130 U1253B User’s and Service Guide
5Maintenance
Figure 5-5 Charging mode
7 The smart charging mode will start if the battery passes
the self- test. The charging time is limited to within
220 minutes. This ensures that the battery will not be
charged for more than 220 minutes. The display will
count down the charging time. When battery charging is
in progress, none of the push- buttons can be operated. To
avoid overcharging the battery, the charging may be
stopped with an error message during the charging
process.
• If the OVER LIMIT message is displayed, and there is a battery inside
the multimeter, please do not charge the battery.
• If the CHARGE ERROR message is displayed, check whether the battery
is the specified type. For the correct battery type, refer to “List of
compatible batteries for the Agilent U1253B :” on page 125. Please
ensure that the battery in the multimeter is the specified type of
rechargeable battery before charging it. After replacing any wrong
battery with the correct specified type of rechargeable battery, press
to redo the self-test. Replace with a new battery if the CHARGE
ERROR message is again displayed.