Maintenance and Modifications
EASA Approves Lithium-ion Main-ship Battery for EC135
TB30 or TB40 weighs up to 19.4 kg less than the original nicad system
Heli Austria Airbus EC135 helicopter
© Heli Austria

Heli Austria and Heli Werk are offering an EASA-approved upgrade to install a True Blue Power lithium-ion main-ship battery on Airbus EC135 helicopters. Heli Austria developed the supplemental type certificate, and Heli Werk makes the upgrade kit.

Both the True Blue Power TB30 and TB40 lithium-ion batteries are available for the upgrade, which reduces battery weight compared with the existing NiCad battery by up to 19.8 kg (about 44 pounds), depending on the battery configuration. The TB30 has a 30 amp-hour capacity, while the TB40 is a 40 amp-hour battery.

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