These batteries are specifically designed and built for the apple ibook g4 12-inch series 32 VRAM With a longer power lasting time and quick time to be fully charged, the battery gives you the best performance possible compared to original manufacturer standards for apple ibook g4 12-inch series 32 VRAM Batteries; even it delivers 5% more power than the original apple ibook g4 12-inch series 32 VRAM Battery.