As one of the world's top 500 companies, Bosch is a well-deserved top leader in the automotive industry and energy fields, and as the world's largest supplier of automotive technology, Bosch sales reached 78.1 billion euros in 2017.
 
Bosch is a senior auto parts professional, from wipers, spark plugs, filters, brake pads, brake discs, to car washes and car purifiers. The battery is the main product of Bosch's many automotive products. As early as 1922, Bosch was the first to apply batteries to motorcycles.
 
Bosch has two series of batteries: the ordinary maintenance-free series and the EFB start-stop series. The maintenance-free series is a type of micro-water depletion battery to distinguish batteries that used to need to be regularly replenished with distilled water. The maintenance-free product not only avoids the cumbersome operation of frequent water addition and maintenance, but also greatly reduces the potential safety hazards of sulfuric acid leakage in the battery, and is currently the mainstream product of automobile battery. The EFB series is to match the current popular vehicles with start-stop function, the characteristics of fast charging and fast discharging match the current urban road conditions, and the price is higher, generally more than 1400 yuan.
 
The high-tin alloy grid technology used in Bosch batteries greatly enhances the corrosion resistance and tensile strength of the grids, which can prolong the use of batteries in high-temperature environments. On the shell, a unique labyrinth top cover design is adopted, and the explosion-proof disc is installed inside to effectively achieve gas-liquid separation. This design effectively eliminates the introduction of impurities, and at the same time protects the user from acid spills, and avoids sulfuric acid corrosion of the end posts, battery racks and trays.
 
In addition, Bosch has adopted an exclusive elastic stiffener that supports the plates like springs and acts as a shock absorber. Cars sometimes inevitably shake violently due to objective reasons of road inequality, which puts forward extremely high requirements for the seismic ability of the battery.
 
Bosch batteries have an 18-month warranty, the same capacity and cold-start capability as the Varta Blue Label, and are not as durable as the maintenance-free batteries.