The extended battery for the LG VX-8600 is a 1400mAh extended lithium Ion battery. This battery is a high quality extended battery pack. It will give you much longer talk times than the standard battery that comes with the LG VX8600 phone. The extended battery may not fit with cases designed for the standard battery because of the added width. The LG Extended Battery is manufactured by LG and is compatible with the LG VX-8600 phone model.