A Rechargable Solution That Works
I'm always suspicious of third party solutions for consoles... especially for Nintendo consoles. I've been burned time and again on "Company X" solutions for consoles. So, my purchase of this item (I bought two) without really knowing too much about it was extremely sketchy.

Well, I'm happy to say it really does work. Right out of the box, my wife replaced the battery covers with these and dropped the controllers into the bays and Voila, no need to keep a ridiculous amount of AA's in the house!

For the price I purchased them for, it's already paid for itself in battery savings. I've not used any other solution, but these have worked out for my family. And we play the Wii religiously. And as a Bonus, the Blue/Red LED lights on the front (the two red lightning-bolts you see in the pic) are almost hypnotizing.

If you found this item for a good price, definitely get it.

Works for me
Maybe some of the confusion is coming from the fact that the Wii has to be on in order for the charger to work. That wasn't readily apparent to me, and since I got that squared away, this hasn't given me any big problems.

Reliable charger
I have a nyko dual charger and added this one because I have three wiimotes. It seems like it holds a charge as well as the nyko charging station.

Its most significant flaw is that it plugs into the wii. It's getting a little crowded back there.

It works great IMO
Yeah, its a little tricky getting the battery to fit for it to charge. I was pretty upset until I figured out that you have to mess with it to fit just right. But with a little jiggling the light shows red, meaning its charging. I bought one to try it out and had to buy another one a month later. That and had some friends wanting one, because the battery life of the wii remote is terrible. This product works like a charm for me. That and its a bargain. Id spend this much on two packs of batteries that would last me a little over a month. Just buy it.

Works Perfectly
I don't know what problem you're having, mine works. You just wait till the light changes from red to blue, then SECURELY put it into the Wii remote. The only problem is that it is very hard to snap the battery into place. Otherwise, I have no idea why it doesn't work for you.