User's Manual

36 QL 420 User’s Guide
Preventive Maintenance
Extending Battery Life
• Never expose the battery to direct sunlight or tempera-
tures over 104° F (40° C).
• Always use a Zebra charger designed specifically for Li-
thium-Ion batteries. Use of any other kind of charger may
damage the battery.
• Choose the media that is easiest to “burn.” An authorized
Zebra re-seller can help you determine the optimum me-
dia for your application.
• If you print the same text or graphic on every label, con-
sider using a pre-printed label.
• Choose the correct print darkness, and print speed for
your media.
• Use software handshaking (XON/XOFF) whenever possi-
ble.
• Select Tear-Off mode whenever possible (Peel-Off mode
uses more power).
• If your printer has the optional LCD display, use the dis-
play backlight only when necessary. Turn it off whenever
it is not needed.
• Pull the battery out of the printer if the printer won’t be
used for a day or more and you’re not performing a main-
tenance charge.
• Consider purchasing an extra battery.
• Remember that any rechargeable battery will lose its abili-
ty to maintain a charge over time. It can only be re-
charged a finite number of times before it must be re-
placed.
• Don’t print while the LI 72 Wall Charger is plugged into the
unit. Unreliable battery charging can result.
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