Battery Replacement Procedure for Smart-UPS 420 and 620 VA Models

Self Test

By default, the UPS performs a self-test automatically when turned on, and every two weeks thereafter. If the battery fails a self-test, the UPS emits short beeps for one minute and the red replace battery LED illuminates. The UPS repeats the alarm every five hours. Loads are not affected by a failed test.

The UPS charges its battery whenever it is connected to utility power, whether the UPS is on or off. Recharge the battery overnight and perform the self-test procedure again to confirm the bad battery condition. Either hold the "ON" button in for a few seconds, or turn the UPS off and then on, to initiate a battery test. The Replace Battery LED does not light and the alarm stops when the battery passes the self-test.

If the Replace Battery LED illuminates after the self-test, the batteries are worn and need to be replaced.

Caution: Please confirm that the UPS is plugged directly into the wall. Excessive temperature may decrease battery life expectancy or cause an incorrect replace battery indicator.

Ordering A New Battery

In-Warranty service:
If you have determined that your UPS requires a new battery and it is in warranty, contact APC support.

Out-of-Warranty options:
If you have determined that your UPS requires a new battery and it is out of warranty, see your dealer or call the APC Replacement Battery Hotline at 1-800-349-4034.

If you would like to trade in your UPS for a new APC unit at a significant discount, read about the Trade-UPS Program.

If you prefer, you can purchase User-Replaceable Battery Cartridges on-line directly from APC.

Battery Replacement Procedure

Note: Please read the warning at the bottom of this page before performing the procedure below.

Tools required: Screwdriver.

Battery replacement is a safe procedure, isolated from electrical hazards. You may leave the UPS and loads on for the following procedure. Caution: To avoid personal injury due to energy hazard, remove wrist watches and jewelry such as rings when replacing the batteries. Use tools with insulated handles.

1. Lay the UPS on its left side. Remove the two screws holding on the battery door and open the door.

2. Gently pull out the battery by grasping the white tab.

3. Disconnect the two wires connecting the battery to the UPS. Loosen the wires by gently wiggling them while pulling straight back from the battery connector.

4. Connect the new battery in place of the old. Note: Small sparks at the battery connections are normal during connection.

5. Replace the new battery in the UPS. Use care to avoid pinching the wires.

6. Dispose of the old battery properly at an appropriate facility or return it to the supplier in the packing material for the new battery. See the new battery instructions for more information.


Warning
	This equipment contains potentially hazardous voltages. Do not attempt to disassemble the unit. The only exception is for equipment containing batteries. Battery replacement using the procedures above is permissible. Except for the battery, the unit contains no user serviceable parts. Repairs are performed only by factory trained service personnel. The batteries in the equipment are recyclable. They contain lead and pose a hazard to the environment and human health if not disposed of properly. Return the battery to a factory authorized service center or refer to local codes for proper disposal requirements. CAUTION: Do not dispose of batteries in a fire. The batteries may explode. Do not open or mutilate batteries. They contain an electrolyte which is toxic and harmful to the skin and eyes. To avoid personal injury due to energy hazard, remove wrist watches and jewelry such as rings when replacing the batteries. Use tools with insulated handles. Replace batteries with the same number and type of batteries as originally installed in the equipment.