MILPOWER SOURCE
110BA1UM, REV(B)
12
Charge-discharge Cycles
The number of times and the depth of battery discharges (during AC input failure) affects the
service life of the battery.
If the battery is allowed to discharge only to 50% of its charge, the number of charge-discharge
cycles (before it fails) will be three times the number of cycles had it been allowed to reach 30%
charge.
Battery life may be prolonged by limiting the operating time on battery power to the minimum
required by the system to perform an orderly shutdown.
7.2
Replacing the Battery Pack
For ease of use, the battery of the M110BA-1 is packaged within a Removable Battery Pack (MPS
P/N M357380) that may be ordered separately.
During storage, the Battery Pack may be removed and stored separately in a cooled ambient.
To remove the Battery Pack from the UPS:
a)
Turn OFF the Master ON/OFF switches.
b)
Disconnect J1 and J2 from the rear panel.
c)
Open seven screws on the battery’s rear cover.
d)
Open the Battery Connector access cover. Remove screws.
e)
Disconnect the connector by pulling upward.
f)
Unscrew the right battery’s screws on the top and three screws on the right side
of the UPS (marked by a B” on the top and recessed on the side).
g)
Hold the Battery Pack by the two edges on the sides (Caution: Two-man lift !!) and
lift it straight up.
To install a new battery:
a)
Lower the Battery Pack straight into its place (at the right side of the UPS). Verify that
the battery mating connector and harness (near the front panel) are not
damaged by the battery.
b)
Install the screws on the top and the right side without tightening them yet. After all
screws are in, torque them at 11 IN.LB for the #6 top screws and 22 IN.LB for the #8
side screws. Note: Suitable locking compound (Locktite 242, or similar) should be
applied to all screws.
c)
Connect the battery connector.
d)
Close the battery connector cover and tighten its screws (6.5 IN.LB).
e)
Close the battery’s rear cover and tighten its screws (6.5 IN.LB).
f)
Reconnect J1 and J2 to the rear panel.
The unit is now ready for operation.
Note: If the new battery is fully charged, press the Set-Battery-Charge-to-100%
Push-Button for ten seconds to set the charge level to full scale.
