Motorola Droid Maxx Cell Phone Battery (Li-Pol 3.8V 3500 mAh) - Replacement For Motorola EU40 Cellphone Battery - Installtion Tools Included (Li-Pol 3.8V 3500 mAh) Internal Battery Replacement For Motorola EU40 Cellphone Battery - Installtion Tools Included Made with high quality Japanese cells. 100% compatible with your OEM battery. 1 year warranty