Lithium-ion Aircraft Battery

Part Number
6430044-2
Model Number
TB44
Manufacturer
Mid-Continent Instruments and Avionics
Technical Description
26.4 VDC, 46 Ah, Lithium-ion, TSO
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Product Description

Reduce your aircraft battery weight by 40% with the TB44 Advanced Lithium-ion Aircraft Battery. Less weight means more passengers, more cargo, more fuel and more design flexibility. The True Blue Power lithium-ion battery is TSO certified, offers 2-year maintenance intervals, and lasts 8 years — 4x longer than lead-acid and NiCad batteries. A built-in heater ensures superior cold weather performance, down to -40°C.

Get started with certified lithium-ion aircraft batteries

Start Lighter

True Blue Power batteries are the lightest and most compact, saving you up to 85 pounds per battery. Our efficient design gives you more power per pound than any other aircraft battery. Less weight means more passengers, more cargo, more fuel, and more design flexibility.

Start Faster

True Blue Power batteries give you cooler and faster engine starts, capable of 7 starts in 7 minutes. Turboprop engines, like the Pratt & Whitney PT6A, start in half the time and, typically, 100° cooler. Our sophisticated design allows your battery to fully recharge within 30 minutes and constant voltage helps eliminate hot starts. An automatic, built-in heater ensures your aircraft outperforms all others in extreme temperatures, from -40°C to +70°C.

Start Smarter

True Blue Power batteries feature overcharge, over-discharge, over-current, short circuit, over-temperature, and under-temperature protection. Even smarter, you’ll save time and money with the longest-lasting aircraft batteries on the market. True Blue Power batteries last 8 years. That’s up to 4x longer than lead acid and NiCad.

Certified Lithium-ion Aircraft Batteries
Benefits and Specifications
Benefits
Benefits
  • 46 amp-hour battery nominal at 23°C/73.4°F
  • Weighs 51.7 lbs. — 40% lighter than lead-acid or nickel-cadmium alternatives
  • Advanced Nanophosphate® lithium-ion cell chemistry — 3x the energy per kilogram when compared to lead-acid and nickel-cadmium cells
  • 7 engine starts in 7 minutes
  • 15 minutes for complete recharge when the battery is fully discharged on a typical aircraft
  • Superior performance in extreme temperatures (-40°C/-40°F to +70°C/+158°F)
  • Automatic internal heater
  • Overcharge, over-discharge, over-current, short circuit, over-temperature and under-temperature protection
  • Communicates ARINC 429 data to the cockpit
  • Higher voltage during engine start — Less wear, less maintenance and increased useful life
  • 2-year maintenance interval —50 – 90% savings on maintenance costs
  • Designed and built in Wichita, Kansas, USA
  • FAA TSO Certified
  • Two-year limited warranty
Specifications

Capacity
46 amp-hour nominal at 23°C/73.4°F

Charge Voltage
28 VDC nominal

Output Voltage
26.4 VDC nominal

Output Current
750 A continuous, 1500 A max

Technology
Advanced NanoPhosphate® lithium-ion cell chemistry

Protection
Overcharge, over-discharge, over-current, short circuit, over-temperature, under-temperature

Energy Density
52.0 Wh/kg (64.6 Wh/liter)

Operating Temperature
-40°C to +70°C (-40°F to +158°F)

Weight
51.7 lbs. (23.4 kg)

Dimensions
10.9” L x 11.7” W x 10.1” H

Configuration
8S19P; 8 series cells x 19 parallel modules

Maintenance
2-year maintenance interval; offers 50 – 90% savings on maintenance costs

Battery Life Expectancy
8 years (average)

Case
Powder-coated steel, blue

Certification
FAA TSO certified to C179a
ETSO certified to C179a
RTCA DO-311 qualified
RTCA DO-160G qualified
UNDOT/IATA qualified

Product Comparison

Model Number TB44 TB40 TB50
Part Numbers 6430044-2, 6430044-4 6430040-1, 6430040-2 6430050-1
Capacity 46 amp-hour nominal
(at 23°C/73°F)
40 amp-hour nominal
(at 23°C/73°F)
50 amp-hour nominal
(at 23°C/73°F)
Weight 51.7 lbs. (23.4 kg) 36.6 lbs. (16.7 kg) 43.9 lbs. (19.9 kg)
Charge Voltage 28 VDC nominal 28 VDC nominal 28 VDC nominal
Output Voltage 26.4 VDC nominal 26.4 VDC nominal 26.4 VDC nominal
Output Current 750A continuous (1500A max) 525A continuous (1500A max) 460A continuous (1500A max)
Recharge Time 15 minutes
to fully recharge when
battery is fully discharged
Configurable Charge
Current Limiting:
15 minutes to fully recharge
when configured for max
charge current
Configurable Charge
Current Limiting:
15 minutes to fully recharge
when configured for max
charge current
Dimensions 10.9" L x 11.7" W x 10.1" H 9.1" L x 14.4" W x 8.9" H 10.0" L x 9.6" W x 10.1" H
Protection Overcharge, over-discharge,
over-current, short circuit,
over-temperature and
under-temperature
Overcharge, over-discharge,
over-current, short
circuit, over-temperature,
under-temperature and
charge current limiting
Overcharge, over-discharge,
over-current, short
circuit, over-temperature,
under-temperature and
charge current limiting
Technology Advanced NanoPhosphate® lithium-ion cell chemistry Advanced NanoPhosphate® lithium-ion cell chemistry Advanced NanoPhosphate® lithium-ion cell chemistry
Energy Density 52.0 Wh/kg (64.6 Wh/liter) 63.2 Wh/kg (73.0 Wh/liter) 66.3 Wh/kg (83.1 Wh/liter)
Battery Life Expectancy 8 years (average) 8 years (average) 8 years (average)
Communication Serial, Discrete, RTD
(ARINC 429 data
to the cockpit)
Built-in Test (BIT) Indicator
ARINC 429, Analog,
Discrete, RTD
Built-in Test (BIT) Indicator
ARINC 429, Analog,
Discrete, RTD
Maintenance Two-year intervals On-Condition:
Service indicated
via Discrete output, LED
indication and ARINC 429
On-Condition:
Service indicated
via Discrete output, LED
indication and ARINC 429
Operating Temperature -40°C to +70°C (-40°F to +158°F) -40°C to +70°C (-40°F to +158°F) -40°C to +70°C (-40°F to +158°F)
Configuration 19P8S
1 parallel x 8 in series x 19
16P8S
4 parallel x 8 in series x 4
21P8S
7 parallel x 8 in series x 3
Case Powder-coated steel, blue Anodized aluminum, blue Anodized aluminum, blue
Connection MS3509 Quick Disconnect, Mil Circular for communications MS3509 Quick Disconnect, Mil Circular for communications MS3509 Quick Disconnect, Mil Circular for communications
Certification FAA TSO-C179a
ETSO-C179a
RTCA DO-311
RTCA DO-160G
UNDOT/IATA
FAA TSO-C179b (Class A-4B)
RTCA DO-311A
RTCA DO-160G
RTCA DO-178C DAL A
UNDOT/IATA
FAA TSO-C179b (Class A-4B)
RTCA DO-311A
RTCA DO-160G
RTCA DO-178C DAL A
UNDOT/IATA
Warranty Two-year (limited) Two-year (limited) Two-year (limited)
Certified Lithium-ion Aircraft Batteries
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