Original Title: KMD GBA SP Replacement Lithium Ion Battery with Screwdriver - Game Boy Advance Optimized Title: **KMD GBA SP Replacement Lithium Ion Battery with Screwdriver for Game Boy Advance SP - Long-Lasting Power for Gaming On-The-Go**

Holds a great charge, I was surprised! Usually after market batteries (not necessarily from KMD) don't last very long (I've been through several PSP batteries that die after only 2-3 hours when my old worn-out Sony original lasts 4-5). This KMD battery has lasted 8.5 hours on my AGS-001 and is still going on the first charge! I'm highly impressed and will be buying their DS Lite version. This battery has breathed new life into one of my favorite portable systems. I don't know how long it'll last on the AGS-101 but if it lasts this long with the front light I imagine the backlit version will last a great amount of time as well.