Strange Battery issues

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http://forum.xda-developers.com – Ok so last night i connect my phone to the charger it has 16 percent battery left i went to bed got up 6 hours later it only charged 3percent from what it was at . I plug the phone in at work charges from 19 percent to 32 percent go take the phone off the charger it drops to 16 percent. last month I changed the charging cable and even purchased a new battery as i was experiencing the exact same issues up until I replaced the battery and cable but now the issue is back. i was running Cyanongen mod 9 Nighties but have been using version 10 alphas since then. Anyone know what to mak (HowTos)