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12.8.2 Battery Performance Checking
Check battery performance once every six months. Checking battery performance is also
required before ventilator repair is carried out or when battery is doubted to be the source for
ventilator failure. Battery performance may degrade over time.
Follow these steps to check battery performance:
1. Disconnect the patient from the ventilator and shut down the ventilator.
2. Connect the ventilator to the external power source and charge the batteries
uninterruptedly for at least 10 hours.
3. Disconnect the external power source. Allow the ventilator to operate on battery power
until the ventilator shuts off.
4. The running time of the battery reflects its performance.
If the running time of the battery is noticeably shorter than that stated in the specifications,
replace the battery or contact the service personnel.
NOTE
If the running time of the battery is too short after fully charged, the battery may
be damaged already or defective.
If obvious signs of damage are detected on the battery or the battery recharging
has failed, replace the battery and recycle it properly.
12.8.3 Battery Storage
During storing batteries, ensure the battery electrodes do not get in touch with metal. In case
of long-time storage, place batteries in a cool environment and keep battery power at 40% to
60%.
Placing batteries in a cool environment can delay battery aging. Ideally, batteries should be
stored in a cool environment of 15℃ (60℉). Do not store batteries outside the
environmental range of -20℃ (-4℉) to +60℃ (140℉).
Remove the batteries from the ventilator if the ventilator is not used for a long time. Failure
to do so will over-discharge the batteries and extend the battery charging time noticeably.
Fully charge the batteries once every 2 months and keep battery power at 40% to 60%. Fully
charge the batteries before use.
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