[Optimus L3, L5, L7 Original Android Development] -CALIBAN666-:
Maybe it helps for understand a battery in our devices.

The lithium -ion batteries of our smartphones should not be permanently fully discharged and recharged. Because the electrodes of a lithium -ion batteries are heavily loaded with a full charge and discharge, which will shorten the life of the battery. If we remain in a range between 30 and 70 percent charge , one moves in the "healthy" middle of the load on the battery and so receives a greater number of charge cycles. For the same reason , one should refrain from charging only in the range between 0 to 30 percent and in the range 70 to 100 percent. Say, did not even charge quickly With a low battery for 20 minutes, dispense just a short charging session battery is almost full .

The chemical processes inside a battery to run from different when the battery is exposed to extreme temperatures . In extreme cold conditions the efficiency suffers , in extreme heat , the drain on the battery also increases - which can lead to a reduction in cycle life . Therefore, one should refrain from charging processes in the heat and keep at extremely low temperature the unit to warm or completely without it.

When renegotiation is defined as the attempt to "train" for a battery for. In this example, the device is connected twelve hours a piece to the charger and charged, the operation should be repeated several times in order to (re) achieve full performance. The idea dates back to the times of the nickel-cadmium battery that went on too long, for example shop "to its knees" and only provided a fraction of its power. To get the battery back to full power, the battery had to be repeatedly charged and discharged - the so-called conditioning. A lithium-ion battery has simply nothing, as we will explain below under "charging" even of a conditioning.

In electronics stores the customer is usually given to a newly acquired terminal mentioned above will also advice reconditioning - usually with the exact same statement . I suspect this advice has been fixed by a very different need for new devices : the calibration of the battery level indicator . A new smartphone example shows the first few days of use the battery level sometimes not reliable at . Why is that? Quite simply: the interaction between battery, charging electronics and software is still quite young and the circuit that is responsible for determining the state of charge has not yet gathered sufficient information to issue the charge state can aptly . One can imagine the quasi so that the circuit " counts " in the background , how long the battery needs until it is full or empty. Are the first few times through , sufficient information should be available to enable a reliable battery level indicator . The battery itself is likely , however, at this time - have changed only slightly - if at all. Only the display has become more accurate.

A modern lithium-ion battery with the common charging electronics is first charged in the fast charging process to around 80 percent of its output, followed by a much longer period a trickle charge with a lower and lower float voltage which is finally completely deactivated by the charging circuitry when the full charge state is reached. Only when the charge state of the device drops below a threshold of usually 95 percent, the battery charger resumes its activity. So what happens during a "reconditioning" or the "first incorporation more than twelve hours,"? Correct: nothing. The charger is charging a simple. By the way: If the cell phone to be charged times faster, then turn it off simply. The charging current must not at the same time as a consumer receive (mobile phone) is alive, but can concentrate solely on the battery charge.

Assuming that your device a modern Li Ion battery is used, the tips for a long-lasting battery on the following summary can be reduced :

Batteries not permanently fully discharge and then fully charge

Keep the battery in a permanent state of charge between 30 and 70 percent

Batteries do not recharge with a charge state of about 70 percent , but wait until the battery reaches a low battery condition

Not permanently recharge the battery with a low charge of less than 30 percent for a short time

Battery is completely discharged in regular but long intervals once and recharge - once a month is a good rule of thumb

Batteries at high temperatures load (reference value: 40 degrees Celsius )

Do not operate the battery at extremely low temperatures or load (reference value: less than 10 degrees Celsius )

Batteries for storage of devices to remove, cool place at about 50 percent state of charge, not fully charged

I can not call it anything else, for me is to try to keep my Android battery between 30 and 70 percent, an ordeal. But it is after all only a rule of thumb. One last tip for perfectionists to the conclusion: The use of power supplies that follow a manufacturer's specification is generally not a bad idea. The optimal interaction between charging electronics and power supply is ensured as most likely - for example a charging current, which guarantees the minimum load on the battery. It relies on high-quality third-party accessories that can just work well, but the three-euro charger should better stay up for grabs. At a minimum, this bargain ruined the nerves of the owner are: The low prices usually lead to the use of low-grade copper, which leads to an increased resistance of the charging current and extended charging.