[jonnythan]

Those mAh ratings are basically made up. The "1800 mAh" won't last any longer than the "1700 mAh" one. Actually, it might, because it's Mugen and I hear they may use high quality materials, but that might be just the perceived value effect.

Anyway, the point is that the mAh ratings of these batteries are essentially meaningless. The only way to know which will last longer is to do an actual test.