900 mAh Battery for Game Boy Advance SP

900 mah Battery - Must have!

I got my SP battery from my Game Boy Advance, and it’s been working great! I initially got my SP from a retro game shop that had tested it and it worked fine. But, I guess they didn’t really test the battery, because it only lasted about an hour and a half before I had to charge it. I thought that would be my life, but after some research, I found that I could put in a better battery, and I’m so glad I did. I found this battery through retro modding, and it works amazingly. I went from the hour to about 8 to 10 hours before having to charge, so I can enjoy all my childhood games.

Excellent

I've picked up 2 at this point because they work really well. They last a very long time on IPS modded gameboys that are also running a flashcart.

Not exactly what I expected

The battery doesn't fit in the housing perfectly but I noticed a substantial increase in battery life that makes up for it.