Spare parts, diagnostics, workshop equipment, workshop concepts

New Functions Make the Bosch C3 and C7 Battery Chargers More User-Friendly Simple and Intuitive to Use

  • Charge or maintain the charge of car batteries simply and safely
  • Suitable for all types of lead-acid battery
  • New memory function saves last-used settings
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  • September 11, 2012
  • Spare parts, diagnostics, workshop equipment, workshop concepts
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press release

The Bosch C3 and C7 battery chargers make charging depleted car batte-ries quick and easy. These modern Bosch battery chargers are also a good choice for those looking to maintain the charge on their motorcycle, con-vertible or motorboat batteries while they are not in regular use. The Bosch C3 and C7 battery chargers won the “Red Dot Design Award” in 2011 for their simple, ergonomic operation and great industrial design. Now Bosch has simplified the operation of both charging units even further with the addition of a memory function and a two-piece charging cable that features a plug-in interface.

New functions allow car batteries to be charged safely and simply
If the battery chargers are disconnect, either from the power supply or from the battery, the new memory function saves the last-used settings until the battery chargers are reconnected. For example, if a power outing interrupts a charging or charge-maintenance session, the battery chargers will resume charging as they did before as soon as power is restored. The new two-piece charging cable allows a part of the cable to remain connected to the battery, thereby staying attached to the car, when the battery charger is disconnected. An additional fuse in this part of the charging cable ensures that the cable will not catch fire or cause a short circuit – even if it is damaged. Both charging units feature a central control button, which provides simple operation and allows intuitive control of all settings. Thanks to these intuitive controls and a comprehensive safety concept, operator error is almost completely ruled out.

Appropriate for many different applications
The Bosch C3 and C7 battery chargers can automatically and safely charge all types of lead-acid batteries, from the classic starter battery to wet and gel batteries all the way to AGM batteries. The C3 model, which supports 6 and 12V batteries, is appropriate for everything from small scooters and motorbikes up to passenger cars. The larger C7 model is intended for use with the 12 and 24V batteries found in larger motorcycles, cars, and vans. The new Bosch chargers can also be used to charge other lead-acid batteries, such as external, portable batteries in caravans or boats.

Safe and reliable charging
Bosch battery chargers eliminate all problems with sparks or damage to vehicle electronics resulting from overvoltage. What this means is that users do not need to worry about charging their car’s battery while it is installed in the vehicle. The integrated protection against polarity reversal ensures that if the charging clips are attached to the wrong battery terminals by mistake, the battery charger will display a red LED to alert the user. Only once everything is connected correctly and the charging mode chosen the indicator LED switches to green and the charging cycle begins. For maintaining the charge of the batteries of seasonal vehicles, the Bosch battery chargers can be left permanently connected to the battery, ensuring that it maintains a constant full charge.

Regeneration of batteries that have been discharged deeply
The Bosch C7 battery charger offers three additional operating modes: a maintenance mode, a power-supply mode and a regeneration mode. The latter one allows batteries to be regenerated if they have been discharged deeply, for example, if a car’s side marker lights are left on overnight. In power-supply mode, the Bosch C7 works as a 13.6V power supply, allowing it to power different appliances and devices, such as an electric cool box. Additionally, some modern cars even require a maintenance charge to replace the battery, because the many control units in these cars would lose their personalized settings if disconnected completely from their power supply.

Practical accessories
The Bosch C7 battery charger comes with a convenient wall mount, while the C3 comes with a practical mounting hook that can be used to hang the charger on or near the vehicle during charging, for example, from a car’s hood. Both chargers are compatible with both mounting options, and for this reason both mounts are also offered separately as accessories. These mounting options allow the chargers to be used either in a stationary setup, attached to the wall of the garage, or in a portable mode fixed directly onto the vehicle.

The Automotive Aftermarket division (AA) provides the aftermarket and repair shops worldwide with a complete range of diagnostic and repair shop equipment and a wide range of spare parts – from new and exchange parts to repair solutions – for passenger cars and commercial vehicles. Its product portfolio includes products made as Bosch original equipment, as well as aftermarket products and services developed and manufactured in-house. More than 18,000 associates in 150 countries, as well as a global logistics network, ensure that some 650,000 different spare parts reach customers quickly and on time. In its “Automotive Service Solutions” operations, AA supplies testing and repair-shop technology, diagnostic software, service training, and information services. In addition, the division is responsible for the “Bosch Service” repair-shop franchise, one of the world’s largest independent chains of repair-shops, with some 17,000 workshops. In addition, AA is responsible for more than 1,000 “AutoCrew” partners.

Additional information can be accessed at

The Bosch Group is a leading global supplier of technology and services. It employs roughly 375,000 associates worldwide (as of December 31, 2015). The company generated sales of 70.6 billion euros in 2015. Its operations are divided into four business sectors: Mobility Solutions, Industrial Technology, Consumer Goods, and Energy and Building Technology. The Bosch Group comprises Robert Bosch GmbH and its roughly 440 subsidiaries and regional companies in some 60 countries. Including sales and service partners, Bosch’s global manufacturing and sales network covers some 150 countries. The basis for the company’s future growth is its innovative strength. Bosch employs 55,800 associates in research and development at 118 locations across the globe. The Bosch Group’s strategic objective is to deliver innovations for a connected life. Bosch improves quality of life worldwide with products and services that are innovative and spark enthusiasm. In short, Bosch creates technology that is “Invented for life.”

Further information is available online at and,

PI7899 - September 11, 2012

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