Lithium batteries, despite their CE marking, are subject to boarding restrictions. These restrictions are due to their possibile instabilities caused by sudden temperature and pressure changes, which is why, according to international standards, batteries have to be stowed in a protective pack (like a backpack, a bag or a box) and have to be carried into aircraft cabins. Stowing them in hold baggage is strictly forbidden.
Limitations apply to the battery’s power Wh (Watt), which is the result of Volt x Ah (Ampère). Amp measurement is printed on the side (see illustration below).
IATA (International Air Transport Association) has set Watt upper limit to:
-300 Wh for a single battery
-160 Wh (each) for two batteries
However, IATA itself leaves limitation policies up to the airline companies. The upper limit is often set at 100 Watt, however it’s better for the passenger to check the airlines policy regarding the matter.
– PLUS Battery (418 Wh)
– SLIM Battery(218 Wh)
– FLY Battery (90 Wh)