As you are making a purchase decision, we suggest that you take the time to read some NB-4L Canon 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 use three batteries in rotation, as I am frequently travelling in places where there is no electricity. When I traded in my old PowerShot S410 for a new PowerShot SD750 I took a chance on buying two generic batteries ($12 instead of $42).

Both generics were slightly less than perfect, in that they would regularly activate the 'low battery' icon/light even when they were fully charged. Occasionally, they would even evoke the 'change battery' message. On these occasions I had to open the battery compartment, partially remove the battery, then re-install it, in which case I could now proceed to take pictures with the same battery.

My sense was that the total battery life of the generics was not dramatically shorter than the Canon original, although I did not attempt to measure this precisely.

As soon as I was able (about a month after I bought them, as I was travelling at the time) I returned the generics to Amazon and paid full price for the Canon original. Although the generics could be 'worked around' it wasn't worth it to me, as I discovered I was more interested in taking photos than in saving $30 (times 2).
-R. Stewart (NB-4L Canon Battery user review from Amazon.com)

This is the exact same battery that came with my Canon SD200 camera (digital elph). I wanted to have a spare, and while you can find the replacement batteries (generics) for about 1/2 the price I really didn't want to risk anything going wrong by using any other type of battery. It takes a charge well and has a nice life to it, I am satisfied.
-K. VanDette (NB-4L Canon Battery user review from Amazon.com)

The value of having a second camera battery cannot be overestimated because the battery cannot be charged on the camera on most models. Swapping out batteries gives you continuous coverage and if you have a 2 Gig memory you can take a thousand pictures should you choose to do so. Moreover,the battery has a neat little cap with a built-in indicator which allows you to easily tell a depleted battery from a fully-charged one and eliminates the chance of spare change in your pocket or purse from shorting out the terminals. Strongly suggest you have one of these.
-B. Fernandez (NB-4L Canon Battery user review from Amazon.com)

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Don't try to save $$ by buying off-brand replacement batts for the Canon Elph & Powershot series. You'll live to regret it. Nor will you have to live a long time. One or two photo sessions will have you regretting your purchase. The companies who make and market the replacement batteries intentionally mislead potential purchasers into believing their products meet the recharge standards of original Canon batteries. THEY DO NOT. NOT EVEN CLOSE!! The price differential is sucker bait. Caveat emptor.
-"Jerseyboy" (NB-4L Canon Battery user review from Amazon.com)

As in most cases you get exactly what you pay for with the Canon Battery Pack. You can find plenty of cheaper battery packs but none will offer the superior performance, reliability, and longevity provided by the Canon Battery. In the long run when you by the cheaper battery packs you end up paying more for less capablity.
-D.M. Loftis (NB-4L Canon Battery user review from Amazon.com)

I have a Canon SD-1100 and use this battery in it. The battery lasts a very long time. But it's great to have a spare for when you're charging your regular one.

I bought a cheap replacement and was sorely disappointed. It didn't hold up at all and didn't even hold the charge. It was worthless. But CANON for your Canon camera. Yes, it costs more. But, as they say, you get what you pay for. This battery is great and really lasts. I use it trouble-free.

I've checked prices all over and Amazon is the cheapest I've found so far.

Highly recommended.
-S. Hutcheson (NB-4L Canon Battery user review from Amazon.com)

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