https://blog.margrop.net/en/tag/travel-safety/ Recent content in Travel Safety on Margrop Blog Hugo -- gohugo.io en-US Wed, 29 Jul 2026 21:00:00 +0800 https://blog.margrop.net/en/post/power-bank-safety/ Wed, 29 Jul 2026 21:00:00 +0800 https://blog.margrop.net/en/post/power-bank-safety/ <blockquote> <p><strong>The short version</strong></p> <p>A power bank is not safe merely because it still charges a phone. Its safety depends on the cell, protection circuit, charger, enclosure, and environment working together. A bulging case, unusual heat, chemical odor, cracking, smoke, or intermittent charging is a stop-using signal—not a reason to “get a few more cycles out of it.”</p> <p>Swelling does not mean the pack will definitely explode in the next second. It does mean that something inside the cell has changed and should no longer be treated as normal. Squeezing, puncturing, opening, or continuing to charge a swollen pack can turn a warning into an emergency.</p> </blockquote>