I found my game boy but lost my game boy as ace charger a while ago. I purchased this as a substitute and it works great! Happy I could find someone who still makes them at an affordable price :)Plug is too tight for the GBA SP. I compared the end with an original Nintendo plug and they are very different. The Nintendo one plugs in nicely while you have to force this one in. It does charge, but I won't be using it as I don't want to damage the charge socket on my SP.Was very excited to have a usb gba sp charger but no matter what usb port or power brick i plug it into it only charges my gba sp for a second and then turns off i know its not my gba as i have had no issue charging it with other cables.First one I got was defective, but the seller immediately responded to me offering a refund or replacement.The free replacement works absolutely great. Recommended!Got it in a timely manner really good quality