Claimed runtime on 109 Turbo is 90 minutes. We achieved 84 minutes before the light dropped to Medium mode. The 25 lasted 2 hours 50 minutes on High. Acceptable variance given the cold testing temperature (5°C).
You can find a wide variety of these kits at major hobby retailers like HobbyTown or through specialized shops like CultTVman's Hobbyshop . polarlights casey set 109 25