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AVIATION / Avionics & electrical / REVIEWED 2026-09-11

D07Aircraft batteries

Store electrical energy for designated aircraft functions.

Manufacturers & products

An aircraft battery is an approved installation with cells, enclosure, charging, monitoring and fault containment. Similar amp-hour ratings do not make different chemistries interchangeable.

Program applicability is stated for each listing. 737NG, 737 MAX, and other aircraft examples are distinct configurations; listed products are not automatically interchangeable or approved for installation.

manufacturer

Saft

ULM Ni-Cd and Li-ion aircraft batteries

Makes aircraft starting and emergency-power battery systems with manufacturer-supported distributor and repair channels. [1]

Program / application

Commercial-aircraft capability; exact 737 battery variant unverified [1]

Published manufacturing site: France and United States — published aviation production network

Custom program inquiry

Contact the manufacturer or aircraft OEM for the applicable approved program and configuration. This is an inquiry route, not an assertion of stock, price or installation eligibility.

Product scope & qualifications

Production network is not the origin of every battery SKU.

View product & inquiry route

manufacturer

Concorde Battery Corporation

RG-380E/44 series

Valve-regulated AGM lead-acid turbine starting/emergency battery family. [2]

Program / application

Other aircraft/general turbine battery; 737 applicability unverified [2]

Company location: West Covina, California, United States

Manufacturer inquiry

Contact the manufacturer or aircraft OEM for the applicable approved program and configuration. This is an inquiry route, not an assertion of stock, price or installation eligibility.

View product & inquiry route

manufacturer

True Blue Power / Mid-Continent Instrument

TB44

Integrated lithium-ion aircraft battery with protection and monitoring. [3]

Program / application

Other aircraft; 737 applicability unverified [3]

Manufacturer inquiry

Contact the manufacturer or aircraft OEM for the applicable approved program and configuration. This is an inquiry route, not an assertion of stock, price or installation eligibility.

View product & inquiry route

manufacturer

GS Yuasa

787 lithium-ion aircraft battery

Manufacturer identifies battery use on the Boeing 787, providing a widebody program reference. [4]

Program / application

Other aircraft — 787; no 737 applicability established [4]

Custom program inquiry

Contact the manufacturer or aircraft OEM for the applicable approved program and configuration. This is an inquiry route, not an assertion of stock, price or installation eligibility.

View product & inquiry route

What remains unverified

Specific 737NG battery effectivity and equivalent-condition discharge curves were not established in this set.

Where it comes from

A company address is shown separately from a published factory location. Request the manufacturing site and lot traceability for the exact part when sourcing.

What to compare

Chemistry and architecture
Cell chemistry changes charging, failure response and maintenance.
Rated capacity and test rate · Ah
Compare capacity at the same discharge rate, temperature and end voltage.
Voltage window · VDC
Nominal output differs from required charging and minimum usable voltage.
Starting versus standby duty · A / min
High current capability and emergency endurance are different objectives.
Temperature behavior · °C
Assess cold start, hot soak, heaters and end-of-life performance.
Protection and containment
Review monitoring, venting, isolation and approved failure containment.
Installed mass and envelope · kg / mm
Include tray, cables, charger and containment hardware.
Maintenance and effectivity
Check capacity checks, life limits and approved aircraft configuration.

Selection & integration notes

Battery endurance must be calculated from the approved essential-load profile, usable capacity and environmental conditions.

Published product examples

2 REFERENCES

Specifications belong to the named product and configuration.

RG-380E/44 polypropylene variantConcorde Battery Corporation

Nominal voltage: 24 V[2]RG-380E/44 series.
Rated capacity: 42 Ah[2]C1 rate; product name /44 is not the rated Ah value.
Maximum mass: 86.0 lb / 39.0 kg[2]RG-380E/44 polypropylene container; metal variants are heavier.

AGM lead-acid example; installation eligibility must be checked separately.

Example sources [2]

TB44True Blue Power / Mid-Continent Instrument

Nominal capacity: 46 Ah[3]At 23°C / 73.4°F; comparison table identifies 1C rate.
Nominal output: 26.4 VDC[3]Separate from 28-VDC nominal charge voltage.
Nominal charge voltage: 28 VDC[3]Per manufacturer flier.
Mass: 51.7 lb / 23.4 kg[3]Battery assembly in cited flier.

Do not call this a 44-Ah, 24-V battery based on its model name or interchange it with Ni-Cd/lead-acid without approved integration.

Example sources [3]

Sources & references

REVIEWED 2026-09-11

Manufacturer pages and technical documents support the linked claims. A review date is not a publication date or stock check.

Aviation Saft · Publication date not stated
Ni-Cd and Li-ion aircraft batteries; French/US manufacturing network and authorized support channel. Search-indexed primary text read; direct opening intermittently failed.
Accessed 2026-09-10
RG-380E/44 Series Specifications Concorde Battery Corporation · Publication date not stated
24-V lead-acid family, C1 capacity and container-specific maximum mass.
Accessed 2026-09-10
TB44 Advanced Lithium-ion Battery True Blue Power / Mid-Continent Instrument · Publication date not stated
TB44 nominal capacity at temperature, output/charge voltages and mass.
Accessed 2026-09-10
Powering what matters GS Yuasa · Publication date not stated
Current manufacturer page describes Boeing 787 battery use; no 737 claim.
Accessed 2026-09-10