[Q&A][Help]Bad Battry drain :(

Hi all guys and devs.
i have bad battry drain in any mod and rom even stock samy lollipop.
my battry is new & fresh and without any problem.
but how long has this problem.
other problem
some time charging stop and phone not charging up.
while the cable is in the charging gate disconect and conect again twice or more or disconect complatly.
Charging time
It takes about four hours to charge the phone up to 100% :(
please help i dont know what should i do :(

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