it just a warning that something locked up your mb. all you need do is save the factory default and you be fine. if you want to repalce the battery you can it a standard battery that any battry shop will have. the issue is not snapping the cmos battery clip if you snap it off the mb then you have to replace the motherboard. most batteries good for the live of the mb. they need to be repalced when the data and time is not holding.