what is it?
The Sikorsky Firefly is an all-electric helicopter built for research purposes by Sikorsky Aircraft. It has been called the world's "first all-electric helicopter". The Firefly is a modified Sikorsky S-300C helicopter with its engine replaced by an electric motor and two lithium-ion battery packs.
spec sheet
- first flight
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- number built
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- role
- light experimental electric helicopter
- makers
- Sikorsky Aircraft Corporation
- engines
- electric
- top speed
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- range
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Specs are for the version in the Wikipedia article's specification section. Blank means the sources don't say.
Sources: Wikidata Q7513884, Wikipedia: Sikorsky Firefly (CC BY-SA 4.0).Updated 2026-10-24.