Ok so images were requested, and I have a few to show. Don't slaughter me. I'm no pro reviewer, and my bud who took these is no photographer. Just trying to share an experience.
First off, the real meaning of the matter. How much juice can I get.
As you can see by the % display time I was using it pretty heavily. Lots of streamed videos and tons of surfing mainly. My first charge lasted 24 hours with frequent as possible use but I had a pretty busy day then, so I used this shot from my second full charge.
Edit: I didn't use this the way i normally would for this charge. I had auto brightness off and brightness turned way up. Juice defender was disabled and wireless connections were active. I believe on average my charge would last 20+ hours, and I will be in bed and have it on the charger long before it is ready to expire.
A couple profile shots off the table. Apologizes for the war torn workbench, though it keeps the bills paid.
another
I like to eat and surf and was worried the bevel on the back would make it rock. Glad to say it does not.
And one more of the back, as you can see they are not indestructible. The back plate does not impede the speaker that I can tell. I use volume+ anyhow and it sounds fine.
I have to say overall I am very pleased with the battery and cover so far, especially for the price. As you can tell from the last photo, I did drop it. It was the first time I had dropped the phone in the 1.5 months or so I've owned it. It is because I was still not used to the weight and added bulk of the phone while pulling it out of my pocket on the move. It's not horrible damage but my friend tried to get a good shot of it to show you, otherwise it's utterly unnoticeable.
The phone is weighty, but I don't feel stressed out using it. It does have more bulk but I can still easily manipulate it with one hand. The back cover is cheap, but does the job. Something to note though. My reception dropped dramatically. I couldn't have that. So I looked into the manual where the antennae are located on the unit (page 111), I carefully peeled the copper foil from the stock cover and placed it on the new back upside down and with a slight curl to reach the bottom of the phone where the main call/data antenna is. My reception has been perfectly fine since. I was worried the gps and bluetooth would be affected by the placement of the copper but they seem to function just fine. I wish I had taken pictures of the copper but I am sorry I didn't think of it. It wasn't a big deal though, just be careful and use a sharp knife.
Overall a good experience, and I only spent about $12. Took some time to ship from china but that's about it. Still many left from various sellers on ebay. Before you take the plunge if you decide, just make sure you're buying from a high grossing top rated seller is the best advice I can give.