Excerpt: I'm a Rail Buff, so I take all kinds of photos all kinds of distances in all kinds of lighting conditions. Running out of Juice just when the photo I'm waiting for is set up isn't an option. Make sure you have more than one fully charged battery on hand at all times.
Pros: Easy To Use, Good Interface With Camcorder, Lightweight, Quality Construction, Sony Interface
Cons: 4 Hour Re-charge, Multiple Backups Required, Not Generally Available, Requires Sony Charger
Summary: It's a battery and it works. If you are looking for extended recording time this probably isn't the one for you. I wanted a second battery that wouldn't add bulk to my small camcorder. Two batteries and a wall charger worked out perfectly for my vacation. I charged both overnight then just packed the second one in my day pack. Being so small and light it was super easy and provided more than enough recording time.