Gear & Tech
Lithium power banks fly in your carry-on only — here are the 100/160 watt-hour tiers, how to convert mAh to watt-hours, and the 2025 airline…
By Laxman Rawal · Aug 22, 2026
Pack this before you read the rest: every power bank and spare lithium battery must travel in your carry-on, never in checked luggage — and the limit that actually decides your day is written in watt-hours (Wh), not the milliamp-hours (mAh) printed on the…
Travel Himalaya Nepal · News
A lithium cell that overheats — a fault called thermal runaway — can climb to several hundred degrees and reignite even after it looks extinguished. In the cabin, a crew member with an extinguisher and water is metres away and trained for exactly this. In the…
Travel Himalaya Nepal · News
Aviation authorities rate batteries by energy — watt-hours — not by the marketing number on the label. The International Civil Aviation Organization (ICAO) and IATA set three bands that the FAA, EASA and national regulators all follow: Under 100 Wh — no…
Travel Himalaya Nepal · News
Your power bank shouts a number like "20,000 mAh," but security cares about watt-hours. The conversion is simple arithmetic: Wh = mAh ÷ 1,000 × 3.7 V — where 3.7 volts is the nominal voltage of a lithium-ion cell. So a 20,000 mAh bank is 20,000 ÷ 1,000 × 3.7…
Travel Himalaya Nepal · News
The rules tightened after a specific event. On 28 January 2025 an Air Busan Airbus A321 caught fire on the ground at Busan, South Korea; all 176 people on board evacuated with only minor injuries, and investigators tied the blaze to a power bank stored in an…
Travel Himalaya Nepal · News
On the trail, a big power bank stops being a luxury. Teahouse lodges in the Everest and Annapurna regions typically charge your devices by the hour for a fee, the sockets are shared, and higher up the electricity is solar and slow — so a 20,000 mAh bank (74…
Travel Himalaya Nepal · News
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