110 Agilent U1251A/U1252A User’s and Service Guide
5 Maintenance
The smart charging mode will start if the meter passes the
self- test. The charging time is limited to not more than 220
minutes. The secondary display will count down the charging
time. During charging, no buttons can be pressed. The error
message may appear during charging to alert any
overcharging of the battery.
Figure 50 Charging mode
••If the OL message appears while the battery is inside, do not charge the battery.
• If the C-Err message appears, check if the battery is the specified type. Use the
battery as specified in this guide. Ensure that the battery is the correct
rechargeable type before charging it again. After replacing with the correct
rechargeable battery, press SHIFT to perform the self-test again. If the C-Err
message reappears, replace with a new battery,
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