Originally Posted by flushentitypacket
That would be an elegant solution from a user standpoint. But I'm guessing it would result in at least some, if not significant, power loss.
If it's a battery, can't it charge with a small amount of power anyway? Wouldn't lower power mean it just charges more slowly?
A more logical solution would be introducing a better standard for universal laptop power cables, but it is highly unlikely that this will come to pass as laptop PSUs are actually fairly decent money makers for most companies. You can see as much by checking how much a replacement laptop charger costs on eBay versus directly through the distributor.
Originally Posted by DuckieHo
Some laptops draw over 100w.... the highest-end Alienware M18x comes with a 230w power brick.
Actually, the Alienware m18x come spec'd with the 240w power supply in the lowest end specifications (non-extreme CPU, non-SLI/Crossfire). The high-end m18x's use a 330w PSU, which is would mean four USB3 cables which is even more absurd.
And, besides that, it does not even deal with the simple fact that being able to plug any charger into any laptop will lead to people plugging in chargers that WILL damage the system. So, another set of devices to add, or attempt to force everyone to use the same voltage.