Surcharge for Reconditioned Unit - Hybrid Battery 400V, Exchange unit 992915100AX. This part number supersedes to 992915100CU Genuine Porsche part 992915100AU

Car battery 80Ah (Option code: I196)

Please note: due to logistic restrictions, the batteries are collection from shop only.



Fits:
Porsche 982 (718) Boxster 2017-18
Porsche 981 Boxster Spyder 2016
Porsche 982C (718C) Cayman 2017-18
Porsche 981 Cayman GT4 2016
Porsche 991.2 Carrera 2017-18
Porsche 991 GT3 2014-18

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992915105B

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PLEASE NOTE:
Due to its size, weight or fragility, this item requires additional protective packaging to make sure it reaches you undamaged. A small packing surcharge is applied to cover these specialist materials and the extra care taken preparing your order for transit.

Ground strap 70ah battery. 



Fits;
Porsche 992 Carrera 2 / Carrera 4 - 2019 Onwards
Porsche 992 Carrera 2S / Carrera 4S- 2019 Onwards
Porsche 992 Targa 4 / Targa 4S - 2019 Onwards

Click 'Zoom in' for large parts diagram.
Diagram ref no 1

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99291518

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9m Lightweight Lithium Battery – Maximum Weight Saving, Instant Starting Power

The 9m lightweight lithium battery is a high-performance electrical upgrade designed for Porsche 911, Cayman and Boxster models. Developed in the UK, this advanced battery offers a minimum 50% weight saving compared to conventional lead-acid and AGM batteries, while delivering outstanding starting performance and modern user-friendly features.

Fits:
Porsche 964
Porsche 993
Porsche 996
Porsche 997
Porsche 991
Porsche 986 Boxster
Porsche 987 Boxster / Cayman
Porsche 981 Boxster / Cayman
Porsche 718 Boxster / Cayman

Weighing just 8.6kg, the 9m lithium battery significantly reduces vehicle mass—improving throttle response, handling balance and overall driving dynamics. Despite its compact weight, it provides an impressive 1330 cold cranking amps (CCA) and 60Ah capacity (120Ah PBeq equivalent), ensuring reliable starts even in demanding conditions.

Battery Dimensions - 276 x 175 x 190mm

What the 9m Lightweight Lithium Battery Does

This performance battery:

• Supplies high cranking power for fast, confident engine starts
  
• Reduces overall vehicle weight, improving performance and handling
  
• Maintains stable voltage output under load
  
• Provides modern monitoring features via an LCD touchscreen display
  
• Allows emergency restart using the integrated jump-start button
  
• Fits directly in place of the original-fit battery with no modifications

Ideal for road, fast-road and track-focused Porsche applications.

Why Traditional Batteries Fail

Conventional lead-acid and AGM batteries commonly fail due to:

• Excessive weight, impacting vehicle performance
  
• Voltage drop over time, especially during storage
  
• Poor tolerance to repeated discharge cycles
• Heat sensitivity, accelerating internal degradation
  
• Reduced cold cranking performance as the battery ages

These issues are particularly noticeable in performance-oriented Porsche models.

Why the 9m Lithium Battery Should Be Fitted

Upgrading to the 9m lightweight lithium battery delivers:

• Over 50% weight reduction compared to traditional batteries
  
• Exceptional 1330 CCA starting power
• Compact, efficient design (276 × 175 × 190mm)
  
• Direct replacement fitment for easy installation
  
• Integrated LCD voltage display & restart button
• 2-year limited warranty for peace of mind

This battery is an ideal solution for owners seeking improved performance, reliability and modern battery technology.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

9M9A791510500

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