40 - 4 BeneVision N Series Patient Monitor Operator’s Manual
40.6 Maintaining the Battery
40.6.1 Conditioning the Battery
The performance of batteries deteriorates over time. You should condition the batteries every three months.
If the battery is not conditioned for a prolonged time, its charge indication may not be accurate and you may
wrongly evaluate the remaining battery runtime.
To condition a battery, follow this procedure:
1. Disconnect the monitor from the patient and stop all monitoring and measuring procedures.
2. Allow the battery to be charged uninterruptedly till it is fully charged.
3. Allow the monitor to run on the battery until the battery is completely depleted and the monitor automat-
ically shuts down.
4. Fully charge the battery again for use or charge it to 40 – 60% for storage.
• Do not use the monitor to monitor the patient during battery conditioning.
• Do not interrupt battery conditioning.
40.6.2 Checking Battery Performance
The performance of a rechargeable battery deteriorates over time. You should check the battery performance
every three months or if you doubt that the battery may fail.
See steps 1 to 3 of 40.6.1Conditioning the Battery to check battery performance. The operating time of the
batteries reflects their performance directly. If the operating time of a battery is noticeably shorter than that
stated in the specifications, the battery may reach its service life or malfunction.If the battery performance
meets the requirement, fully charge the battery again for use or charge it to 40 – 60% for storage.
• Battery operating time depends on equipment configuration and operation. For example, high
display brightness or measuring NIBP repeatedly will shorten the battery operating time.
40.7 Storing Batteries
When storing batteries, make sure that the battery terminals do not come into contact with metallic objects. If
batteries are stored for an extended period of time, place the batteries in a cool place with a partial charge of
40% to 60% capacity.
Condition the stored batteries every three months. For more information, see 40.6.1Conditioning the Battery.
• Remove the battery from the equipment if the equipment is not used for a prolonged time (for
example, several weeks). Otherwise the battery may overdischarge.
• Storing batteries at high temperature for an extended period of time will significantly shorten their
life expectancy.
• The battery storage temperature is between -5 °C and 35 °C. Storing batteries in a cool place can
slow the aging process. Ideally the batteries should be stored at 15 °C.
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