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What This Guide Helps With
Error 120.4620 indicating low battery voltage during charging, causing failure to charge or loss of battery backup power.
Step-by-Step Troubleshooting
Ensure Patient Safety First
- Remove the pump from patient use if battery backup is unreliable
- Transfer infusion to a functioning device if needed
Verify the Reported Error and Behavior
- Power on the pump and connect to AC power
- Confirm Error 120.4620 is displayed
- Check if battery does not charge or remains critically low
- Observe if pump shuts off when unplugged
- Note when the error occurs (startup, during use, intermittent)
Check AC Power Source
- Plug the pump into a known working outlet
- Test outlet with another device
- Ensure proper hospital-grade power source
Inspect Power Cord and AC Inlet
- Ensure power cord is fully seated at pump and outlet
- Inspect for damage or fraying
- Check for loose or intermittent connection
Confirm Charging Indicators
- Observe battery icon and charging indicators
- Check if no charging indication is present
- Check if charging appears but battery percentage does not increase
Perform Power Cycle
- Disconnect AC power and power down the pump
- Wait 30–60 seconds
- Reconnect AC power and restart
Test Battery Function
- Allow brief charging period if possible
- Disconnect AC power and observe operation
- Check if pump shuts off immediately
- Check if battery level improves
Consider Battery Age and Usage
- Evaluate battery age and service history
- Consider frequent deep discharges
- Assess long-term storage without charging
If the Problem Persists
If Error 120.4620 continues after external checks, battery failure or internal charging circuitry issues are likely.
- Remove the pump from service
- Label as Out of Service
- Send for battery replacement or further repair
Clinical Use Tip
Never troubleshoot on an active patient. Always move the patient to a backup device before addressing battery or power issues.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"BD Alaris pump displaying Error 120.4620 with battery not charging and shutting off when unplugged."
Cause
What was observed during troubleshooting.
Example:
"Battery unable to reach proper voltage during charging, consistent with battery degradation or charging failure."
Resolution
What action was taken.
Example:
"Verified AC power source and connections. Error persisted. Removed pump from service and sent 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 errors directly affect infusion reliability. Always rule out simple external causes first, then escalate appropriately when battery or charging failure is indicated.
That is successful troubleshooting.