[yellowapple]

> It’s important that the charger accepts an IEC C7 cable. This is an international standard, so you’ll be able to find local mains cables at office supply stores or borrow them from nearby appliances, and it’s a two-pin design. Having a two-pin mains lead means you don’t have to worry about finding three-pin (earthed) power outlets in areas where they are not yet universal. It also means that an ultra-compact travel adapter like the Road Warrior can serve as a backup option if you don’t have a local cable.

An earthed-to-unearthed adapter (preferably with some alternate path to ground) seems like a better solution there than restricting oneself to C7 and its 2.5A max current. And when the ground prong is available in the outlet, it's often a useful mitigation against the looseness of worn-out sockets (since it adds another area of support).

[anilakar]

> C7 and its 2.5A max current

If 250 W (in the absolute worst case, a 100 V .jp grid) is not enough for travel purposes, I have no idea what will satisfy your requirements.

[yellowapple]

I might need to power a lot of things simultaneously. I currently travel with a 6-port USB-C power adapter; while it doesn't blast max wattage over every single port (nor do I need it to quite yet), I'd be unsurprised if one that does eventually hits the market, at which point I'd be inclined to upgrade.

In any case, even for single-device power supplies, pretty much all of the 165W+ ones I have are grounded (either C5 or C13). This includes the one that came with my Framework 16 (which is my backup charger if I need to pack extra light or otherwise don't want/need that 6-port squid).