thank you all for you usefull information
i was go to bettery shop he told me that my bettry is ok there is problem in some short circuits as it switch off the self and touch slightly to terminls .. its shows the little spark ...
the my electrican told me that their is pblm in my bettry bcz ther is no short ckt .. it checked through some meter .... now i m tottaly confused what to do?