Car battery suddenly the two "self-help" BMW GT1 method

I believe that friends will often drive occasionally BMW GT1 encounter the same problem with Ms. Sun. 4S shop maintenance personnel to prevent battery suddenly no electricity, the best way is to usually pay more attention to their car, issued a distress signal. Such signals have the following forms: First, the starter does not turn or rotation so weak that the starter would not start; the headlights slightly darker than usual; the speaker volume small or even does not ring. Problems mentioned above, the owner must check if the battery problem. In order to minimize the battery power consumption, 4S shop expert to make two suggestions: First, to avoid a long time to turn on the lights or listen to the radio in case of engine flameout; Second, even if the engine is running, if the parking time is longer, should also be turn off the power to the unnecessary use of electrical equipment. Develop good car habits, you can avoid unnecessary predicament.
But in case the battery suddenly no electricity, there are several ways to "self-help".
Cart starting emergency starter we are most familiar with is the most effective method, but it is a last resort means, not frequently used, because doing some damage to the engine and clutch automatic transmission vehicles, especially  maxidas ds708  to avoid the use of this Methods starter.
Second, in order to avoid battery power can not be charged, the owners should be prepared in the car a jumper cable, which can be purchased at auto parts stores. However, connecting jumper cables, do not mistake the order of jumper cable connection. The first will be no electricity positive battery terminal and the rescue vehicle battery positive terminal is connected, and then rescue vehicle battery negative terminal and no electricity automobile engine room of a metal part is connected. Jumper cable connection, can start the engine of the rescue vehicles, and to slightly increase the rotational speed of the engine, and after about 5 minutes can be emergency charging to the battery power. After charging is completed, you should connect the jumper cables in the reverse order to remove the jumper cables.
The surest way to or contact rescue vehicles, and then connect the jumper cables, temporary charge by rescue vehicles, in order to start the engine.
Finally, experts have warned that the battery life is generally 2-3 years. After this period, the vehicle to pay special attention to the  mb star c3  usual battery maintenance, if necessary, should be replaced, in order to avoid danger.