Regulations will differ between airlines, aviation regulators, and different countries.
While all of them likely have battery restrictions, the exact details matter.
They’re light and offer the highest power density among battery technologies that are practical for consumer electronics.
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Related:How Do You Safely Store a Defective (Bulging) Lithium-Ion Battery?
However, these batteries can sufferfailuresthat result indramatic flame outs.
This is what happened with the infamous Samsung Galaxy Note 7 and many hoverboards sold on sites like Amazon.
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These larger batteries might have to be stored in a special hold managed by the cabin crew.
The number of batteries you may bring may also be limited.
For example, you might be limited to two 100Wh power banks per person.
High-end laptops will often have 99.9Wh batteries specifically since this is under the general limit that most airlines require.
Related:Why Do Lithium-Ion Batteries Explode?
