Haven't used it a lot yet, but so far it seems to charge as expected. The connector into the GBA SP is a good fit. Quality appears to be decent. It's a little lighter weight than the OEM charger.
Hand Held Legend and RetroSix
We've teamed up with RetroSix in order bring you custom designed products for all of your retro gaming needs.
Check them out at: https://retrosix.co.uk/
RetroSix is a small team of people who have been in the gaming industry and retail business since 2013, and sold consoles, controllers and even designed our own controllers and consoles.
Game Boy Modding : A Beginner's Guide to Game Boy Mods, Collecting, History, and More!
Complete beginner's guide to all aspects of modifying the classic Nintendo Game Boy. D.I.Y. Game Boy Modding will provide readers with a detailed process for purchasing, refurbishing, modding, and customizing several Nintendo handheld consoles.
Get the printed book here: