This listing is for BMW / Mercedes Benz POWER SONIC OEM AGM STYLE BACK UP BATTERY to suit most models with auto start-stop / direct / eco start BMW 5 SERIES F07 / F10 / F11 6 SERIES F06 / F12 / F13 7 SERIES F01 / F02 / F03 / F04 / G11 / G12 MERCEDES BENZ W176 A CLASS W246 B CLASS C117 / X117 CLA CLASS C218 X218 CLS CLASS W211 E CLASS (ALL-STANDARD) W212 E CLASS A207 / C207 E CLASS W204 CLASS X156 GLA CLASS C253 GLC CLASS X166 GL CLASS W166 GLE CLASS / ML CLASS W222 S CLASS C217 / A217 S CLASS R231 SL CLASS R172 SLC / SLK CLASS

What does a stop-start battery in a car do?

A stop-start battery in a car is specifically designed to work with vehicles equipped with a stop-start system. The stop-start system automatically shuts down and restarts the engine during short stops, such as when waiting at a traffic light or in heavy traffic. The purpose of this system is to reduce fuel consumption and emissions. The stop-start battery plays a crucial role by providing the necessary power to restart the engine quickly and efficiently.

How does a stop-start battery work in a car?

A stop-start battery operates differently from a traditional vehicle battery. It has enhanced technology to withstand frequent charge and discharge cycles, which is essential for the stop-start system. When the engine shuts off, the battery continues to supply power to critical vehicle components like the audio system, lights, and climate control. When the driver releases the brake pedal or engages the clutch, the stop-start battery rapidly starts the engine, ensuring a smooth and immediate restart. Its advanced design and higher capacity allow it to handle the extra power demands and frequent engine restarts associated with the stop-start system.