The 15" uses an 85W charger and the 13" uses a 60W. Will the 85W work on a 13"? I wouldn't try it - although I have heard of folks using the 60W adapter on a 15": it's just supposed to be slower to charge.
The adapters aren't that expensive - I'd just get what Apple specifies for your computer.
Alex Can wrote:
Please help, I want to know, did MacBook 15" charger can use to MacBook 13"?
Yes. There will be no issues, & it will work just fine. Quoted from Apple:
"For instance If you have a MacBook (13-inch Late 2009) that normally uses a 60W adapter, you can also use an 85W adapter with that computer."