Aircraft battery Gen5 TB50

lithium-ion26.4Vhigh-performance

Product description
The Gen5 TB50 Lithium-ion Aircraft Battery is a same-size replacement for standard 44 amp-hour aircraft batteries, delivering 50 amp-hour nominal at 23°C with significantly lower mass, integrated thermal control and on-condition maintenance via a built-in BIT. TSO-certified and designed for extreme temperatures from -40°C to +70°C, it provides higher starting voltage, reduced starter wear and extended service life. Manufactured by Mid-Continent Instruments and Avionics (True Blue Power) in Wichita, Kansas, USA. Typical service life: 8 years. Automatic internal heater and two-year limited warranty.

Benefits

• Direct same-size replacement for standard 44 Ah batteries with increased usable capacity and reduced weight.
• Lightweight: 44.3 lb (20.1 kg) — up to 50% lighter than lead‑acid or NiCad solutions.
• 50 amp-hour nominal capacity at 23°C (73°F).
• Proprietary lithium‑ion cell chemistry optimized for aviation applications.
• Higher voltage during engine start — less starter wear, lower maintenance and longer life.
• Wide operating temperature range: -40°C to +70°C (-40°F to +158°F) with automatic internal heater for cold starts.
• High energy density: 66.3 Wh/kg (83.1 Wh/liter).
• Comprehensive protection suite: overcharge, over-discharge, over-current, short circuit, over-temperature, under-temperature and charge-current limiting.
• Communication: ARINC 429, Analog and Discrete interfaces for integration with aircraft systems.
• Built-in Test (BIT) indicator provides real-time state-of-charge and state-of-health for condition-based maintenance.
• On-condition maintenance reduces unnecessary removals and downtime.
• FAA TSO certified and built in Wichita, Kansas, USA.

Benefits / Key Features (summary)

• Compact, lightweight Gen5 TB50 design as a drop-in replacement for 44 Ah batteries.
• Fast recharge capability and improved engine-start performance.
• Integrated battery management and diagnostics (BIT) enabling condition-based maintenance.

Technical specifications

• Part Number: 6430050-1
• Model Number: Gen5 TB50
• Manufacturer: Mid-Continent Instruments and Avionics (True Blue Power)
• Technical Description: 26.4 VDC, 50 Ah, 44.3 lb (20.1 kg), Lithium‑ion, TSO
• Capacity: 50 amp-hour nominal (at 23°C / 73°F)
• Charge Voltage: 28 VDC nominal
• Output Voltage: 26.4 VDC nominal
• Output Current: 460 A continuous (1500 A max)
• Technology: Lithium‑ion cell chemistry
• Energy Density: 66.3 Wh/kg (83.1 Wh/liter)
• Charge Current Limiting: Programmable up to 8C or unlimited
• Operating Temperature: -40°C to +70°C (-40°F to +158°F)
• Weight: 44.3 lb (20.1 kg)
• Dimensions: 10.0" L x 9.6" W x 10.1" H
• Configuration: 21P8S; 7 parallel x 8 in series x 3
• Battery Life Expectancy: 8 years (average)
• Maintenance: On-condition
• Case: Anodized aluminum, blue
• Certifications: FAA TSO‑C179b (Class A-4B); RTCA DO‑311A; RTCA DO‑160G; RTCA DO‑178C DAL A; UN/DOT/IATA
• Warranty: Two-year limited warranty