[Q] problem after replacing battery - Galaxy S 4 Q&A, Help & Troubleshooting

my I9500 battery swelled so i replaced it with another one. when i charge the phone, after 1 hour the battery life increased from 0% to 12%
what should i do?
THANKS

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[Q] G2 Korean Battery life

Hi I have G2 Korean version with removable 2600mah battery which is lower than the int'l version with 3000mah. I've use it for 2 months now until last week when it's the first time I forget to unplug it before I sleep so it was charged overnight. Then at noon time, the phone suddenly shut down with very thin lines. So I quickly charge it but there is a blinking red light. After an hour of plugging and out, thankfully, it charged properly but now I'm only getting 12 hours battery on light usage. I've heared that the non-removable 3000mah gets 19 hours battery, is this true? What's the normal battery life of the 2600mah? Should I get 16 hours (2600mahx19hr/3000mah)?
Did something gone wrong? Any recommendations? I still have warranty. I tried calibrating my battery by draining in and charging it fully while off , calibrating by software (Battery HD) and charging after 30 mins of usage of a fully charge battery (jump starting). Please note that same thing happened on the other battery which also charged overnight on the external charger pack.
Thanks.
Regards,
Tron

G2 korean

Hi I have G2 Korean version with removable 2600mah battery which is lower than the int'l version with 3000mah. I've use it for 2 months now until last week when it's the first time I forget to unplug it before I sleep so it was charged overnight. Then at noon time, the phone suddenly shut down with very thin lines. So I quickly charge it but there is a blinking red light. After an hour of plugging and out, thankfully, it charged properly but now I'm only getting 12 hours battery on light usage. I've heared that the non-removable 3000mah gets 19 hours battery, is this true? What's the normal battery life of the 2600mah? Should I get 16 hours (2600mahx19hr/3000mah)?
Did something gone wrong? Any recommendations? I still have warranty. I tried calibrating my battery by draining in and charging it fully while off , calibrating by software (Battery HD) and charging after 30 mins of usage of a fully charge battery (jump starting). Please note that same thing happened on the other battery which also charged overnight on the external charger pack.
Any link for rooting the korean version and any free app for freezing apps?
Thanks.
Regards,
Tron

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Battery Calibration for Extended Battery?

Guys! I just got my new HETP 6800 Mah Extended Battery today. I'm just wondering if I need to calibrate the battery for the first time. I have read in several reviews of other extended batteries that the battery should be drained completely before charging the for the first time and it should be repeated to 3 times in order to calibrate the battery. Is it advisable to do that?
Ps: I don't trust those battery calibration app so please refrain from recommending them.
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