I have the Xperia T, my battery indicator % remain 100% after use, when i power off my device and turn on again the battery have a big fall (to 70-80% deppend of hours of use) and over time it turns to 100% without charge, its crazy. It happens in T_Hybrid_V17 but not happens from beggining of install the ROM... one day suddenly occurs...
My bootloader is locked, the phone is rooted and ROM is stock based with a CWM for locked bootloader.
Ok, I read about the problem, i have not the option of wipe battery stats in my CWM, i read about "battery calibration" and installed and followed instructions of apk "battery calibration", dont works for me... I manually do the same process... i deleted the batterystats.bin at 100% charge... let the device power off on discharge... charge again to 100% and let it discharge... it dont works for me...
Well... i think ok... there are a new ROM with another Kernel included... new CWM included in XDA I try to change from JB 4.1.2 to JB 4.3 Ultimate Pure XT 4.0... and later OTA 4.1 and 4.2 well, the problem changes... is similar but not same... I do it "the calibration" and try the same as past... the new problem is... battery 100% and after a lot of use maybe it drops in real time to... maybe 97% ok... power off and on... 76% I use the device the bateery lvl drops to 73% after time and still there, it dont go up to 100% this is the difference, but the battery dont drop in real time correctly I attach an image of battery graphic. What can i do? i read similar problems on other devices, like SGSII, that is solved with "wipe battery stats" in CWM but my new CWM included in Pure XT (touch Philz 6.X) still not having this option in advanced...
I have Xposed installed now, but not when problem begin, i dont know what more to do. The battery duration appears to be correct but the % is not real.
I search in XDA forums about it, i see "solutions" on other devices, I read and read, but dont work for me.
Sorry for my english, i hope that you can understand this.
The problem was a hardware issue. I leave it in a technichal assistance , and they repaired it in 2 weeks, a main board problem, new mainboard and new IMEI... solved.