[Samsung Infuse 4G] garbagedump481:
I bought today an 1800 2-pack, a 1900, and a 2200 from eBay. Cheap Chinese batteries, but all in all, I spent less than 20 dollars and got 4 (!) new batteries, and no chargers. For that alone, provided they last a few months, is well worth the purchase. It will take time for the 1900 and 2200 to come in since they are in Hong Kong at the moment, the 1800 2 pack is coming from Brooklyn and should be here mid-next week.

I only bought the ones that wouldn't bloat my case. All of these snap right into the back and don't replace the door. If I was going to allow my phone to get fatter I'd have definately done a 3400 or a 3800 mAh battery/door combo.

I'll put up results, thoughts, and conclusions once I get them broken in and tried for a day.

Since this process is highly subjective, I can only say that as you use the phone less, the batteries will look more awesome in terms of how long they last on a single charge. That's the obvious. The less obvious comes down to my ROM, where I live, my wifi useage, launcher, widgets, OC/UV, even SD card speed. It goes further than that too.

But I'll put it up here along with what I'm running at the time of the review.

As a starting point, I'm currently running CM7 in what I believe to be a bare bones config, with a class 10 16gb SD card for faster read/write (soon to be pushed all the way to a 32gb maybe mid next week). I OC and (would) UV with System Tuner Pro (it has an option to set what your governor is while the screen is off, and how fast the phone can run maximally while it is in a call like in SetCPU, but also includes built in app cache cleaning so I figured 2 apps in 1 reduces number of installed apps). Apart from that, I use the stock battery and get a little over a day's use from it. That's 7:45 AM to 9 PM, and I run down into the mid-30s range of power. That's a good while more considering that I have JD's threshold set at 50% and on a 2 hour schedule. Wifi is on CONSTANTLY while at work (until 50%), but I have set the wifi sleep policy to while-screen-off. Wifi uses less power while in use, but it uses more power in standby than mobile data does on standby (from things that I've read). I'm still testing to see how JD handles the wifi sleep policy and how data works while on it. My phone is bleeding out it's last 34% for today and I'm about to go watch a movie ;)

Usage is hard to define, since my usage depends on what day of the week it is AND how the car markets overseas are, plus how much money the company I work for has to spend at the moment. :confused: I do lots of stuff, or very little; there is hardly an in-between day for me. I can only approximate, barring that someone here does not give me a template to use, what an "average" (keep that thing about relativity in mind) might be with a new cheap battery. Some days I'll get 8-15 phone calls that last 2 minutes tops. Some days I'll get 1. Some days I don't text, other days I'll be writing novels. It really depends on work.

Weekends I hardly use my phone since I'm either chillin at the house, or I'm with the people I'd be calling/texting/gaming with.

EDIT: A good way to look at this is, that for ~40% off the cost of a brand new stock battery that doesn't improve performance, I've got 4 batteries that could be close to the stock performance and I can switch them out day by day, reducing the continual wear on them. These batteries, for all I know, and as far as my track record goes, will probably last until the day my phone dies. I've gotten 4 batteries, that may perform slightly less than, if not equal to, a stock battery.

For less than the cost of a new battery.

And the 2200 might come out to be a big improvement.