Defibrillator support systems

Medtronic Battery Support 2: troubleshooting and error codes

The ServiceForge knowledge base holds 30 documented symptoms for the Medtronic Battery Support 2, with 37 ranked causes, 80 diagnostic checks with test points and expected values, and 29 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

Performance Inspection Procedure (PIP) setup verification patient safety

Ensure proper equipment calibration, workstation power grounding, and personnel qualifications before performing Performance Inspection Procedure on Battery Support System 2

Ranked causes

1. Test equipment lacking current calibration (common)
2. Workstation power not grounded (occasional)
3. Personnel insufficiently qualified (occasional)

First check

Inspect calibration labels on all PIP test equipment

Test point: Equipment being used for PIP
Expected: Current calibration label present, issued by certified facility

2 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Voltage measurement test failure or DISCARD LED lights

During voltage measurement test, DISCARD LED illuminates instead of A-READY LED, indicating device or power supply configuration error

Ranked causes

1. Reversed polarity connection between power supply and device (common)
2. Device failure or fault (occasional)
3. Incorrect dc power supply setting (common)

First check

Verify polarity of power supply connection

Test point: Device positive (+) battery pin and power supply positive (+) terminal
Expected: Positive connected to positive, negative to negative

2 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

A-READY LED does not light within 15 seconds patient safety

During I2C bus test, the A-READY LED fails to illuminate within the expected 15-second window.

Ranked causes

1. Battery I2C communication failure (common)
2. Device I2C bus communication failure (occasional)

First check

Verify A-READY LED lights within 15 seconds after pressing ENTER

Test point: A-READY LED
Expected: LED lights within 15 seconds

1 more check with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Event codes stored in log

Device displays event codes in Event Log; codes may indicate transient EMI, ESD, or errors

Ranked causes

1. Transient electromagnetic interference (EMI) (occasional)
2. Electrostatic discharge (ESD) (occasional)

First check

Unplug Battery Support System 2 from ac line power

Test point: ac line power connection
Expected: Device unpowered

3 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Voltage Measurement Test failure patient safety

Device fails to measure terminal voltage of installed batteries at discrete levels; DISCARD LED lights instead of A-READY LED within 15 seconds

Ranked causes

1. Reversed polarity connection between power supply and device (common)
2. Device failure or incorrect dc power supply setting (occasional)

First check

Verify polarity connection between power supply and device

Test point: Device positive (+) battery pin and power supply positive (+) terminal
Expected: Power supply positive terminal connected to device positive pin

3 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Battery connector pins bent, broken, or corroded patient safety

Battery connector pins exhibit visible damage including bending, breaks, corrosion, or wear

Ranked causes

1. Physical damage to connector pins (occasional)

First check

Visually examine each leaf on connector pins

Test point: battery connector pin leaves
Expected: No cracks or breaks visible

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Keypad Test patient safety

Verify front panel keypad responsiveness and LED illumination during Performance Inspection Mode

Ranked causes

1. Keypad not properly calibrated or keys not responding (unknown)

First check

Enter Performance Inspection Mode Keypad Test passcode

Test point: Front panel keys
Expected: Device momentarily illuminates all three ready legends, then continuously flashes all three charge LEDs (Test Number Entry Mode)

1 more check with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: LIFEPAK SLA I2C Test patient safety

Performance inspection procedure for battery support system battery cells using test mode

Ranked causes

1. Battery Well C requires testing (common)

First check

Test battery Well C shelf life

Test point: Well C test number 123-A
Expected: As per shelf life specification

3 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Low/Medium Current Discharge Test patient safety

Performance inspection procedure for Battery Support System 2 current discharge testing across three battery wells

Ranked causes

1. Well A, B, and C discharge validation required (unknown)

First check

Execute Low Current Discharge Test for Well A

Test point: Well A
Expected: Test number 221 (A-CONDITION, B-CONDITION, C-CONDITION)

7 more checks with pass and fail actions, 5 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Performance inspection mode tests patient safety

Verify device diagnostic tests: Power-On LED sequence, Keypad input, Fan operation, Battery I2C communication, Thermistor limits, Charge current levels, Discharge current levels

Ranked causes

1. Verification of system diagnostic capability (common)

First check

Power-On LED Test sequence execution

Test point: Front panel LEDs
Expected: All LEDs light in predetermined sequence
Tools: Visual inspection

6 more checks with pass and fail actions, 7 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Performance Inspection Procedure patient safety

Verify Battery Support System 2 functionality using specified test equipment

Ranked causes

1. Equipment setup and validation for PIP (unknown)

First check

Verify LIFEPARK NiCd battery availability

Test point: Test equipment inventory
Expected: Medtronic MIN 3009376 NiCd battery with fuel gauge present

4 more checks with pass and fail actions, 5 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Performance Inspection Procedure (PIP) patient safety

Equipment verification and workstation setup for PIP testing of Battery Support System 2

Ranked causes

1. Test equipment not properly calibrated (common)

First check

Verify test equipment has current calibration label

Test point: Test equipment
Expected: Current calibration label from certified calibration facility

2 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: PIP Test Equipment Requirements

Selection and verification of appropriate test equipment for Performance Inspection Procedure

Ranked causes

1. Incorrect or non-equivalent test equipment used (common)

First check

Verify test equipment meets specifications

Test point: Test equipment
Expected: Equipment listed in PIP Test Equipment Requirements or equivalent specifications

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: PIP Voltage Measurement high voltage

Performance Inspection Procedure voltage measurement test for battery support wells A, B, C using high and low voltage test numbers

Ranked causes

1. Routine calibration and verification procedure (unknown)

First check

Connect device to ac line power

Test point: ac line connection
Expected: Device powered and ready for test entry

3 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Thermistor Test patient safety

Performance Inspection Procedure test for thermistor function across three battery wells using LIFEPAK NiCd batteries

Ranked causes

1. Thermistor malfunction or battery failure (unknown)

First check

Install LIFEPAK NiCd battery in Well A

Test point: Well A
Expected: Battery installed

5 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Chassis leakage current exceeds acceptable limits patient safety

Safety analyzer measures excessive leakage current from battery wells during performance inspection procedure

Ranked causes

1. Leakage current fault in battery well circuitry (unknown)

First check

Measure chassis leakage current at battery well negative pin (normal mode)

Test point: Battery Well A negative (-) pin
Expected: less than 100 µa, <100 µa
Tools: Safety analyzer

1 more check with pass and fail actions are in ServiceForge. Connect ServiceForge to your AI

Chassis leakage current exceeds limit high voltage

Safety analyzer detects excessive leakage current from chassis to ground during performance inspection procedure

Ranked causes

1. Chassis insulation degradation or fault (unknown)

First check

Measure chassis leakage current (grounded analyzer)

Test point: Well A negative battery pin
Expected: less than 100 µa, < 100 µa
Tools: Safety analyzer

3 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Chassis leakage current out of specification high voltage

Measured leakage current exceeds acceptable limits during performance inspection procedure

Ranked causes

1. Chassis leakage current exceeds 100 µa (normal mode) or 300/500 µa (lifted ground mode) (unknown)

First check

Measure chassis leakage current in normal mode

Test point: Analyzer chassis clip to Well A negative battery pin
Expected: less than 100 µa, <100 µa
Tools: Safety analyzer

2 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Depleted battery insufficient for discharge test

Battery cannot supply required discharge currents to complete Low Current Discharge Test

Ranked causes

1. Battery depleted below minimum charge level (occasional)

First check

Verify battery charge state before discharge test

Test point: Test battery
Expected: Battery charged to operational level; able to supply required test currents

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Event code logged patient safety

Battery Support System 2 logs event codes when internal program or process fails to execute properly. Event codes have three digits derived from front panel LEDs, with first digit from battery Well A LEDs, second from Well B LEDs, third from Well C LEDs.

Ranked causes

1. Internal program or process failure (unknown)

First check

Derive event code from front panel LEDs

Test point: Well A, Well B, Well C LED indicators
Expected: Three-digit code where CHARGE=3, CONDITION=2, SHELF LIFE=1 for each well

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Event Log display and clear

Access and manage first five entries of the Event Log during performance inspection mode

Ranked causes

1. Review device event history (common)

First check

Event Log display access

Test point: Performance inspection mode menu
Expected: First five entries accessible

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Event Log is empty

No numerical codes are displayed in the Event Log and all three battery well LEDs remain off

Ranked causes

1. No events recorded (unknown)

Passcode entry timeout

Device DISCARD LEDs illuminate when passcode not entered within time limit

Ranked causes

1. Passcode entry exceeds 15 second window (occasional)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Reversed polarity connection detected caution

DISCARD LED illuminates during test setup, indicating polarity error in test connections

Ranked causes

1. Reversed polarity in test setup connections (common)

First check

Verify polarity of all test setup connections

Test point: Test battery terminals and lead connections
Expected: Positive to positive, negative to negative connections

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

SERVICE legend illuminates steadily

Front panel SERVICE legend illuminates steadily during power-up self test, indicating self-test failure detected

Ranked causes

1. Power-up self-test failure detected (unknown)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

SERVICE legend steady after self-test

Front panel SERVICE legend illuminates steadily, indicating power-up self-test failure

Ranked causes

1. Power-up self-test failure (unknown)

Smart battery pogo pins bent, broken, or corroded patient safety

Smart battery pogo pins show signs of damage or loss of spring function

Ranked causes

1. Physical damage or wear to pogo pins (occasional)

First check

Verify pogo pin free range of motion and spring action

Test point: smart battery pogo pins
Expected: Pin moves freely with visible spring action

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

View event codes from Battery Support System 2

Access stored event codes in the Event Log via power-up self-test mode to diagnose transient EMI or ESD events

Ranked causes

1. Transient EMI or ESD detected (occasional)

First check

Unplug Battery Support System 2 from ac line power

Test point: Power inlet
Expected: Device unplugged

3 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Voltage measurement test at high level

Voltage measurement test procedure for 15.6 V battery well measurement

Ranked causes

1. Standard calibration/measurement procedure (unknown)

First check

Set power supply output to high voltage level

Test point: DC power supply output
Expected: 15.6 ±0.1 V, ±0.1 V
Tools: DMM

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Voltage measurement test at low level

Voltage measurement test procedure for 4.0 V battery well measurement

Ranked causes

1. Standard calibration/measurement procedure (unknown)

First check

Set power supply output to low voltage level

Test point: DC power supply output
Expected: 4.0 ±0.1 V, ±0.1 V
Tools: DMM

3 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Error codes

Code	Meaning	Trigger	Severity
`101`	Shelf Life event - Position A	Self test or inspection mode triggers shelf life status check	warning
`102`	Condition event - Position C	Self test or inspection mode triggers condition check	warning
`102`	Shelf Life event with condition change	Self-test completion; keypad entry A-SHELF LIFE, B-None, C-CONDITION	unknown
`103`	Charge event - Position C	Self test or inspection mode triggers charge status check	warning
`103`	Shelf Life event with charge change	Self-test completion; keypad entry A-SHELF LIFE, B-None, C-CHARGE	unknown
`111`	Shelf Life event - Multiple positions	Self test or inspection mode triggers comprehensive shelf life check	warning
`111`	Process stack overflow	Software process stack grows beyond 20 levels	critical
`112`	Process stack underflow	Software process stack underflows	error
`112`	Shelf Life and condition change event	Self-test completion; keypad entry A-SHELF LIFE, B-SHELF LIFE, C-CONDITION	unknown
`112`	Condition event - Multiple positions	Self test or inspection mode triggers comprehensive condition check	warning
`113`	Event Log clear procedure	operator scrolls to code 113 and presses ENTER in Field Test Mode	info
`113`	Process not found in interrupt	Software process not found during interrupt handling	error
`121`	Serial buffer overflow	Serial communication buffer overflows	error
`122`	Open fuse or bad driver	Fuse open or driver circuit failure detected	error
`132`	HC11 CONFIG error	Microcontroller configuration error	error
`133`	System temperature fault	System temperature exceeds safe limits	error
`211`	RAM failure	Random access memory failure detected	critical
`212`	ROM failure	Read-only memory failure detected	critical
`213`	EEPROM failure	Electrically erasable programmable read-only memory failure	critical
`221`	Erroneous Op-Code	Invalid operation code detected during execution	critical
`222`	DAC failure	Digital-to-analog converter failure detected	error
`223`	Watchdog timeout	Watchdog timer expires without reset	critical
`231`	Erroneous IRQ	Invalid interrupt request detected	error
`232`	Discharge current not met	Battery discharge current below specified level	error
`233`	Charge current not met	Battery charge current below specified level	error
`DISCARD`	LED indication that appears during thermistor test	Thermistor test initiated with battery installed	warning
`DISCARD`	Thermistor test failure or battery failure indication	A-READY LED does not illuminate within 15 seconds or DISCARD LED illuminates	error
`DISCARD LED`	Device has detected an error condition during voltage measurement test	Reversed polarity connection between power supply and device or device failure	error
`DISCARD LED`	Reversed polarity connection detected in test setup	Reversed polarity connection anywhere in the test setup	warning

Likely causes and actions for each code are in ServiceForge. Connect ServiceForge to your AI

Community

0 fixes logged by technicians through their AI, with outcomes, for this model.

ServiceForge knowledge base record. Field-unverified unless technicians confirmed it. A teaching summary of the record, not a service manual. Export 2026-10-14.