Most helpful positive review
554 of 563 people found the following review helpful
Identical to the Canon battery?
on August 19, 2008
I ordered one of these batteries as a backup to the Canon battery that came in the box with my Canon Powershot SD1100 IS, at the same time I ordered the camera.
Although the Canon battery, according to the writing on the shell, was made in Japan, and the Lenmar in China, they seem to be almost identical except for the tiniest variations in color of plastic and molding marks.
Both batteries are rated 3.7V and 760mAh. I put a digital multimeter on both batteries at full charge, and both read exactly 4.15V, which is about what would be expected.
There are batteries available with a higher mAh rating, but there's no iron-clad guarantee that they will hold a charge better, last longer, or even take more pictures on a charge, regardless of price. And even the best batteries will have a few duds in the batch, as a minority of these reviews reflect.
I could have done a test on how many pictures each will take on continuous shooting, but I will wait until both are "broken in" or conditioned... discharged and charged several more times. Then I will edit this review with the results.
I have discharged both batteries a couple of times while testing every feature of the camera, and I didn't note any problems or perceive any significant differences.
My camera should recycle the flash in about 3 seconds on a fresh battery. The Lenmar seems to be about 10% slower than the Canon, which amounts to a few tenths of a second. For one fourth the price, I can live with that.
For my Powershot, Canon advises not leaving the battery in the charger for more than 24 hours... as mentioned by another reviewer, it's not a good thing, regardless of protective circuitry in the charger or battery.
The battery will fully charge in 90 minutes, and there's no benefit in leaving it in the supplied charger after the green light goes on.
Tip; "Keep the battery terminals clean at all times. Dirty terminals may cause poor contact between the battery and camera. Polish the terminals with a soft cotton swab before charging or using the battery" (Canon manual).
So far, this battery seems like a good deal to me. I'll give it five stars, but only time will tell if the original battery is superior. I like it enough that I placed an order for another one today, along with another 4GB SDHC card.
I believe that you have to take a lot of pictures to end up with a few really good ones, especially with a compact camera, and I would rather carry several batteries than rely on a car charger... too slow.
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