One of the most important details of the cellular phone is its battery. All know how to use battery charger for mobile phone, but not many know how to do it. When we have drained the battery, we connect the charger and charge up to readiness. However, at one point, begin to notice that the time of fully charged battery is smaller than it was before. So. Let's start with the nickel-cadmium (NiCd) and nickel-metal hydride (NiMH) batteries. Everyone knows that at the end of the battery in the normal charger green light to indicate that the battery is fully charged and ready to go work. If the battery is charging the phone, then the latter will inform you about his usual manner.
As a result, you believe that your battery is charged, has full capacity and could trust him at 100%. But such data can not be trusted! "Green Light" conventional charger does not guarantee sufficient (nominal) capacity and serviceability of the battery. The whole point is that the usual charger charges (fills) battery electric power only as long as there are so-called "free space", while the amount of injected energy into the battery can not be estimated! This suggests a simple analogy with the glass, which we examined in detail when discussing the electrical capacity of the battery in the article. If the empty glass can be poured into 200 ml of water, in the same glass, but partially filled, such as sand or small stones – a much less.