If rapid discharge of the battery was systemic in nature, it makes sense to pay attention to fairly simple rules for battery care cell phone. Try to fully discharge the battery. To do this, place the phone and let it "die" myself. Then remove the battery from the compartment and re-insert it back after a couple of minutes. While there is a waiting time, inspect the contacts on the body of the battery. Wipe them with a dry, lint-free cloth and do not use any cleaning fluids. Insert the battery into the phone and let it charge for the required eight hours. This procedure can partially restore the battery capacity.However, in the event that the cell phone was in the closet along with the inserted battery will help only the so-called "swaying". Need to submit 5-6 of the battery's terminals. Such a blow would embolden the battery voltage appears, and this means that charging phone batteries can be carried out in the usual way.The rapid discharge of the phone may also be due to the included functions. In recent time, mobile phones become more like computers. Wireless modules and file transfer, GPS , Internet traffic - all these rich capabilities of mobile phones require constant replenishment of energy. Also takes a lot of resources on a big screen, which is so convenient to watch movies and play with toys. Speaking of toys, it should be noted that this is one of the most costly items of the battery. After all, modern games for mobile platforms requires maximum operation of the graphics accelerator and CPU. The combination of constantly operating at maximum display brightness and a large load on the processor and graphic accelerator causes the newly charged battery squeezed like a lemon for 3-4 hours of continuous use. To prevent this from happening, you must monitor the active services of the phone and disable the ones at the moment are no longer needed. It is, first and foremost, modules Wi-Fi ,Bluetooth and GPS navigation, as well as access to the Internet GPRS . Don't forget about the display backlight, which is also very gluttonous. Adjust it manually or in automatic mode. Recommended by many manufacturers of the time interval after which the backlight is desirable to disable for reasons of economy the battery life is 10-15 seconds.