Users have reported a battery life of 8-10 hours on average.
Now you can be just like Makho with this Game Boy Advance SP battery mod! Stop using those cheap aftermarket SP batteries that lie about their capacity and give this one a try! Super simple to install and adds tons of extra battery life for your new IPS screen mod. Check out the video below for the installation instructions.
Just remember... The red wire wire gets soldered to the positive (+) and black wire gets soldered to the negative (-)
Don't screw it up!