Mamen EN-EL14 Rechargeable Li-Ion Battery for Mamen D3100 DSLR, D3200 DSLR, D5100 DSLR, Coolpix P7700 and Coolpix P7000 Digital Cameras. The Mamen EN-EL14 is commonly used for Back-up, Digital photography, Photography, Portrait photography, Travel and more.The Mamen EN-EL14 is most used by customers who consider themselves to be a Casual photographer, Photo enthusiast, Semi-pro photographer among others.The Mamen EN-EL14 is popular because customers like the following qualities of the Mamen EN-EL14: Easy to install, Fast charge, Long-lasting, Reliable, Solid construction to mention just a few.