Know before you travel to avoid a hold-up at baggage check.

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While I was traveling a few months ago, TSA pulled my backpack aside at security after it went through the scanner. I was baffled. As it turned out, I was carrying five power banks I was testing and had forgotten to remove them. All was fine once they inspected and saw what they were, but it was a reminder that some electronics can raise red flags.

To begin with, portable power banks have to be brought on the plane with you in your carry-on luggage and can't be stored in your checked luggage. Electronics like smartphones, tablets, laptops, and handheld gaming systems must travel with you. At a minimum, take laptops out of your bag for the security scan, and consider removing other electronics as well to avoid red flags. Specific rules apply to items with lithium batteries, both installed and uninstalled, along with other tech items you might want to travel with.…