Passengers can carry portable lithium ion and lithium metal batteries in carry-on baggage. With airline approval, travelers can also bring up to two larger batteries (101-160 Wh) that weigh between 2-8 grams, complying with safety. . In response to safety concerns surrounding lithium-ion batteries, the TSA has stepped up enforcement and is paying closer attention to power banks during security screenings. “TSA has not 'banned' power banks. . It's not just the skies – your power bank can cause havoc in a hot car or even at home if you ignore basic safety. To help you holiday with some peace of mind and to cut through the boring technical jargon, I've put together this guide that breaks down exactly what you need to know for safe travels. . Portable chargers or power banks containing a lithium ion battery must be packed in carry-on bags. Power banks rated between 100 watt-hours (Wh) and 160Wh require airline approval.
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