Maintenance
Extend the Life of the Battery
365
Extend the Life of the Battery
WWarningX
To prevent possible fire, electric shock, or personal
injury, read the warnings about the rechargeable
battery under Safety Information.
• 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.
• Storage temperature: 14 °F to 140 °F (-10 °C to +60 °C)
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