Key features of battery
Key features include a nominal capacity of the battery nominal voltage, load and speed, strength, longevity and self-discharge rate.
Rated capacity. In the design requirements of conditions (such as temperature, flow, voltage termination, etc.), the Laptop battery should be able to release the minimum capacity, in ampere-hours to sign C said. Capacity greatly influenced by the rate of rejection, so often in the lower right corner of the letter C, with Arabic numerals indicate the flow, such as C20 = 50, shows that the building under the ratio from 20:00 to 50-an-hour. The theoretical capacity of the reaction cell of the battery depending on the type of use of active electrode material and calculated according to Faraday’s law of electrochemical active substances derived equivalent accuracy. Since the battery in the side effects that occur in May and design needs of the real capacity of the battery is often lower than the theoretical capacity.
The nominal voltage. The battery temperature under typical operating voltage, also known as the nominal voltage. It is the choice of different types of batteries for reference. The battery voltage with the different conditions of use varies. The battery open circuit voltage is equal to the positive and negative electrodes to balance the difference between the potential of the electrode. Only with the type of electrode active material, but not with the number of active substances has nothing to do. The battery voltage is essentially constant pressure, but under certain conditions, the electrode reaction caused by the metal crystals, or some of the phase transition in a membrane phase causes a slight voltage variation, a phenomenon known as noise. Small but very wide range of volatility, the frequency so that the circuit can be distinguished from self-excited noise.
Global and discharge rate. Sometimes magnification ratio and the two types of representation. Charge and discharge time when the rate is expressed by the charge and discharge rate, numerically equal to the rated capacity of the battery (amp hours), divided by the provisions of the charge and discharge current (An) obtained the number of hours. Magnification is the charge and discharge of another representation, the reciprocal of the rate of its value too. The rate of discharge of the battery is based on the original by a determined resistance to both termination voltage discharge that. Discharge greater impact rate on Dell Latitude D820 battery performance.
Battery Impedance. Lakes have electrode - electrolyte interface area, it could be the battery is equivalent to a large capacity and low resistance, inductance in series circuit. However, the reality is much more complex, in particular, the impedance of the battery and the voltage level continues in time of change, the measured impedance is only valid for the specific measure of the state.
Life. Shelf life for the battery that is made to allow the store to start using the maximum time between Single years. Including the period of storage and use of a total duration of this period, including the validity of the battery. Save the battery life there is dry storage and shelf life of wet points. Is the life cycle of the battery under the conditions specified are met can reach the maximum charge and discharge cycles. The life cycle specified must also offers load testing systems discharge cycle, including load and speed, depth of discharge, and the range of temperature.
Self-discharge rate. TravelMate 290 battery in the storage process of self-rate capacity loss. Save time with the unit self-discharge accounts for the loss of storage capacity before the capacity expressed in percentage.