Installing Blade Components 245Blade System Board NVRAM Backup BatteryThe NVRAM backup battery is a 3.0-volt (V), coin-cell battery.Removing and Installing the NVRAM Backup BatteryWARNING: There is a danger of a new battery exploding if it is incorrectlyinstalled. Replace the battery only with the same or equivalent type recommendedby the manufacturer. Discard used batteries according to the manufacturer'sinstructions. See the safety instructions that came with your system for additionalinformation.1 Remove the blade. See "Removing a Blade" on page 145.2 Open the blade. See "Opening the Blade" on page 149.3 If you are replacing the battery in a PowerEdge M910, M905, M805,M710HD, M610x, or M605 system, you must remove the system board toaccess the battery. See "Blade System Board" on page 255.4 Remove the battery by lifting it straight up from its connector. SeeFigure 3-52.See Figure 7-1 (PowerEdge 910), Figure 7-2 (PowerEdge M905), Figure 7-3(PowerEdge M805), Figure 7-4 (PowerEdge M710), Figure 7-5 (PowerEdgeM710HD), Figure 7-6 (PowerEdge M610), Figure 7-7 (PowerEdgeM610x), Figure 7-11 (PowerEdge M605), or Figure 7-12 (PowerEdgeM600) to locate the battery on the blade board.5 Install the new battery with the side labeled "+" facing up. SeeFigure 3-52.