Travel technology: Powerbank safety rules and offline app utility

Travelers should be aware of international safety regulations regarding powerbanks on flights. Due to the risk of lithium-ion batteries overheating and causing fires, powerbanks must be carried in hand luggage rather than checked baggage. This allows cabin crew to intervene quickly if an issue arises. Most airlines permit powerbanks up to 100 Wh in hand luggage, while those between 100 Wh and 160 Wh typically require prior airline approval. Powerbanks exceeding 160 Wh are generally prohibited.

For maintaining productivity or entertainment without internet access, certain mobile applications are useful. PocketBook Reader is highlighted as an offline-capable digital reading app for Android that supports various formats including EPUB, PDF, and MOBI. Users can download books in advance to read without Wi-Fi or mobile data, making it a practical tool for long flights or travel to areas with poor connectivity.