Casio FX 260 User Manual - Page 30

Important! Incorrect use of batteries can cause them to burst or leak, possibly damaging the calculator. • Be sure to replace the battery at least once every three years, regardless of how much the calculator is used. Old batteries may leak, causing serious damage to the interior of the calculator. • The battery that comes with the calculator when you purchase it is for testing only. It may not provide full service life. • Low bettery power can cause memory contents to become corrupted or lost completely. Always keep written records of all important data. • Always be sure to load the battery with its positive (ѿ) side facing up (so you can see it). • Never try to charge batteries, take them apart, or allow them to become shorted. Keep batteries away from direct flame and heat. • Keep batteries out of the reach of small children. If swallowed, consult with your physician immediately. To replace the battery 1. Remove the screws that hold the back cover in place, and then remove the cover. 2. Remove the old battery. 3. Install a new battery, making sure that the positive (ѿ) side is facing up (so you can see it). 4. Replace the back cover and secure it in place with the screws. - 28 - Screws Battery Screws