Miles is somewhat correct, but only somewhat. First, yes, a power strip is designed to prevent excessive power from flowing trough it. They are rated up to varying degrees of protection, becoming more expensive the more protection they offer.
Now about the black box on your laptop charger. That is a rather complicated electrical circuit that takes AC wall power, turns it into smooth DC power (not a simple task to do correctly), and steps it down to a usable voltage by your computer. Quality chargers have minor overvoltage protection built in, but the vast majority DO NOT have the kind of protection that can hold out against something on the order of a lightning strike. Also, even if they did protect from it, chances are the charger itself would be destroyed. You know how power strips have an on/off switch, and a reset button (sometimes built in to the switch)? The reset part resets the protective breaker in the switch. These are not on the transformer blocks on laptop chargers because they aren't designed to withstand surges like that. Also, strips are way way cheaper than chargers.
IT Technician or 6 years