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Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://d911api.datadial.net/images/schemaLogo.png https://d911api.datadial.net/images/schemaLogo.png +443456003478 https://d911api.datadial.net Facebook Instagram
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Porsche > 911 & 912 (1965-1989) > 911 1975-1977 3.0L Turbo (930) > Engine Electrical >

Batteries & Chargers

Batteries & Chargers

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DISPLAYING 33 to 39 (of 39 products)
1 2 3
Rennline Battery Relocation Kit without Kill Switch Mount. Porsche 911 - EL0337
3
Rennline Battery Relocation Kit without Kill Switch Mount. Porsche 911
EL0337
Product Information
Product Information
Rennline Battery Relocation Kit without Kill Switch Mount

To be fitted with 680 Odyssey Battery

rennline

Fits:
Porsche 911 LHD Only

Relocating a lightweight battery to the smugglers box is a standard modification to track and high-performance street 911's. The stock 911 battery is much heavier than necessary (upward of 40 pounds heavier than an Odyssey 680), and is located in the front left of the car, where it contributes to poor weight distribution. Until now, relocating a battery to the smugglers box (the smugglers box is the small compartment in the front trunk behind the fuel tank, on the passenger's side) required fabricating your own mounting and bracket system. Rennline's new relocation kit is a fully adjustable aluminum assembly that makes battery relocation an easy afternoon project. This newly designed unit is a complete bolt in assembly which requires absolutely no drilling and fully suspends the battery eliminating unwanted vibration. Kit includes all necessary stainless steel hardware and full installation instructions. We also offer an optional Smugglers Box Lid that is a perfect location to mount a cut off switch.

Note: Switch, remote pull, smugglers box cover, and battery are not included with this or any of the kits.

Note: Pictures may not show actual product.
Rennline Kill Switch Mount. Porsche 911/964/993 - EL21, EL61
3
Rennline Kill Switch Mount. Porsche 911/964/993
EL61
Product Information
Product Information
Rennline Kill Switch Mount.
You may also need the pull cable EL21 Works with all Rennline kill switches EL61


rennline  

Fits:
Porsche 911
Porsche 964
Porsche 993

This kill switch mount is specifically designed to attach to the inner fender bolts on all 1965-98 911’s. We have also added extra mounting holes that will allow this bracket to be used in many universal applications. It accepts most standard kill switches and up to 2 remotes pulls that are required in any organized race environment. Constructed from anodized aluminum and TIG welded to create a bullet proof design. Kill switch and remote pulls are sold separately.

Note: Pictures may not show actual product.

Richbrook Immobiliser Battery Switch - 1000.01, 100001, 1000 01
1
Richbrook Immobiliser Battery Switch
911100001
Product Information
Product Information
Immobiliser Battery Switch

The simple and effective Immobilaiser and Battery Cut-Off Switch.
Fits in minutes to all battery types.
Simply unscrew the black knob to disable your starter motor.

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

911100001
1000.01
100001
1000 01

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Smart Charge Battery Monitor With indicator lights 12V DC - RESC706, RSC706
5
Smart Charge Battery Monitor With indicator lights 12V DC
RSCBM
Product Information
Product Information
Smart Charge Battery Monitor
With indicator lights
12V DC

ring

Battery charger monitor, compatible with Ring smart chargers. Easily clips onto the smart charger connectors, to give indication of the battery charge level. Traffic light system gives easy to read indication of charge level. Leave connected to the battery to monitor its condition using the simple traffic light system. If charging required connect your smart charger to RSCBM to top up.

Compatible with: Ring RSC706 6A Advanced Battery Charger

• Battery charge monitor for use with 700 series smart chargers
• Gives instant indication of charge level of the battery
• Suitable for long-term connection to the battery, for instant charge level update
• Easy to install

Product dimensions (HxWxD): 21mm x 600mm x 30mm
Weight: 0.0640 kg
Voltag: 12V
Ultraboost Lithium Jump Starter Pack - RJS020T, RJS030T, RJS010T
6
Ultraboost Lithium Jump Starter Pack
RJS0
Product Information
Product Information

Ultraboost Portable 12V Jump Starters – 500A, 1000A & 1500A

Professional Lithium Car Battery Boosters for Petrol and Diesel Vehicles

The Ultraboost Jump Starter range is designed to provide reliable emergency starting power when you need it most. Available in 500A, 1000A and 1500A versions, these compact 12V lithium battery boosters are suitable for a wide range of petrol and diesel vehicles, delivering dependable performance in everyday driving and emergency situations.

If you are searching for a portable 12V jump starter for petrol cars, a diesel battery booster pack, or a compact lithium car jump starter for winter reliability, the Ultraboost range offers scalable power to suit your vehicle and usage requirements.

Available Power Options

Ultraboost 500A – Ideal for smaller petrol vehicles and everyday emergency backup.
Ultraboost 1000A – Suitable for engines up to 5ltr petrol and 2ltr diesel.
Ultraboost 1500A – Higher output for larger engines and increased starting demands.

This range allows drivers to choose the correct amperage for their vehicle size, engine capacity and frequency of use.

Emergency Boost for Completely Flat Batteries

Each Ultraboost model features an advanced Boost function, enabling you to start vehicles with completely depleted batteries. This makes it an essential portable jump starter for drivers who want protection against unexpected battery failure.

Whether your battery has failed in cold weather, after long storage, or due to electrical drain, the Ultraboost provides instant starting assistance without requiring another vehicle.

Fast Charging Power Bank Technology

The Ultraboost 1000A and 1500A models feature PD30W Fast Charge Technology, allowing rapid recharge of the unit itself while also delivering powerful USB-C charging for laptops, tablets and smartphones. A Quick Charge USB-A port provides additional versatility, transforming the jump starter into a portable in-car power bank.

For drivers looking for a jump starter with USB-C fast charging and mobile device support, Ultraboost offers a practical dual-purpose solution for road trips, track days and daily commuting.

Advanced Safety and Intelligent Protection

Safety is built into every Ultraboost unit. Ringtelligence technology includes reverse polarity protection and a spark-free design to prevent incorrect connection and ensure safe operation.

The Lock ‘n’ Load battery terminals provide a secure and stable connection to your vehicle battery, while easy-reach cables make installation simple, even on larger batteries or in tighter engine bays.

If you are looking for a safe lithium jump starter with reverse polarity protection and secure terminal clamps, Ultraboost delivers professional-level peace of mind.

Compact, Portable and Built for Convenience

An integrated bright LED torch illuminates battery terminals during low-light or roadside conditions. The compact yet durable casing ensures portability without compromising strength.

Each unit includes a carry case and USB-C charging cables, making it easy to store in your boot or garage as part of your essential vehicle emergency kit.

Key Features

  • Available in 500A, 1000A and 1500A models
  • Boost function for completely flat batteries
  • Suitable for petrol and diesel vehicles
  • PD30W fast charging (1000A and 1500A models)
  • USB-C and Quick Charge USB-A ports
  • Reverse polarity protection and spark-free design
  • Secure Lock ‘n’ Load battery terminals
  • Clear LED battery level indicators
  • Integrated high-brightness LED torch
  • Compact and portable design
  • Supplied with carry case and USB-C charging cables

Technical Specifications (1000A Model)
Dimensions (mm): 204 x 125 x 105
Weight: 0.91 kg
Voltage: 12V
Output: 250A
Battery Type: Rechargeable Lithium-Ion (1 x custom battery included)

Why You May Need a Portable Jump Starter

A portable lithium jump starter is an essential accessory for:

  • Preventing roadside breakdown disruption
  • Cold-weather battery failures
  • Vehicles stored for long periods
  • Track cars and weekend vehicles
  • Drivers without access to another vehicle for jump-starting
  • Owners wanting a combined jump starter and power bank

For Porsche owners and performance vehicle drivers, maintaining battery reliability is especially important due to electrical systems and intermittent use patterns.

At Design911, we supply professional battery care and emergency power solutions designed for enthusiasts and everyday drivers who value reliability.

Wing nut for ground strap to body. Porsche 911 69-77 / 930 76-77 - 99904400103
2
Wing nut for ground strap to body. Porsche 911 69-77 / 930 76-77
Special Order item
99904400103
Product Information
Product Information
Wing nut for ground strap to body.

porsche

Fits:
Porsche 911 (1969-1977)
Porsche 930 (1976-1977)

Click 'Zoom in' for large parts diagram.
Diagram ref no 5

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

99904400103
99904400103

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Wing nut for ground strap to body. Porsche 911 74-77 / 930 76-77 - 99904400103, 99904400102, 900-029-003-40
3
Wing nut for ground strap to body. Porsche 911 74-77 / 930 76-77
99904400103/1
Product Information
Product Information
Wing nut for ground strap to body.

oematch

Fits:
Porsche 911 (1974-1977)
Porsche 930 (1976-1977)

Click 'Zoom in' for large parts diagram.
Diagram ref no 5

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

99904400103
99904400103
99904400102
900-029-003-40

The product you are viewing cross references to these numbers
DISPLAYING 33 to 39 (of 39 products)
1 2 3
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About Batteries & Chargers

Batteries & Battery Chargers – Reliable Power Solutions for Porsche Performance

Batteries and battery chargers are essential for maintaining your Porsche’s performance, reliability, and electrical health. The battery supplies the power required to start your engine and run all onboard electronics, while a quality charger ensures your battery remains in peak condition during storage or periods of infrequent use. Together, they keep your Porsche ready to perform — whether on the road, at the track, or in the garage.

At Design911, we stock a full range of genuine and manufacturer-quality batteries and battery chargers suitable for the transaxle cars, 911, Boxster, Cayman, Cayenne, Macan, and Panamera models. Our selection includes AGM, lithium, and conventional batteries, along with intelligent smart chargers that optimise battery health, extend lifespan, and ensure efficient energy delivery for every type of Porsche.

What Do Car Batteries and Chargers Do?

  • Car batteries supply electrical power for engine starting, ignition, and all onboard systems, including lighting, infotainment, and climate control.
  • Battery chargers maintain optimal voltage and charge levels, especially during long-term storage, preventing sulfation and premature battery failure.

These components work together to ensure consistent performance, quick starts, and reliable energy storage, especially in high-performance vehicles that demand precision power management.

Why Do Batteries Fail?

Even high-performance batteries degrade over time. Common causes of failure include:

  • Age-related wear reducing charge capacity.
  • Parasitic electrical drain from onboard electronics.
  • Temperature extremes accelerating internal deterioration.
  • Infrequent use leading to discharge or sulfation.
  • Poor charging habits or alternator issues causing undercharging or overcharging.

Warning signs include slow cranking, dim lights, battery warning lights, or complete electrical loss.

Why Replace or Maintain Your Battery?

Replacing a weak or failing battery ensures your Porsche always starts reliably and powers its advanced electronics safely. Using a quality charger also helps maintain optimal battery condition, extending lifespan and performance.

Benefits include:

  • Improved starting reliability and voltage stability.
  • Protection against battery drain and electrical faults.
  • Longer service life through proper maintenance charging.
  • Manufacturer-quality performance and compatibility with Porsche systems.

Our chargers feature smart technology that automatically monitors and adjusts charging rates — perfect for seasonal storage or vehicles with limited use.

1. How long does a Porsche battery last?
Most Porsche batteries last between 4 and 6 years, depending on usage and climate. Regular use, proper charging, and avoiding deep discharges can significantly extend battery life. Using a smart charger during long-term storage helps maintain health and performance.

2. What are the signs of a failing Porsche battery?
Common signs include slow engine cranking, dim lights, flickering dashboard electronics, or battery warning lights. If your Porsche struggles to start after being parked for a few days, the battery may be weak or not holding charge.

3. Do I need a special charger for my Porsche battery?
Yes — modern Porsches often use AGM or lithium-ion batteries that require intelligent chargers with microprocessor control. These chargers adjust voltage and current automatically, preventing overcharging and extending battery lifespan.

4. Can I use a trickle charger on my Porsche?
While trickle chargers can keep a battery topped up, smart battery chargers are safer and more effective for Porsche vehicles. They monitor charge levels and automatically switch to maintenance mode once full, preventing damage or overheating.

5. How do I prevent Porsche battery drain when not driving?
If your Porsche is parked for long periods, connect a smart charger or maintainer, disable unnecessary electrical systems, and avoid leaving key fobs nearby (which can keep electronics active). This ensures the battery stays charged and ready to go.

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