HP d248 Hardware Reference Guide - HP Compaq Business Desktop d228 and d248 Mi - Page 25

2 Battery Replacement Replacing the Battery The battery that comes with your computer provides power to the real-time clock and has a lifetime of about three years. When replacing the battery, use a battery equivalent to the battery originally installed on the computer. The computer comes with a 3-volt lithium coin cell battery. ✎ The lifetime of the lithium battery can be extended by plugging the computer into a live AC wall socket. The lithium battery is only used when the computer is NOT connected to AC power. Å WARNING: This computer contains an internal lithium manganese dioxide battery. There is a risk of fire and burns if the battery is not handled properly. To reduce the risk of personal injury: ■ Do not attempt to recharge the battery. ■ Do not expose to temperatures higher than 140°F (60°C) ■ Do not disassemble, crush, puncture, short external contacts, or dispose of in fire or water. ■ Replace the battery only with the HP/Compaq spare designated for this product. Ä CAUTION: Before replacing the battery, it is important to back up the computer CMOS settings. When the battery is removed or replaced, the CMOS settings will be cleared. Hardware Reference Guide 2-1