Bosch S4 Car Battery – Powerful Performance for All Vehicles. Battery Capacity (Ah): 70. 1 2 3 4 5 6 7 8 9 10 11 12. 4-Year Warranty – Extended peace of mind backed by Bosch quality. A car battery provides the electrical energy needed to start the engine and powers electrical components such as lights, radio, and air conditioning when the engine is off.
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