We choose the battery for the automotive
To choose an electric battery for an automotive, this question was visaged by anybody, each beginner and skilled driver with expertise.
The first and, perhaps, the foremost vital factor is that the battery should embody the country of manufacture and mill, ideally with AN address. every battery ought to be among a technical certificate, however, the presence of directions isn't necessary. this is often because of the actual fact that within the West the batteries square measure nearly not sold-out at retail, they're put in by specialists at service stations. Third, a high-quality battery is inconceivable while not a high-quality case, sensible plugs, and sleek output terminals, typically greased with technical protecting grease against oxidization and coated with colored plastic caps from higher than. The voltage at the terminals of the purchased battery ought to be a minimum of twelve.5 volts. The density altogether half-dozen banks isn't but one.25 g/cm3 (see table of solution density dependence on temperature on page twenty-five) and is that the same altogether banks. If the density measuring within the store is tough, it's doable to limit the measuring to the voltage measuring by a meter. It should be a minimum of twelve.5 volts. once simulating a starter discharge with a load plug (current approx. 160 A), the battery voltage ought to stay inside the vary of ten.5-11 volts for 5-8 s. The battery label should have a relation to the quality (DIN, SAE, EN, GOST or others). The SAE marking doesn't indicate the capability in ampere-hours (Ah). The indication of the capability in Ah within the SAE customary is AN indirect sign of counterfeiting. Most makers code the date of manufacture of the battery. Today's maintenance-free batteries may behold on for a protracted enough time while not vital loss of performance, that the date of manufacture is a smaller amount relevant. However, you ought to not get an electric battery that has been available for over six months.
The main parameters for selecting an electric battery are:
electric (nominal) capability, Ah;
polarity;
inpour current, A;
dimensions of the battery case.
To start the automotive engine from the battery is needed because the necessary energy reserve - enough electrical phenomenon, and high power at discharge. the electrical capacitance characterizes the number of electricity which will be provided by the battery in continuous discharge mode. The nominal is the twenty-hour discharge capacity of the battery. it's indicated on the label of the battery. to work out the nominal capability of the battery is incessantly discharged at a temperature of twenty-five C current adequate zero.05C20 (0.05 from the nominal capacity) till the voltage at the terminals of the 12-volt battery doesn't fall to ten.5 V. for instance, for a sixty Ah battery, the discharge current is 3A. don't use a brand new battery with a lower electrical phenomenon than that suggested for this sort of automotive. the actual fact is that in some modes of engine operation (idling) and low daily mileage of the automotive, the battery "helps" the generator to power the turned on customers. If the battery's own electrical phenomenon is low, the discharge depth might reach 40-50%, which is able to cut back the battery's performance within the beginning mode. Repetitive deep discharges can cut back the lifetime of the battery.
Thus, every kind of automotive ought to choose an electric battery of an explicit capability.
The inpour current is indicated in keeping with the capability for every battery kind and is employed to check for compliance with the quality. The inpour current of a brand new battery ought to be no not up to that of the previous (replaceable) one, and for cars with high power consumption, it's necessary to use the battery with high values of avtoindent.ru inpour currents, for instance, the battery "Animal". the choice of the battery in terms of overall dimensions and polarity is set by the distinctive options of the automotive (the web site underneath the battery, the length of wires). The polarity is straight once the terminal "minus" on the correct is reversed once the terminal "plus" on the correct. So, selecting the battery, it's necessary to require under consideration the worth of the inpour current, the worth of electrical phenomenon, the situation of the pole terminals, the dimensions (mainly by length), and therefore the technique of attachment of the battery and, of course, the name of the complete and manufacturer.