Its been three weeks I have rooted my phone. I have installed a lot of apps using link2sd on external sd card. I have noticed that since the rooting, the battery goes down very fast. 80% of charge goes down to below 40% overnight when on stand-by (without any data/wifi connection). Can the root be cause for that? It hasn't been even a year I bought that phone.
Note: I am using android 2.3.6 and juicedefender for improving battery usage.
/systempartition is not affected by a factory reset). – Izzy Mar 4 at 22:30