UPS 120, UPS 150, UPS 250, UPS 300, UPS 301, UPS 500, UPS 600, UPS 750 and UPS 900 Uninterruptible Power Supplies Caterpillar

Changing the Battery

The controller board uses a lithium battery. The battery has an estimated life of 5 years.

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Always replace a lithium battery with another lithium battery. Care must be taken in handling a lithium battery to prevent short circuiting the terminals on the battery. Improper handling of a lithium battery may cause an explosion that may result in personal injury from caustic burns.

1. Remove power from the system.

2. Open the appropriate cabinet door.
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   Illustration 1	g01272181
   Controller board (1) Battery

3. Wear an electrostatic discharge wrist strap. Gently remove the battery (1) from the receptacle by pressing against the center retaining tab. Lift the battery (1) from the receptacle.
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   Illustration 2	g01272178
   Pressing the battery against the center of the retaining tab

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   Illustration 3	g01272179
   Removing the lithium battery from the board

4. Replace the battery (1) with the identical model as the battery (1) that is installed.

5. Close the cabinet door.

6. Return power to the system.

7. Reset the system clock.
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   Table 1

   Description	Specification
   Nominal Voltage	3.0 V
   Typical Voltage	3.1 - 3.3 V
   Rated Capacity	200 mAh on 15 k ohm to 2.0 V at 21°C (70°F)
   Operating Temperature Range	−40°C to 60°C (−40°F to 140°F)