So many questions have been asked about carrying multiple batteries and having a massive charger and just carrying 3 batteries around with you and why people dont want to do that.
I have several reasons why the Seido battery is appealing as opposed to carrying multiple batteries.
1. Who exactly wants to carry multiple batteries with them? Given the option, Ill pass.
2. You should see what it looks like when I come home. I have a bluetooth fm transmitter, a cell phone, an ipad and a gps that all have to be plugged in to charge for the next work day. I really dont want to add to this list.
3. Given the option, I dont have the time to power down my phone, futs around with the back of the Note to pull and replace the battery with a replacement. This is a silly waste of time (at least 2 minutes for me each battery change, likely closer to 3 or 4 minutes).
I had a tumor Seido on my Captivate and it was just fine. In fact, it made the phone easier to hold. I dont know about the Note yet because I havent yet ordered a Seido for it but my guess is that it will make the note easier as well, especially since I have a tendency to hold the phone near the top around the edges, constantly turning the screen on/off or changing the volume. With the Seido on the Cappy, I could easily grip it from the battery casing rather than holding on to the edges of the phone.
I also think its worth mentioning, since the original back of the Note is just flimsy plastic now, that is something I wont miss. The Captivate on the other hand, I really liked the metallic backing it originally came with and was sad (one negative with the Seido) that the backing they provided was just a plastic with a rubbery coating.
I dont have problems with battery life on my Note, I usually come home after 10 hours with 60-65% battery left, which is plenty enough for me to feel comfortable about (stock, never been rooted, OEM battery). The only reason I ordered an extended battery for my Captivate was that it would nearly be dead after 10 hours with around 15% battery and if I should have any problems with my car or some other problem arose, I didnt feel like this was enough to deal with a potential emergency, should one arise.
Seido is basically doubling the battery life on the Note for that size so if you are going thru more than 2 batteries in a day, this thing wont solve your battery swapping nightmare. Most likely, they will come out with a 6000 mah battery at some point, they continued to upgrade the Captivate battery from 3000 to 3600 (I had the 3600).
The one thing I can say about Seido batteries, you get what you pay for. These things arent like the $10-$20 ones you see on Amazon claiming to be extended batteries but perform as good as the OEm (or less than as good). They are also very good quality batteries, I used my Seido for a year and a half and then passed it on to my dad who is currently still using it on his Captivate and its working well for him. Hes happy, no more carrying and swapping two batteries, nor does he have to worry about it.