Economical, Reliable Emergency Power Solution for Legacy 450/500 and Praetor 500/600 Aircraft

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Reduce maintenance, downtime, and battery replacement costs with the True Blue Power® TS56 Emergency Power Supply.

September 25, 2026

West Star Aviation, in partnership with Mid-Continent Instruments and Avionics, is helping Embraer Legacy 450/500 and Praetor 500/600 operators address important maintenance and aircraft availability concerns regarding the standby emergency power supply battery.

The True Blue Power® TS56 Emergency Power Supply provides operators with a modern, cost-effective alternative to the original OEM battery system. West Star Aviation serves as a Mid-Continent dealer for these emergency power supplies, providing operators with access to both the equipment and the installation expertise of West Star’s experienced Embraer teams.

A Direct Replacement for Legacy OEM Batteries

The TS56 Emergency Power Supply is designed as a direct replacement for OEM-installed batteries P/N 6450LS-00 and 7450LS-00, providing operators with a straightforward path to more modern battery technology.

Operators do not necessarily need to replace both emergency batteries simultaneously. The units can be replaced one at a time, provided the second existing battery remains in airworthy condition.

That flexibility allows operators to address battery replacement based on aircraft condition and maintenance requirements rather than unnecessarily replacing a serviceable unit.

Moving Beyond Traditional NiCad Technology

The TS56 replaces traditional nickel-cadmium (NiCad) battery technology with a modern nickel-metal hydride (NiMH) solution. The original article identified improved reliability and simplified maintenance as two of the primary benefits of the newer technology.

One significant advantage is the elimination of the memory effect associated with traditional NiCad batteries. Memory effect can negatively impact usable battery capacity over time, adding another maintenance consideration for operators.

Eliminating this characteristic helps improve battery reliability while reducing maintenance requirements that can affect aircraft operational readiness.

Reduced Maintenance Requirements

Another significant operator benefit is the extended capacity-check interval.

The original OEM system requires an annual capacity check, while the TS56 requires a capacity check only once every two years.

For operators, that can mean:

Fewer scheduled battery maintenance events
Reduced maintenance labor
Less aircraft downtime
Improved operational availability
Lower long-term maintenance costs

The TS56 also uses aircraft power to recharge and maintain battery readiness, helping ensure the emergency power supply remains fully charged and available when required.

Simple Installation with STC Data Included

The compact, lightweight TS56 is engineered for straightforward installation and maintenance. The system provides easy installation, simplified maintenance access, and rapid field replacement.

The STC data package is included with the purchase of the batteries, further simplifying the process for operators planning the modification.

Combined with the direct-replacement design, this provides an efficient upgrade path without turning a battery replacement into an extensive aircraft modification.

An Economical Alternative

In addition to the maintenance and reliability advantages, the TS56 offers an attractive economic benefit.

The replacement power supplies are priced at approximately half the cost of the OEM emergency power supply, providing operators with an opportunity to address an obsolescence and reliability concern while controlling maintenance expense.

The combination of lower acquisition cost, reduced capacity-check requirements, and simplified replacement can provide meaningful savings throughout the aircraft’s operating life.

Installation Across the West Star Network

West Star Aviation locations can perform the installation, giving Legacy and Praetor operators flexibility when planning the modification. The upgrade can also be incorporated into a scheduled maintenance event to further minimize aircraft downtime.

As a Mid-Continent dealer, West Star can support customers throughout the process — from equipment procurement and applicability review through installation, documentation, and return to service.

West Star Aviation: Embraer Authorized Service Center

West Star Aviation, an Embraer Authorized Service Center, brings extensive experience supporting Embraer aircraft across avionics, electrical systems, STC installations, troubleshooting, maintenance, interiors, and exterior paint.

That broad aircraft knowledge is particularly valuable when evaluating upgrades such as emergency power supplies. Rather than simply replacing a component, West Star’s Embraer specialists can help operators evaluate aircraft configuration, maintenance requirements, installation timing, and opportunities to combine work with other scheduled events.

A Smarter Emergency Power Solution

For Legacy 450/500 and Praetor 500/600 operators, the True Blue Power TS56 provides a practical alternative to traditional OEM emergency batteries with several important advantages:

Direct replacement for OEM P/N 6450LS-00 and 7450LS-00
Ability to replace batteries individually when the second unit remains airworthy
Modern NiMH battery technology
Elimination of NiCad memory effect
Capacity checks required every two years rather than annually
Reduced maintenance and downtime
Improved operational readiness
Approximately half the cost of the OEM power supply
STC data package included with battery purchase
Installation support throughout the West Star Aviation network