<span id="INSERTION_MARKER">Laptops use switching power supplies, which can generate loads of electromagnetic interference. You'll likely see a lump on the DC output cable. That is a filter designed to suppress interference. Splicing into the DC cable could allow interference to escape and could affect the performance of the laptop or other devices in the vicinity. Also, the power adapter was designed for that specific length of cable, so extending it may affect the adapter's ability to properly regulate its output voltage.<span>
<span>You should be able to find a slightly longer 2 or 3 pin AC cable that will plug directly into the laptop adapter. Much safer and a far better solution.
I want to extend a laptop ac adapter by an inch or two (let's just assume it is for a good reason). If I soldered a small wire in between, used for small electronics, would that be sufficient? Or would that be dangerous? Or would that not allow enough electricity to flow through?
Something as small as this maybe?