Chapter 20: Maintenance
Extend the Life of the Battery
595
Extend the Life of the Battery
WWarningX
To prevent possible fire, electric shock, or personal
injury, read the warnings about the rechargeable
battery under “WSafety Information” on page 6.
Do not frequently let the battery discharge completely.
Do not keep the battery at temperatures below -20
o
C (-4
o
F)
or above +50
o
C (+122
o
F) for periods longer than one week.
Before you put a battery into storage, charge it to
approximately 50 % of full charge.
Store the Tester
Before you store a tester or an extra battery for a long period,
charge the battery to approximately 50 % of full charge. The
discharge rate of the battery is 5 % to 10 % each month.
Check the battery every 4 months and charge it if necessary.
Keep a battery attached to the tester during storage. If you
remove the battery for more than approximately 24 hours,
the tester will not keep the correct time and date.
See “Environmental and Regulatory Specifications” on page
601 for storage temperatures.
Remove the Battery
Figure 211 shows how to remove the battery.
Notes
If you remove the battery and do not connect the
ac adapter, the clock keeps the current date and
time for a minimum of 4 hours.
The screw does not come out of the battery door.
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