomes discharged. Replacing Battery the battery has the same effects as pressing 3rd [RESET] Y Y Y. Replacing the To replace the battery, follow these steps: Battery 1. Turn the calculator off and turn it over so that the back is facing you. 2. Placing your thumb on the battery cover, press and slide until the cover slides off the back of the calculator. 3. Remove the discharged battery and install a new one as shown. Be sure that the + symbol is facing up (toward the back of the calculator). 4. Lay the battery cover flat inside the battery compartment, and slide and snap the cover back into place. The display shows Mem cleared, and the calculator is ready to be used. Caution: Dispose of an old battery properly. Do not incinerate a battery or leave it where a child can find it. (br/all-12/08/94)