Just like in the new iPad, the battery in the Note accounts for a large portion of the device's weight. It weighs in at 136 grams. That's 23 percent of the 594 gram device.
The battery is rated at 3.7 volts, 7000 mAh, and 25.90 watt-hours.
The battery was downsized to 25.90 watt-hours for an estimated battery life of 8 hours. As expected, the battery falls short of the new iPad's 42.5 watt-hour battery and 10 hour battery life.