Keysight U1252B - Storage Considerations; Figure 5-1 9 V Rectangular Battery

5 Maintenance
130 Keysight U1251B and U1252B User’s and Service Guide
Figure 5-1 9 V rectangular battery
Storage considerations
After the first charge, it is recommended that you fully charge the battery
periodically, even when it is not in use. This is because the Ni-MH rechargeable
battery pack may drain with time.
NOTE
List of compatible batteries for the Keysight U1252B:
– 9 V size 300 mAH Ni-MH rechargeable battery, 7.2 V nominal voltage
– 9 V size 250 mAH Ni-MH rechargeable battery, 8.4 V nominal voltage
– 9 V Alkaline non-chargeable battery (ANSI/NEDA 1604A or IEC 6LR61)
– 9 V Carbon-zinc non-chargeable battery (ANSI/NEDA 1604D or IEC6F22)
CAUTION
To avoid instrument damage from battery leakage:
– Always remove dead batteries immediately.
– It is recommended that the battery is removed and stored separately if
the multimeter is to be unused for long periods of time.
NOTE
The performance of the rechargeable battery may degrade with time.