I bought recently a Sony A77 and realized that the current hunger especially with old Minolta lenses is quite high. Looking for a second battery, I found the bundle Star battery and must say I am fully satisfied. I was from the first charging time somewhat irritated because the charger is much faster meant the battery was full as the original battery, but apparently was already summoned. The camera detects the battery without errors (Firmware 1.06) and I have been able to detect any difference with the original battery (Well apart from the price times; o)) Highly recommended the battery.
