BMW Banner AGM 12V Accumulator Battery 70Ah 720A 6806757 6805461

BMW Banner AGM 12V Accumulator Battery 70Ah 720A is an original battery from the BMW Batteries group, designed for vehicles equipped with AGM technology and a 12-volt electrical system. The use of an AGM design ensures stable starting parameters and predictable performance under load, which is particularly important in modern cars with extensive electronics.

Specifications and technical data

• SKU: 6806757
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9321980
• Substitutable numbers: 61216806757, 6806757, 61216805461, 6805461
• Weight: 150
• Category: Batteries

Technical characteristics of the BMW AGM battery

The presented battery belongs to the technologically advanced AGM (Absorbent Glass Mat) group, in which the electrolyte is absorbed in glass fiber separators. This construction promotes stable operation at high starting currents, reduces the risk of leaks, and improves resistance to intensive charge and discharge cycles. As a result, the battery works well with start-stop systems and extensive comfort and safety systems.

The battery is adapted for 12 V systems and offers capacity and starting current matched to the requirements of BMW power units, including engines with larger displacement and high energy demand during cold starts. The properly selected total weight of the battery translates into mounting stability in the factory tray and proper vibration damping during operation.

Purpose and compatibility in BMW vehicles

The BMW AGM battery was designed as a factory-installed component in selected models of this brand, ensuring proper fitment with standard brackets, cables, and energy management systems. Using an original OEM solution allows for maintaining compliance with the parameters specified by the vehicle manufacturer, including charging algorithms controlled by electronic modules.

The presence of a dedicated part number and interchangeable numbers facilitates compatibility verification with a specific car model. In practice, this means the possibility of directly replacing the existing battery with the presented unit, while maintaining factory safety and reliability standards. For vehicles equipped with a battery registration system in the ECU, it is recommended to perform the appropriate adaptation procedure after installation.

Benefits of using an AGM battery in a BMW

The use of AGM technology in BMW cars brings measurable operational benefits, especially in vehicles used intensively in city traffic and equipped with numerous electrical consumers. The most important advantages include:

• stable starting parameters under high electrical system load,
• better resistance to deeper discharges compared to classic lead-acid batteries,
• increased vibration resistance thanks to the compact design of plates and separators,
• reduced risk of electrolyte leakage due to AGM technology.

For the user, this means more predictable vehicle behavior in difficult conditions, a lower risk of starting problems, and better cooperation with comfort systems that require stable power supply even with frequent engine starts and stops.

Product condition and installation aspects

The offered battery from the BMW range is a used component, which allows for an economical replacement while maintaining the original manufacturer's specifications. Before installation, it is recommended to perform a standard check of the vehicle's electrical system, including the condition of ground cables, terminals, and the correctness of the mounting in the battery tray. Proper tightening of the terminals and stable seating of the battery reduces the risk of micro-damage to the plates and unwanted voltage drops.

Due to the AGM technology used, it is important to use chargers and service procedures adapted to this type of battery. This allows for maintaining operating parameters at the appropriate level and extending the service life in daily driving conditions.

Expanding the power system in a BMW – Batteries

If you are planning a comprehensive repair or upgrade of the electrical power area in your BMW and need other components from the same group, such as additional auxiliary batteries, energy storage units, or dedicated mounting modules, check the available parts in the BMW Batteries category.

To better select a used battery for a specific car model and avoid mistakes related to part numbers and their replacements, it is worth using practical expert tips – you can find detailed advice in the article No more bad purchases! How to professionally choose used car parts.