TCW IBBS Certified Backup Battery System - 12V 3Ah

The TCW Technologies Integrated Battery Back-up System (IBBS), part number IBBS-12V-3AH-CRT-V, is a certified 12 V, 3 Ah back-up power unit for aircraft electrical installations requiring a protected endurance supply for critical electronic loads.

The unit combines a sealed lithium iron phosphate (LiFePO4) battery pack, integral charging system, cell balancing, thermal monitoring and switching circuitry in one enclosure. It connects to the aircraft power bus and provides a stable back-up output during normal and emergency operating conditions. Manufacturer-stated surge and voltage-sag protection supports continuity of connected equipment during engine starting.

• Manufacturer part number: IBBS-12V-3AH-CRT-V
• System voltage: 12 V nominal
• Battery capacity: 3 Ah
• Battery: Internal sealed LiFePO4, nominal 12.8 V
• Charging input: 13.5–15 V DC
• Back-up output: 10–14 V DC
• Pass-through current: 5 A continuous; 10 A peak for up to 30 seconds
• Output current: 5 A continuous; 10 A peak transient load for up to 30 seconds
• Connector: Standard-density 15-pin male D-sub
• Enclosure: Sealed, externally vented cast aluminium; approximately 302 × 84 × 81 mm
• Operating temperature: −40 °C to +60 °C
• Certification stated by manufacturer: FAA TSO-C179(b)

Installation, configuration and continuing airworthiness must follow the applicable TCW Technologies instructions and the approval basis for the aircraft installation. The manufacturer provides an IBBS product page, technical documentation and installation instructions for the certified 3 Ah model.