Amazon.com : Kastar Replacement Battery for Sony NP-FM500H Infolithium M and Sony Alpha A900 A57 SLT-A57 A58 SLT-A58 A65 SLT-A65 A68 SLT-A68 ILA77 SLT-A77 II ILCA-77M2 A99 II SLT-A99 II ILCA-99M2 Digital
Sony A57 Review
BM Premium NP-FM500H Battery for Sony Alpha a77II, a68, SLT-A57, SLT-A – Big Mike's Electronics
Amazon.com : PowerTrust 2-Pack NP-FM500H Battery and Fast Charger for Sony Alpha A58 A57 A65 A77 A99 A900 A700 A580 A560 A550 A850 Batteries : Electronics
Battery for Sony Alpha SLT-A57, 1400mAh, replaced: NP-FM500H;: Amazon.co.uk: Electronics & Photo