Maintenance 5
Keysight U1251B and U1252B User’s and Service Guide 129
The steps for battery replacement are the next page:
1 At the rear panel, turn the screw on the battery cover from the LOCK to the
OPEN position (counterclockwise).
2 Slide down the battery cover.
3 Lift the battery cover up.
4 Replace the specified battery.
5 Reverse the above steps to close the cover.
NOTE
List of compatible batteries for the Keysight U1251B:
– 9 V Alkaline non-chargeable battery (ANSI/NEDA 1604A or IEC 6LR61)
– 9 V Carbon-zinc non-chargeable battery (ANSI/NEDA 1604D or IEC6F22)
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