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Banner BATTERY KNOWLEDGE

START-STOP

HOW DOES A START-STOP SYSTEM WORK?

 

More than 70 percent of all new cars are equipped with a start-stop system.

The start-stop system saves fuel at every red traffic light, is easy on the wallet and is good for the environment.

We explain how it works and why it is so important that you select the right battery for this.

Start-Stopp Auto

Start-stop system to save the environment.

The aim of the automotive industry is to further reduce fuel consumption and, in doing so, reduce emissions. The target set by the EU is 95g of CO2 per kilometre from 2020, which means that the majority of vehicles produced in Europe will be equipped with automatic start-stop systems or alternative drive systems. Already today, more than 70 percent of all new vehicles are equipped with a start-stop system in order to reach these fuel saving targets.

 

Vehicle manufacturers are making use of new battery technologies in the electrical system in order to:

  • Enable the optimum charging current consumption from brake energy recovery (energy recovery).
  • Ensure the optimum operating mode at lower levels of charge (SOC State Of Charge at approx. 70%).
  • To guarantee a longer and stronger cyclic load at engine stop when the alternator is not charging.

 

How the start-stop system works

When the vehicle is stationary (e.g. at a red traffic light), the automatic start-stop function shuts down the engine and restarts it again automatically when you step on or off the clutch or brake during a stop. The result of this is that the start-stop system ensures lower fuel consumption – especially in city traffic. Due to the environmental factors and the improved economic advantage of this, the start-stop system is becoming more popular across all vehicle classes.

The savings potential: Depending on the driving situation, you can consume up to 0.8 l less fuel per 100 km, especially in city traffic! A start-stop system can reduce CO2 emissions by up to 8%.

 

The basic requirement is

a particularly strong and cycle-resistant start-stop battery!

Start-stop systems place higher demands on the car battery. Therefore, more power and higher cycle stability are required. When the vehicle is stationary, the battery must provide the energy for the increased number of engine starts and for the electrical loads in the car.

 

  • AGM technology was specifically developed for vehicles with the highest energy requirements, brake energy recovery which are equipped with a start-stop system.
  • EFB technology is used in vehicles with high energy requirements and simpler start-stop systems.

Our start-stop batteries

Two different battery technologies (AGM and EFB) are used for vehicles with automatic start-stop systems:

AGM Batterien
Running Bull AGM
for start-stop vehicles with the highest energy requirements and brake energy recovery

for middle and upper class vehicles up to luxury class

 

  • Valve regulated lead acid battery (VRLA)
  • Triple cycle stability compared to conventional starter batteries: highest rating E4/M3 according to EN 50342-1
  • Highest starting performance thanks to very low internal resistance

 

AGM = Absorbent Glass Mat, the acid is absorbed in a glass mat, meaning that it cannot leak.

 

AGM Batteries

Backup Batterien
Running Bull BackUp
for start-stop vehicles with extremely high energy requirements

for redundant safety systems and electric steering systems

 

  • Valve regulated lead acid battery (VRLA)
  • Triple cycle stability compared to conventional starter batteries; rating E4/M3 according to EN 50342-1
  • Original equipment battery for Audi, BMW and Volvo

 

AGM = Absorbent Glass Mat, the acid is absorbed in a glass mat, meaning that it cannot leak.

 

BackUp Batteries

EFB Batterien
Running Bull EFB
for start-stop vehicles with high energy requirements

for small cars up to upper middle class

 

  • Glass coating on the separator and special active ingredient formula
  • Cycle life that is twice as long as conventional starter batteries; classification E3/M2 according to EN 50342-1
  • “Carbon loaded”: The carbon additives mean that the charging time is significantly reduced!

 

EFB = Enhanced Flooded Battery, the cycle-resistant starter battery.

 

EFB Batteries

 

What does energy recovery mean?

 

Energy recovery is the same as brake energy recovery. 

When you step off the acceleration or brake pedal, some of the energy generated by this is recovered through the energy recovery process.