Sony NH-AA-B4EN Cycle Energy High Capacity AA Rechargeable Batteries 4-Pack (2500mAh) - Perfect for Digital Cameras, Game Controllers & Wireless Devices

I do a lot of instrumental music recording and performing, and I use these Sony rechargeables EXCLUSIVELY in my gear, the most power-hungry of which are my Zoom H2 Handy Portable Stereo Recorder and my GigLight Compact LED Music Stand Light. I also use them in my Canon PowerShot A720IS 8MP Digital Camera with 6x Optical Image Stabilized Zoom when going "optical" rather than "audible."I can EASILY record two hours of music on my H2 with two of these batteries at 44.1kHz, 16-bit. I have never even come close to their running out early, and I've never had the device quit because of a lack of power. And I have recharged these MANY times for MANY gigs.Loading my GigLight with these, I have found I can run it OVERNIGHT -- even 24 hours! -- and not drain them completely.Plus, the batteries last between 200-400 pictures in my Canon, depending on whether I'm using a lot of flash and whether or not I leave the AF on "continuous." I'm never short of power. It's amazing.Charge time is very reasonable, and when I use the H2, which uses only 2 batteries, I have a spare pair at the ready if I need them.These leave Alkis in the dust! HIGHLY recommended -- and that's high praise because I'm generally NOT a Sony fan. But I am a fan of these!