Post date: Feb 25, 2012 4:46:27 AM
This is a 12 cell Battery Management chip with MOSFET driver circuit.
Here is a link to the chip made by Linear Technologies - http://www.linear.com/product/LTC6802-1.
There is also a AVR micro-controller project for controlling the LTC6802-1 BMS chip. Here is a link to google code site - http://code.google.com/p/avr-drv/.