Aftermarket Kyocera Kx9 Battery is rated at 1000 mAh, and keeps a Standard profile on the Kyocera Milan KX9, KX9B, KX9C cell phone since it does not require any larger battery door.
Powerful Lithium ion battery technology has no memory effect either.
Light weight battery is approximately 2/3 the weight and size of a Nimh battery of the same capacity.