I pickup up a surplus battery pack really cheap, but of course it came with no documentation. The pack was new, still in the bubble wrap, so at worst I can take it apart and use the cells separately, but I'd prefer to use it as it was designed.
The pack contains two 3.7V 820mAh cells in series connected to a small circuit board. On the board are two ICs. The larger IC is an 8 pin SOIC with the markings WB on one line, and 6M4 on the second. All four of the pins on one side are connected together but the PCB trace, so I suspect this may be a mosfet or power switch of some sort. The smaller IC is a six pin SMD package with the marking PAKG.
I've tried using Google to look up the markings on the ICs, but can't find anything useful.
Can anyone help identify any of this, or at least point me to where I can find more information?