The starter battery is a secondary source of electricity. This means that after a deep discharge, its performance can be fully restored with the help of a charge - passing a current in the direction opposite to that in which the current flowed during discharge. The rechargeable battery operates on the principle of transforming electricity into chemical energy (when charging) and reverse transformation - chemical energy into electrical energy (when discharging).

1. 3 (E30)
2. 3 Saloon (E30)
3. 3 Touring (E30)
4. 3 (E36)
5. 3 Saloon (E36)
6. 164 (164_)
7. 164 Saloon (164_)
8. 168 (164_)
9. 5 (E28)
10. 5 Saloon (E28)
11. 5 (E34)
12. 5 Saloon (E34)
13. 5 Touring (E34)
14. 123 Saloon (W123)
15. 123 T-Model (S123)
16. 123 Break (S123)
17. 124 Saloon (W124)
18. 124 T-Model (S124)
19. 124 Break (S124)
20. 123 Coupe (C123)
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The functionality of the starter battery

The BOSCH brand Starter Battery is designed to start a gasoline or diesel engine of a vehicle. In this case, it gives off the bulk of energy exactly at the moment of starting, and then it is restored during operation from the generator. That is why the main parameter for the starter battery is the starting current. This figure shows the maximum current that the battery can supply to start a vehicle engine. If the current is low, the engine will be difficult to start. The second most important for a starter battery is such an indicator as capacity. It must also be taken into account when selecting a battery, otherwise there is a risk of purchasing a low-power battery that will not meet your needs.