Super deal!
Very pleased with these batteries.  I got two for less than the price of just one and way cheaper than the Sony battery.  I use them in my Sony headset that I use for watching TV.  I have had them for about three months and, if I remember to put the headset in the charger when I go to bed, the headset is fully charged and I have never had to recharge during the day.  The second battery has not yet been used.  I recommend these batteries without reservation.
Rating: 5 stars