Technical data

Maintenance 5
Agilent U1251B/U1252B User’s and Service Guide 97
Charging the Battery
This meter is powered by a 7.2 V NiMH rechargeable battery.
Use the specified accessory, the 24 V DC adaptor to charge
the battery. Remember never to turn the rotary switch of
the meter when its battery is being charged. Use the
following procedures to charge the battery:
1 Remove and disconnect the test leads from the meter.
2 Turn the rotary switch to the position. Connect
the power cord to the DC adapter.
3 Plug the Red (+)/ Black (- ) banana terminals of the DC
adapter to the and the “COM” terminals
WARNING
Never discharge the battery by shorting it or by reverse polarity in any
subjects. Make sure the battery is the rechargeable type before charging
it. Never rotate the rotary switch when the battery is being charged as DC
at 24 V is being applied to the charging terminals.
CAUTION
• Do not rotate the rotary switch from position when
charging the battery.
• Perform battery charging only with 7.2 V or 8.4 V NiMH
rechargeable battery, 9 V size.
• Disconnect test leads from all the terminals when charging
the battery.
• Ensure proper insertion of battery in the multimeter, and follow the
correct polarity.
NOTE
For the battery charger, the mains supply voltage should not fluctuate by
plus or minus 10%.