Samsung’s Galaxy Note is set to be put into consumer hands this week as AT&T will have it in their retail stores starting on February 19th with pre-order sales already going on. Since this is a much large mobile device, the question of battery life comes up and currently the results of that question are not consistent. Since this is a combination phone and tablet device, it does change how the device might be used which has a definite impact on battery life. Given the 5.3 inch screen, it would tend to use more energy in powering the 1280 by 800 resolution screen, we might expect it to not last through out a day. You then include the 4G LTE capabilities and that is going to take more of the battery life as well.
The big question in testing battery life is whether one is using it like a tablet device which is different than that of a smart phone. Since the Galaxy Note is a combination of the two, it requires that testing for this primarily be done in terms of smart phone usage. Otherwise the results of the battery life tests may not provide a clear picture for everyone as to what they can expect. Take for example, the Gotta Be Mobile battery life report where they are saying were down to 4% of the battery after 6 hours of heavy usage. They pointed out the high brightness of the screen which would cause the battery to drain faster.
You contrast the previous report with one from Slash Gear where they were able to get a full day of usage on the Galaxy Note. There are differences between how the two were testing the Note and it makes the opposites hard to determine which is providing the information which we are looking for. In another test from GSM Arena they are showing specific testing areas which seems to be more meaningful to what people are looking for. Pure web browsing on the Galaxy Note will deplete the battery in about 3.5 hours. If the tests were consistent between all the reports, it would make things much easier, but each one is different and really cannot be viewed as solid information as to how your Galaxy Note would perform.
You add to that the 2500 mAh battery which comes in the Galaxy Note already has an upgraded version to 4500 mAh which is being announced by Mugen Power Batteries. This one will give you reported 80% increase in battery life. That is an advertised claim so you might experience differences. It seems that the last few phones put out by Samsung have had larger batteries available to improve the battery life within weeks of their release. Someone needs to answer the question of why Samsung does not include these larger batteries in the products when they come to market.