2810 HD/60 (250-3552) Battery Information Faxback Doc. # 1745 Note: Use replacement Battery (25-3526). 1. Fully charged battery 4 Weeks (no additional RAM) 2. Fully charged battery 1 Week (4MB of additional RAM) 3. No battery or AC adapter 24 Hours (No additional RAM) 4. No battery or AC adapter 6 Hours (4MB of additional RAM) You can power your computer from the supplied AC adapter or from the rechargeable battery. However, the battery comes fully discharged, so you must use the AC adapter as described below until you have completely charged the battery. CAUTIONS: * Using an AC adapter other than the one supplied might harm the battery and the computer. * Unplug the AC adapter before you disconnect it from the computer. 1. Place the computer on a flat, level surface. 2. Slide the battery into the battery compartment. 3. Insert the AC adapter's connector into the DC IN 16V jack. Then plug the adapter into a standard AC outlet and let the battery fully charge before you use the computer on battery power. You can immediately begin using the computer on AC power. Notes: * The battery charges in about 4 hours if you are using the computer while the battery is charging. If you are not using the computer, the battery charges in about 2 hours. * The computer's battery discharges slightly if the AC adapter is connected to the DC IN 16V jack, but not to an AC outlet. * The adapter/charger does not charge the battery when the diskette drive turns on. Battery charging resumes when the diskette drive turns off. * Do not store the battery in high temperature location for extended periods. * For more information about care and use of the battery, see "Information About Rechargeable Batteries" in this manual. After a period of time, your computer's battery loses its ability to main- tain a charge. This time period varies depending upon use, storage con- ditions, and several other complex factors. When this occurs, you must replace the battery. Replace the battery with only the same type of battery (25-3526) available from your nearby Radio Shack Store. You should also charge your new battery before you use it. Low Battery Indications: The BATT indicator and the computer's beeper tell you the condition of the battery in the following five ways: * The indicator does not light during normal status * The indicator lights green when battery is fully charged * The indicator lights orange during charging * The indicator lights red and a tone sounds approximately once a minute when battery power drops below the power level needed for normal oper- ation. When this happens, save all important information and turn off the computer or connect the AC adapter. Note: The indicator might light red during disk operations. If the indicator turns off when the disk drive turns off, the battery still has plenty of power. * The indicator lights orange and blinks if the battery is removed from the computer while the AC adapter is plugged. CAUTION: When the BATT indicator lights red and the tone begins sounding, you have approximately 5 minutes to save your data to the hard disk or diskette. Connect the AC adapter or another battery if you want to continue using the 2810HD. You must attach the adapter/charger to your computer and then to an AC outlet before replacing the battery. If the adapter/charger is not con- nected before replacing the battery, data could be lost. See "Using the AC Adapter and Charging the Battery" in this manual. Your computer loses all information not saved onto a disk when the power turns off. Information about Rechargeable Batteries: Your computer uses a nickel-cadmium rechargeable battery. The battery lasts longest if you occasionally--about once a month--operate the unit with battery power until the BATT indicator lights red and the computer turns off, then immediately recharge the battery. Nickel-cadmium batteries can forget how much power they have if you always keep them fully charged. You can power the computer for up to 3 1/2 hours from a fully-charged battery. However, operating time will vary depending on the options installed, backlight brightness, and the amount of diskette and hard drive access. Hints: * You can obtain another battery (25-3526) from your nearby Radio Shack Store so you can use your computer longer where AC power is not available. * Use the battery's charge indicator to remind yourself if you have charged the battery or not. Set the indicator so the red dot appears on batteries that need recharging. You must set the indicator manually--the charge indicator is not set automatically by the computer or the battery. It is a simple mechanical switch--it has no electrical function. * Do not incinerate. * Do not connect the negative and positive terminals. (jej-05/10/94)