Default [Q] Battery temp and MV


I have S3 mini running with Maclaw's CM11 20130120 (now). My phone have started rebooting 3 weeks ago. Battery shows %89 percent and after reboot it increases to %14. I faced with this issue previous CM11 release. Today I want to check battery health and I look at it on CPU-Z. Battery temperature is -106695720,0 C and Voltage is 4mV. I have checked it from different apps these number are same there. You can see it on attached screenshot.

So How can i make my battery work stable again? How can i fix these strage values?

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