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Manufacturer
Model
What This Guide Helps With
BATTERY LOW ! alarm indicating loss of mains power with battery below 20%, creating risk of device shutdown, loss of ventilation, and interruption of anesthesia delivery.
Step-by-Step Troubleshooting
Ensure Patient Safety First
- Immediately confirm patient ventilation
- Switch to manual ventilation if needed
- Move patient to backup device if stability is uncertain
Verify the Reported Alarm and Behavior
- Confirm BATTERY LOW ! alarm is displayed
- Check if unit is unplugged from mains power
- Observe battery indicator level (<20%)
- Look for additional power-related alarms
Check Mains Power Connection
- Ensure power cord is securely connected to device and outlet
- Inspect for loose or partially disconnected cable
Verify Wall Outlet Functionality
- Test outlet with another device
- Try a different known working outlet
Check Power Indicators on the Machine
- Confirm AC power indicator is illuminated
- Verify battery charging indicator is active
Inspect Power Cord and Plug
- Check for damage, fraying, or bent prongs
- Replace with a known good cord if needed
Allow Battery to Charge
- Keep unit connected to AC power
- Monitor battery level increasing above alarm threshold
Evaluate Battery Performance
- Confirm battery percentage increases over time
- Check if battery holds charge
- Identify signs of battery degradation
If the Problem Persists
If external causes such as power connection, outlet, and cord are verified and the alarm remains:
- Remove the device from service
- Label as Out of Service
- Send for repair or battery replacement
Clinical Use Tip
Never troubleshoot on an active patient. Move the patient to a backup device before performing any troubleshooting.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Unit alarming BATTERY LOW ! with loss of mains power indication during setup."
Cause
What was observed during troubleshooting.
Example:
"Power cord disconnected from outlet or battery failed to charge despite confirmed AC power."
Resolution
What action was taken.
Example:
"Reconnected to working outlet and confirmed charging or removed from service for battery replacement."
Helpful Details to Include (If Known)
- Alarm behavior
- Accessories swapped
- Power behavior
- Environmental factors
- Indicator lights
- Final device status
Final Thought
Power-related alarms are critical on anesthesia machines. Always restore mains power first and verify battery health to prevent unexpected shutdowns and patient risk.
That is successful troubleshooting.