# SDR 3EJA20250904004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 27, 2025
- Submitted: September 4, 2025
- Operation: Air carrier
- Aircraft: [N744JS](https://openairdocs.org/aircraft/N744JS), registered now
- Make and model: Cessna 525B
- Registry model: [Cessna 525B](https://openairdocs.org/model/cessna-525b) (OpenAirDocs)
- Aircraft serial: 525B0304
- Aircraft time: 5,574 hours, 5,238 cycles
- System (JASC): [2432 · Battery/Charger System](https://openairdocs.org/jasc/2432)
- Part: Battery
- Part number: S35974
- Part serial: 41375195
- Condition: Failed
- Location: Zone 200
- Part time: 162 hours, 111 cycles
- Stage of operation: CL
- How discovered: V
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/3EJA20250904004

## Discrepancy

DURING THE CLIMB AT APPROXIMATELY 17,000 FEET, THE “BATT FAULT” MASTER WARNING ILLUMINATED. REMOVED BATTERY PN S3597-4 SN 41375195, CONNECTOR PN MS25182-2 SN 275750, TEMP SENSOR PN S3597-9 SN 40008583 AND INSTALLED NEW BATTERY PN S3597-4 SN 41463217, CONNECTOR PN MS2518-2 SN 275829, TEMP SENSOR PN S3597-9

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