Work wonders, instead of buying new batteries all of the time.
352939
If you use hearing aids, these are great instead of buying batteries all of the time.  Buy the Power One portable charger and this comes in great if you are away, or just need to give your hearing aids a quick change when they die.
3518468
Great design, works very well.  I always hated to throw out batteries that may have had some useful life.  Now I will use them to the bitter end.  Also, when ever something didn't work properly, the first thing to change was the batteries.  Now I can be sure the batteries were the problem.
1777060
Should have bought them years ago; reduced low battery incidents might have saved me the cost of these kits.
3085039
Perfect replacment for the old batteries which did not hold a charge anymore.  The new ones are just like the originals.  For the record, the originals failed because most of the family failed to charge them regularly and they laid dead for days or weeks on end.  I expect with proper care, these should last much longer.
1773863
I have purchased more than twenty of these for the charger, batteries, and the battery holders.  I uses these to power cameras and motors and have run each one through many more than twenty cycles.  The chargers have all worked except for an early death of one.  The batteries work fine except for the ones that went through the wash.  The Kodak and Fuji batteries might be a bit better, but not by much, if at all.  Certainly for the price these are a way better deal, and having a few more than I thought I needed have proven to be just the right amount.
2525580
Way better cost option than original batteries - and it works just as well
745819
These replacement batteries were sitting around my house for eight months before I finally charged one of them up and started using it.  The talk time has DRAMATICALLY increased from what I had been getting and might even be longer than the original battery when it was brand new.  I recommended these to a friend who was just about to go out and buy a new phone, and she is having the same excellent experience.  (Unfortunately, with us both now having such long-lasting batteries, there's little incentive to curtail our phone chats, and we waste way too much time talking!)
3240142
Great replacement for my OEM batteries, actually more power!
2756028
Great product, makes storing batteries much better!
3270579
These guys seem to work a lot better, in terms of holding a charge, than my original 18V batteries... but those ones are going on 11 years old by now.
820251
These cans work great.  We use rechargeable batteries and they have functioned very well with only needing replacement once every 6 months or so.  They get used at least a dozen times a day or more.
263325
This charger will keep AA and AAA batteries healthy through an intelligent charging function and even rejuvenate the older ones.  I have quite a few batteries that were not holding a charge and the "refresh" function on this unit has brought many of them back to a usable state.  It has the ability to change the charging current, which results in the speed of charge.  If you can take the time, use the lower currents as it is a bit easier on the battery.
3168062
These are great and will pay for themselves over and over. This is the long, technical reason why: A "float charger" is what you want to use to recharge a battery, any kind of battery, as it reads the battery level and stops charging when it is full. Electronics manufacturers never use float chargers b/c they cost a little more and instead use "trickle chargers" which never shut themselves off. This means when your laptop battery, cell phone battery, cordless vac battery, etc are fully charged the charging mechanism keeps charging anyways and this destroys your expensive batteries. This new take on an old-school devise provides a work around by allowing you to use those trickle chargers for a set amount of time so you don't over charge your batteries, which are expensive replace. In my experience a Dyson, handheld, cordless vac takes the 1/2 hour setting to recharge. A cell phone and smart watch is usually the same 1/2 hour setting, and my laptop, if almost dead, will take the 3 hour setting and be back to max even if I am using it at the same time. I now have these on all my rechargeable devices and LOVE them.
3836848
Decided to replace the spent batteries in my emergency lights for the house after going through the power outage of Hurricance Sandy (Superstorm,... whatever we're calling it.)  Not that this would have helped with a one week outage, but it's nice to have a few lights that come on in the house when the power goes off unexpectedly, which lately given the wild weather we've seen, happens more often than in the past.

These batteries fit in perfectly and charged quickly.  Tested them and they work great.  Not sure what else I can say about batteries :)  But they do what I needed them to do.
1432065
Works great!! Love them!!  Saves sooooo much money and time not having to constantly replace batteries
2296757
This item has worked amazingly for me. Now, not only can I charge my original battery again, but I have a spare battery and I can charge them on the go if I'm out all day on photography shoots!
2983476
After going through numerous batteries over the years and being disappointed in their short life, this has been a godsend.  I am thrilled to be able to use them for longer periods of time than I ever could.  The price is certainly right and would recommend this product to anyone.  I have never had any problems with removing them from the packages as some have stated.  For me, I am more than pleased and will continue using them.