The Samsung Gravity Smart is also known as Samsung SGH-T589, Samsung Gravity Touch 2, Samsung Smart, Samsung GT2 For T-Mobile. It uses a rechargeable li-ion battery.
The Samsung Trender is also known as SPH-M380. It remains essentially the same as the Seek, but adds some nice upgrades like a larger screen and a more contemporary design. Also the Samsung Trender uses same battery as Gravity 3(SGH-T479).
The Blackberry Bold 9900 Battery uses a new li-ion battery. The original battery code is JM1, which is a bit smaller in capacity than the 1550mAh MS1 battery that's been used in the Bold 9000 and 9700/9780. The footprint of the battery is about the same, but the JM1 is definitely thinner as you can see in the comparison shots below. During our press briefing session this week on the device I asked about RIM's expectation of battery life on the 9900 / 9930, seeing as there's a smaller battery but a higher performing processor, and RIM seemed very confident in the battery life. RIM's always put battery life as priority, and they haven't sacrificed the user experience here - so expect the device to power you through a full day of work and play. With the new Bold being the thinnest BlackBerry to date they needed to go with a slightly thinner battery. And for power users who eat through batteries regardless, the good news here of course is that you can always buy a spare battery and swap it out if you need to - I'm glad to see RIM still allowed for a removable battery on the new Bold.
Pantech Crossover is Pantech's first Android smartphone. The Crossover is powered by a 600MHz processor, runs Android 2.2 (Froyo), sports a full slide-out QWERTY keyboard, a 3.1-inch touchscreen display, support for 802.11 b/g/n Wi-Fi networks, a 2GB microSD card, a 3-megapixel camera.
The Pantech Crossover uses a 1500mAh battery good for up to five hours of use. Here is battery spec.: Type: Li-Ion Voltage: 3.7V Capacity: 1500mAh Replace Code: PBR-65A Compatible with Pantech Crossover