Ultratec 4425 - Manual (Page 75)

About the batteries
The Superprint 4425 runs on batteries when you unplug the AC
adapter or when the power fails. Fully-charged, the six AA
rechargeable NiCad batteries will provide 45 to 60 minutes of
normal use.
When the power light blinks, you have about 5 minutes of battery
power left. The batteries will last longer if you turn off the printer
when you use battery power.
Checking the batteries
The batteries lose their ability to hold a full charge if you keep the
Superprint 4425 plugged in all the time. If you want to be sure the
batteries stay fully-charged, check them once a month. Follow
these steps to check the batteries:
1. Unplug the AC adapter.
2. Turn on the Superprint 4425 for 30 minutes. (You can still use
it for calls during this time).
3. The batteries are fine if the power light still glows steadily
after 30 minutes. If the power light blinks within 30 minutes,
exercise the batteries.
4. Plug the AC adapter back in and turn off the Superprint 4425.
Exercising the batteries
1. Leave the Superprint 4425 on with the AC adapter unplugged
until the power light flashes.
2. Turn the unit off and plug in the AC adapter for 24 hours (you
can use the Superprint 4425 for calls during this time).
3. Unplug the AC adapter and leave the Superprint 4425 on for
30 minutes.
4. Repeat steps 1 to 3 until the power light glows steadily after
30 minutes without the AC adapter.
CARE & REPAIR • 73