Batteries & Chargers
To be fitted with 680 Odyssey Battery

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.
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
You may also need the pull cable EL21 Works with all Rennline kill switches EL61
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.
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
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
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With indicator lights
12V DC

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
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.