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Accumulator battery
Accumulator - a device for storing energy in chemical form which can be used as electricity.
The battery works because two different metals, being in an acid solution, produce electricity.
The battery has a 100% efficiency at 27 ?� C. At -18 ?� C the efficiency of the battery drops to 40%. Now, in order to start the engine, it is necessary to have more than two times more energy than is required at 27 ?� C.
Starting capacity (starting amperes) shows ability of the battery to start the car in very cold weather. It shows the number of amperes, which generates the battery for 30 seconds at -18 ?� C without the voltage drops below 7.2 volts (the minimum level required for the reliable start). The higher the score, the greater the starting power of the battery.
Standby power shows the length of time in minutes, during which the battery provides 25 amps at 27 ?� C. This factor is the time during which the battery ensures the operation of all the auxiliary equipment in the car at night and in bad weather at the faulty generator charge.
In winter conditions at -18 ?� C and below the battery is poorly charged in connection with the increase of internal resistance. For short trips in the winter the energy spent battery to run, is not compensated. As a result, the battery operates on the wear continuously discharged and eventually fails.
In the summer months after long trips the engine heats up, and often happens that it is difficult to start again. Such "hot starts" sometimes demand as much capacity, how much and in cold weather, or more. This especially applies to vysokokompressionnye engines with large displacement and cars with air conditioning. This once again underlines the importance of correct choice of battery in accordance with the motor car.
A warning  Work is necessary to wear safety goggles. We can not allow dripping acid and particles containing lead compounds in eyes, on skin or on clothing.
The electrolyte is very aggressive. Use protective gloves and goggles. Do not tilt the battery - from the vents can result electrolyte. If you get in your eyes, immediately rinse the eyes with clean water for several minutes. Then consult a doctor immediately. In case of contact with skin or clothes, immediately neutralize acid alkaline soap and wash the appropriate place with plenty of clean water. If you mistakenly hit the inside of the body electrolyte, immediately contact your doctor.
When charging batteries produce explosive gas mixture.
When working with cables and electrical devices is forbidden the use of fire, sparking devices open by fire-dangerous light devices and smoking. Avoid sparking when handling cables and electrical devices. Never short the battery terminals directly - there is a great danger of grasses we because of the strong spark.
Before carrying out any work on the electrical system of the car disconnect the negative lead from the battery. When replacing bulbs is enough to turn off the respective switches.
When disconnecting the battery from the power-supply system, disconnect the negative cable first, then positive. With the engine running, you can not disconnect the battery, since otherwise be damaged electronic equipment electrical system.
When installing the battery on the vehicle, you must first connect the positive lead and then - negative.
To protect the battery housing from the effects of ultraviolet light, the battery should not be stored in direct sunlight.
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