Complaint: I ordered the AANN4285 battery from SF Planet and they sent me an AANN4258 battery. They didn't tell me they were switching my battery order. The substitute works, but is not as powerful, and doesn't stay charged as long, as the 4285 battery. I e-mailed SF Planet customer support about the problem, but they ignored my complaint. There are other sellers you can buy from. Suggest you try them; what's more, the other seller's batteries are cheaper.

Timely service, excellent price (can you beat it?).
The item fit right into my phone, charged properly, and I've been using it for about a month w/o any problems.

Battery works just great. It is hard to find these batteries because everyone seems to have all of the new phones available. Our old phone works just fine...it just needed a new battery. Thanks!!

My "new" battery holds a charge for two days then it is dead.

Amazon should not sell this product.

Okay: My cellphone is getting old and the battery that came with it was dying slowly, like the tenor does in an Opera. I looked all over the place and couldn't find a replacement, again because my cellphone is made of clay and animal skins; it's that old! Finally, I decided to try Amazon, largely because they have stuff; lotsa' stuff and old stuff as well.
Huzzah! Not only did they have the juice can (battery) I needed, it was cheap, as in "we're clearing the shelves of this junk, let's see if anyone will buy it". It was less than five dollars, probably only twice what it cost to make it.
End of story: My cell phone battery is now running like a champ (unlike me) and will last long enough to get out of the dratted contract I made with the carrier. In short: Amazon came through when nobody else would, and the battery is...well, a battery- a new battery, a good one...What else can I say? I'm happy!