Lithium battery air travel rules on SriLankan Airlines CMB domestic code-shares?
3 Answers from travellers
Cinnamon Air and domestic operators align strictly with IATA dangerous goods safety codes: all lithium-ion and lithium-polymer batteries must travel in carry-on cabin baggage packed in certified flame-retardant LiPo safety bags with terminal points insulated. Batteries under 100Wh require no operator pre-approval; packs between 100Wh and 160Wh require pre-notification and are capped at two spares per passenger. Loose batteries in checked baggage are confiscated during x-ray screening.
Discharge all drone flight batteries to storage voltage (around 30-40% state of charge) prior to boarding; domestic seaplane baggage holds experience high heat that can trigger thermal runaway in fully charged packs.
Check the wattage rating stamped on high-capacity power banks; security personnel at CMB domestic gates routinely turn away unlabelled generic packs.
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