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Replacing the Battery
This UPS has an easy to replace hot-swappable battery.
Note: Please read the cautions in the APC Safety Guide.
Replacement Batteries
See your dealer or call the number in this manual for information on replacement
battery kits. For 280 and 420 models, order RBC 2. For 650 models, order RBC 4.
Battery Replacement Procedure
Battery replacement is a safe procedure, isolated from electrical hazards. You may
leave the UPS and loads on for the following procedure.
Note: Once the battery is disconnected, the loads are not protected from
power outages.
1. Lay the UPS on its left side. Remove the two screws holding on
the battery door and open the door.
Note: It may be necessary to pull the battery door slightly
toward the front of the unit in order to open the door fully.
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 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. Place the new battery in the UPS. Use care to avoid pinching the
wires.
6. Close the battery compartment door and replace the screws.
7. Dispose of the old battery properly at an appropriate recycling
facility or return it to the supplier in the packing material for the
new battery. See the new battery instructions for more
information.
Troubleshooting
Problem Possible Cause Solution
UPS will not turn on. On/off/test button not pushed. Press the on/off/test button to
power the UPS and the loads.
UPS input circuit breaker
tripped.
Reduce the load on the UPS
by unplugging equipment and
reset the circuit breaker by
pressing the plunger back in.
UPS will not turn on or off. Computer interface problem. Disconnect the computer
interface. If the UPS now
works normally, check the
interface cable and the
attached computer.
UPS operates on-battery even
though normal line voltage is
thought to exist.
UPS's input circuit breaker
tripped.
Reduce the load on the UPS
by unplugging equipment and
reset the circuit breaker by
pushing the plunger back in.
UPS beeps occasionally. Normal UPS operation. None. The UPS is protecting
the load.
UPS does not provide
expected back up time.
The UPS's battery is weak due
to recent outage or is near the
end of its service life.
Charge the battery. The UPS's
batteries require recharging
after an extended outage.
Batteries age faster when put
into service often and when
operated at elevated
temperatures. If the battery is
near the end of its service life,
consider replacing the battery
even if the replace battery
indicator is not yet lit.
On-line and overload indicators
are flashing alternately.
The UPS was shutdown by
PowerChute® plus software.
None. The UPS will restart
automatically when utility power
returns.
All indicators are flashing. Internal UPS fault. Do not attempt to use the UPS.
Turn the UPS off and have it
serviced immediately.
The UPS operates normally,
but the site wiring fault
indicator is lit.
Building wiring error such as
missing ground or hot to
neutral wire reversal.
Have a qualified electrician
correct the building wiring.
On-line and on-battery
indicators only are flashing
Internal UPS fault. Do not attempt to use the UPS.
Turn the UPS off and have it
serviced immediately.
All indicators are off and the
UPS is not operating.
The UPS is shutdown and the
battery is discharged from an
extended power outage.
None. The UPS will return to
normal operation when the
power is restored and the
battery has a sufficient charge.
The replace battery light is
illuminated.
Weak batteries. Allow the batteries to recharge
for at least 4 hours. If the
problem persists after
recharging, replace the
batteries.
Replacement batteries not
connected properly.
Confirm the battery
connections.
The overload light is
illuminated or flashing
The UPS is overloaded. Reduce the load on the UPS
by unplugging equipment.
For Computer Interface Port Specifications, see the APC Website.