The Motorola GP1280 Battery can come in different milliamps and chemisrty to meet your needs.  You can get a 1200 mAh NiCd battery, 2000 mAh NiMh battery or a Motorola GP1280 Battery that is Lithium Ion with 2500 mAh of Power.  The most important difference between all of these batteries can be found in their weight, ability to hold a charge and...