Kastar Replacement Battery for Sony NP-FM500H & Sony Alpha α77 a77 SLT-A77 | eBay
Kastar Replacement Battery Pack for Sony NP-33 NP-55 NP-98 NP-66 NP-68 NP-77 | eBay
Sony Camera Battery Np Fm50 | Sony Battery Np Fm500h A77 | Sony Alpha A580 Battery - Digital Batteries - Aliexpress
Amazon.com: Synergy Digital Camera Battery, Compatible with Sony Alpha a77 II DSLR Digital Camera, (Li-Ion, 7.4V, 1700 mAh) Ultra High Capacity, Replacement for Sony NP-FM500H Battery : Electronics