[berty6294]

The Surface RT comes with a 24W power supply. The Surface Pro comes with the 48W power supply. Will the 48W power supply charge my Surface RT faster or is the extra wattage just for the usb port on the power supply?

[vedichymn]

Not gonna charge it faster. You can use the RT power supply on the Surface Pro though, it'll just charge it slower.

[stephen_az]

I would strongly suggest checking with Microsoft on this one. They have conflicting information on the Surface page and Microsoft Store page. One says they are each compatible with both devices and the other states explicitly that the 24W adapter is exclusively for RT and 48W is exclusively for Pro.

[inteller]

it doesn't matter, I've analyzed the carge process with a Kill a watt and the wattage drops as the battery gets charged to capacity. It is going to take the same amount of time because the surface backs off the charge.

[ttxzee]

the 48W charger works for RT but I don't think it'll change the charging speed. Pro has a 48w charger because it requires more power when being used.. so for the battery to still charge more power need to be supplied.. advantage of using 48w charger with RT is the extra USB power port and extended power cord.

[johninsj]

The Surface RT comes with a 24W power supply. The Surface Pro comes with the 48W power supply. Will the 48W power supply charge my Surface RT faster or is the extra wattage just for the usb port on the power supply?

Actually, yes it will work (Surface battery | Surface power | Recharge Surface), and yes it will charge faster (although the post doesn't mention it, I am pretty sure it was covered in the recent Reddit AMA with the surface pro folks I am Panos Panay with the Surface Windows 8 Pro Engineering Team AMAA. : IAmA)

[rmouh]

Will the Surface RT car charger work for the Surface Pro and just take longer or are there other issues?