These rechargeable AA batteries have enough power for frequent use of a camera, and seem to last, on average, 5 days without a recharge.
Reviewed July 15, 2009
I bought a new camera this spring after the sad demise of my Pentax SLR film camera. Three weeks later I headed to the woods on a long hike with it. I was really apprehensive about having enough battery power, since I had no idea how much power the camera would take. I did know that I tend to take a lot of pictures.
These are 2650mAh batteries. MAh=milliamp hours, which gives a rating for how much charge a battery is supposed to hold. This is near the top of the range of what is available at the present time. I think one brand has 2700mAh batteries. So these would be expected to hold a good charge.
I used several sets of them on the hike. However I managed to space them so that they did not have to sit around long after charging, but before using. (I won’t explain the logistics of that... probably not pertinent to this review!).
Since then I’ve been able to do more specific testing at home. The bottom line is that they seem to last for about 5 days after they are charged whether you use them a lot, a little, or not at all.
Now, that seems a little odd to me. The salesman thought that I shouldn’t store them for more than a couple of weeks between charging and usage, but the reality is much shorter than that, and the amount of use doesn’t seem to alter it much.
So, if they have just been charged how well do they do? I take quite a few pictures on any given day. Between maintaining 4 blogs, doing web site work, writing reviews, and just enjoying family or nature shots, it is a rare day that the camera is not turned on and off several times. Sometimes I use the flash, but I don’t use it too much. Of course that would affect the speed with which the batteries are drained.
My camera has both an electronic viewfinder and a display screen. I’ve been told that using the screen also pulls a lot more power, so I hardly ever used that while on the hike. I do use it sometimes at home, because I’m never more than a few minutes away from freshly charged batteries.
I’ve tried to keep track on a calendar, and it really and truly seems like the charge lasts about 5 days no matter how much I have used the camera. If I come to any totally different conclusions, I’ll post an update.
I am still trying to get used to dealing with a camera that has to have fresh batteries every time you turn around, but I think that these are working quite well if I can get into the rhythm. I have watched other people change out batteries in their cameras much more often, so these may be really good. The whole camera- battery thing is too new to me to give a really knowledgeable answer.
You should not mix batteries of different charge levels in your camera!
Update On Jan 28, 2010: These are not quite a year old, and are apparently worn out. I can't complain too much, since I have used them continuously, and use the rapid charger, but I had hoped they would last better than this.