As you are making a purchase decision, we suggest that you take the time to read some NP-FG1 Battery reviews in order to see what other consumers have to say about the product. Here are some user reviews to help you make your shopping decision:

I purchased this upgraded battery for my Sony DSC-W150. The reason I bought this battery is because it actually shows how many minutes are left before the battery dies. The battery that comes with the camera (NP-BG1) shows a simple diagram of how much battery life is left, whereas this one (NP-FG1) gives you actual minutes. I think this is a great feature for a battery. The charge takes a while maybe four hours for the first charge, but after it was fully charged I had almost 3 hours or 170 minutes of battery life available. These batteries are expensive, but I think they're worth the investment. No complaints here.
-D. Savaya (NP-FG1 Battery user review from Amazon.com)

During a recent trip to scenic Colorado, I put this battery to the test, and it passed with flying colors. This device packs an added bonus of displaying how much time you have left on the charge. I got this battery as an extra so I could be recharging one while shooting pictures on the power of the other. The Sony charger is very simple to use. The battery and charger are an excellent combination.
-G. Smith (NP-FG1 Battery user review from Amazon.com)

I purchased this battery as a back up for my recent vacation and boy was I glad I did. The battery life is waaaaaay better than the original battery that came with the camera (Sony H-20). I really like the fact that it tells you how many minutes you have left. Just as a side note you can get this cheaper elsewhere. Either way it is well worth the investment if you plan on putting your camera through some high usage.
-S. Weatherly (NP-FG1 Battery user review from Amazon.com)

Click Here To Read More Amazon.com NP-FG1 Battery User Reviews

Sony's G series lithium ion rechargeable battery is just what I need for my Sony digital camera! This battery is well made and it lasts a good while (about 420 still photos or roughly 210 minutes of video) before you need to recharge it. The battery also lets you see in your lens just how many minutes of time you have left before the battery needs to be recharged; and that's an improvement over the last battery for my digital camera which did not show me that extra bit of information.

The battery may be made in Japan and not in America; in case that makes you uncomfortable I can assure you that you won't be sacrificing any quality. This was actually a replacement battery for one that I lost and I haven't regretted this purchase in the least. It fits easily into the battery slot in my digital camera and works quite well. Of course, it also provides the juice to let your camera take video clips if your camera is able to do that. The quality of the images is always very good.

Although some note that this battery is costly, as of the time of this writing it's cheaper on this website than where I bought mine!

In addition, when you're not using this, keep it in its small plastic battery container that will come with this battery. With proper care this should last you forever.

Good work, Sony!
-M. Sherwin (NP-FG1 Battery user review from Amazon.com)

You get what they say. Just a simple battery that informs you of the remaining energy time, and uses the same charger that ships with the camera. Don't be surprised when you see the estimated time going up and down as you walk through the menus; when in the gallery watching taken photos, the camera requires much less energy than when doing shots.
-M. silva (NP-FG1 Battery user review from Amazon.com)

It's a great spare battery. I don't know why you have to buy the InfoLITHIUM battery separate to get the number of minutes remaining to display on the camera (why didn't they have that on the battery that comes with it), but since these camera's use special batteries, you'll want to pick one of these up for when your other battery dies and you still need to take more pictures.
-K. Miller (NP-FG1 Battery user review from Amazon.com)

Click Here To Read More Amazon.com NP-FG1 Battery User Reviews