Does not hold a charge as long as Pentax branded batteries
359051
My 3 year old Pentax branded batteries still hold a charge longer than the Wasabi batteries even though the Wasabi's claim to have a greater capacity.  I would estimate that I can get 25% more photos with the 3 year old Pentax batteries than with the new Wasabi batteries.
4057357
Unlike my Canon batteries, these don't hold a charge when not in the camera. I cant charge all of my batteries and have them in the case as backups. These will charge fully, and then two days later in the bag, and they are dead again.
2460449
After over 1 year of use I tested the batteries and
one will record video for 10 min at a time 4 times and the other does 8 min videos 3 times
in my SX700HS.

Compare this to the Canon Battery that does two 23 minute videos and one 14 minute video.

So for the price they are good batteries but do not fully measure up to the Canon battery
4189893
For the price of these batteries you'd think they would hold their charge a bit longer.  I was recording a video and this battery wouldn't even last for 30 minutes of recording.
3511830
I ordered two of these batteries, and they work okay, but there was one thing that mildly surprised me about them.
The stock Panasonic brand battery - rated at 940mAH - that came with my Panasonic SDR-S26 camcorder will operate for 93 minutes.
These batteries are rated at 1000mAH, and they only run the same camcorder for 75 minutes.
This is far from being a deal breaker, as these cost a fraction of the price that is charged for the Panasonic.
I gave $12 for each of these, while the 1000mAH Panasonic battery is $60.
I see that Techfuel offers their own 1000mAH battery for $13, so I may buy one of those in the future to see how it performs next to these and the Panasonic.
In the mean time, these should work just fine, as I just don't really see myself running the camcorder for much more than an hour at a time.
This is still a pretty decent product, even though it does not really perform as its amp/hour rating would indicate.
4469547
and this is one of those times.

I've used this battery a few times now, and it works well for its intended use. On the plus side, my Canon camera does display battery life remaining (something that it can not do for other such batteries).

On the minus side, battery life is not reliable. In my most recent outing, the camera showed 286 minutes remaining when I first plugged in the battery. After five minutes (not recording, but camera on) there was 260 minutes remaining. After slightly less than two hours of continuous recording, battery life remaining was down to 26 minutes. Battery life has degraded every time I've used it.

EDIT: after just a few more uses (I think about 6 or 7 total now), I was unable to get 3 hours of recording time from a freshly charged battery.
3779663
I use this battery in the Sony Cybershot DSC-P8 that I bought 3 years ago.  The battery is the original one that came with the camera and after 6000+ shots and three years, the battery still holds a very decent charge.  I'd say it's 75% of what it used to be, but these lithium batteries only last for so many cycles, not to mention they have a shelf life.  I just used it for an event and every shot had the flash on; I took about 100 pictures over the course of 2 days and there is about 6 minutes of charge still left.

There are little tricks to sustain battery life in these cameras.  If you are going to leave it on for a while to wait for a good shot, turn off the display.  The display eats juice like nothing else.  Shot through the viewfinder with the display off for maximum runtime (not that practical if you are really trying to see what you are shooting).  Try not to always zoom in and out, chances are you can just crop the picture later in photoshop so leave it zoomed out.  If you know it's going to be a while between shots, turn off the camera.  Sure it drives in the lens every time, but it's better than just leaving it on for several minutes.

Lithium batteries like to be stored discharged.  NiMH (Nickel Metal Hydride) like to be stored charged.  It's not very practical to store a camera discharged if you are needing to pull it out at the spur of the moment to capture some precious moments, but if you primarily use it for special occasions, events, parties, etc..  maybe it is.

The newer higher megapixel cameras might just be really power hungry.  Try using the lower image settings and see what the difference is in battery life.

The only other thing I can think of to justify everyone's bad reviews is maybe look at the source where you are getting the batteries.  Are they brand new, and how long have they been sitting around before they were sold?  My guess is they are old batteries, not used - but old.
3238442
Hopefully, the battery I now have in my camera will continue working for awhile.  The first battery only took about 3 minutes to charge, but only lasted about 5 minutes!!  Still a good buy for only one battery, considering the price of these batteries everywhere else.
1514494
Unfortunately after making sure both batteries were charged for my trip overseas and also doing a day check on charge before picture time, they lost their charge within a half hr. of usage.  I tried again and had the same result.  Fortunately my original Cannon battery held it's charge and I did not miss the beautiful tulip bloom in Holland.  I wish that I could have had a better write up for you.  They could just have been bad??????
1975274
Did not last anywhere near as long as my OEM Nikon EN-EL15 for my Nikon D750. I was video recording my son's basketball games. He had 2 games the day I tested this batter. It died at the end of the first game, which was after about 40 min of recording time. I then put in my Nikon OEM battery and it lasted the entire second game (again about 40 min recording time) and was only about 1/3 depleted at the end of that game.  So this battery lasted about 1/3 of the time of the OEM...and its about 1/3rd the price. Yet it states that it has a higher mAh rating (2,200 mAh vs 1,900 mAh of the OEM), which can't be right.
701795
They don't hold a charge.  Thought it was going to be like the one that came with my camera and the charge would last for weeks. These are the same voltage and last a few hours.
3300345
Ive only had the battery a short time and have not used it more than a couple of charges.  Im using it in a Kodak Playsport Zx3.  One of the first things I did was charge it up then let the camera run until the battery died.  For the original Kodak battery I got 1:18.  This one got 1:54.

We'll see how it does over time and after several charge/use cycles.

UPDATE:
After almost a year of very moderate use the battery will no longer take a charge.  I charge it in the camera same as I do with the original battery.  After 10-12 hours of charge the camera will not turn on with this battery.  Swap to the other battery and it is just fine.  Ive reduced my "stars" rating from 4 down to 3.  At $3-$5 the battery is still not too bad a value for several months worth of use.
863199
I purchased this battery as a backup to the battery that came with my camera.  It works well as a backup but the charge cycle of the battery is a lot shorter, meaning it only held it's charge for a quarter of the time the original battery operated.  I didn't expect much more than that because of the price.
1514222
These are expensive but blow the generic batteries out of the water in terms of longevity and battery strength. I also keep 3 generics in my camera bag but they barely hold a charge anymore.
1336250
The batteries themselves are too small to actually fit into the charger, so you need a ponytail or a rubber band to hold it in there in order to charge. One battery stopped working 6 months after purchase. The remaining one can handle roughly 1-200 pictures before it is out. Both batteries started out working great and allowed for twice the amount of pictures as it does now, but for whatever reason, they didn't maintain that standard. Sure, two for half the price of an original fuji battery, but when only one works and holds half the amount it should, there's really no difference.
474751
Got two of these batteries with the associated charger, and while they work, they hold less than half of the charge of the original Canon battery. I'm lucky if I get 300 shots on one of these batteries, while I can get 1000 shots on an official battery. Even at 1/4th the price of the official batteries, not worth the money.
1741411
This battery did not last as long shooting as the battery that came with my SD1200 though it wasn't terrible. I keep one charged as a backup for when my original battery needs recharging (I always run mine down before recharging). Considering the cost it's a deal though.