RND Extended High Capacity Lithium-Ion Battery (EB555157VA) + Back Cover for Samsung Infuse 4G Perfect High Capacity battery made specifically for your Samsung Infuse 4G Smartphone. Designed to extend the battery life of your phone at an affordable price. Comes with a black replacement door. RND Power Solutions products comes in professional retail packaging and offers a 1 year hassle free warranty. 100% Customer Satisfaction is our Goal. PLEASE BE CAREFUL when buying products on Amazon and only buy from trusted sellers. Sellers without authorization may sell an inferior quality product carrying no branding. Examples of some trusted sellers would be RND Power Solutions and Amazon. Authentic RND Power Solutions products will have our branding on the product and packaging.