The battery is 3.7V Li-Pol 1530mAh. Battery capacity is identical to one used in Kindle 2. MC13783VK5 is used as battery management chip also identical to Kindle 2.
CPU is MCIMX31LDVKN5D M91E CTAK0915B by Freescale Semiconductors which is the next revision of the one used in K2. Is uses ARM11 microprocessor core. It can run on core clock frequency of up to 533Mhz.
Samsung 916 K4X1G323PC-8GC3 EMA188A5 is a 128 Megabyte mobile DDR SDRAM chip. This is the same as in Kindle 2
Samsung 840 K4M28323PH-HG75 AAH055BE is a 16 Megabyte mobile SDR SDRAM chip. Based on the fact that it’s located right next to Epson eInk controller chip (see below) I would dare to guess that it’s used as “framebuffer” memory. I could be wrong though.
eInk controller is Epson D135211B1 F09090125.
Flash chip is Samsung 907 KMBLG0000M-B998. It is 5 Gigabyte MOVI NAND + NAND + MCU.
Except for the flash and slightly upgraded CPU all other components are identical to ones used in Kindle 2. That’s why Amazon was able to release it so soon after K2 was released.
Folks from iFixIt.com have disassembled Kindle 2 and here is brief scoop of what they’ve found:
Battery used is 3.7V 1530mAh Li-Pol battery model number S11S01A. It weights 1.1 oz which is 10% of total weight of the device. It has slightly less capacity than iPhone 3G battery which is 1400mAh. Freescale MC13783VK5 is used as a battery power management chip.
There is no protective cover on the display. So if you scratch it or break it repairs would be quite expensive.
Main processor used is MCIMX31LVKN5C M91E CTAH0850V. It is ARM-11 CPU that runs at 533 Mhz and is manufactured by 90nm process. This is an upgrade from Kindle 1 which used 400 Mhz Marvell PXA255 CPU marked with LUPXA255A0 G7171929.2 0744 KR C400.
RAM is represented by 128MB DDR Samsung K4X1G323PC chip. This is an upgrade compared to 64MB RAM found in Kindle 1.
Flash memory is 2GB moviNAND. Major upgrade from 256MB built in Kindle 1, but as we know it comes at a cost of not having external SD slot.
There is unused space on the PCB for SIM card. This hints to possibility of international versions of Kindle.