Pearstone's NP-FW50 Lithium-Ion Battery is a budget-conscious alternative for the Sony NP-FW50 InfoLithium Battery Pack. Designed to work with most of the same cameras as the Sony NP-FW50 (except NEX-C3, NEX-F3, NEX-3N, NEX-5N, NEX-5R, NEX-6, NEX-7, SLT-A35 & SLT-A37), this 975mAh battery provides hours of non-stop power. In addition to long life, the FW50 also features an info function that accurately displays the percentage of battery life remaining.