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Braille Batteries i34RS

Replace your stock, heavy battery with a direct replacement, lightweight performance Lithium battery that weighs in at only 18.9lbs
Upgrade for a standard Group 34R size battery.
Mfg Part #
ECS Part #
Availability: Direct Ship, Ship ETA Jul 7, 2020
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Product Details

Upgrade for a standard Group 34R size battery.

Whether you are looking to replace your battery to reduce weight for track purposes or just want to upgrade to a lithium battery for it's long life and exceptional reliability, Braille Battery has you cover with their Intensity line of Lithium-ION batteries. Designed to the same stock specifications in terms of size, for easy installation and proper fitment, these batteries are significantly light that stock batteries by a ridiculous amount! The i34 battery weighs in at only 18.91bs! This is a ~32 pound reduction in weight, while still producing a whopping 2665 Pulse Cranking Amps (PCA) and offering a 159 Lithium Amp Hour/Lead-Acid Equivalent capacity. This makes the i34RS another leader in the battery industry for performance to weight ratio by a significant margin!

Some may ask, "Why should I upgrade to a Lithium battery?"

Braille Lithium delivers a higher, cleaner voltage which improves the performance of every electrical component and has shown to provide:

  • Quicker starting (a full volt higher than lead and less voltage drop during cranking)
  • Improved engine management & data logging performance (more stable voltage)
  • Less horsepower draw from the alternator due to efficient charging (5 times faster than lead),
  • Lasts 3-5 times longer (especially under the harshest environments),
  • Much more reliable (less than 1% failure rate)
  • Significant weight savings. (up to 1/4 the weight)
  • Don’t self-discharge, so if the battery is disconnected (no draw or via power disconnect switch), they can sit for over a year and still have over 13 volts to start the vehicle.

To get all these benefits in one simple step makes it a very cost effective upgrade!!

Physical Specifications:

  • BCI Group:  34
  • Weight:  18.9lbs / 8.57kg
  • Length:  10.87" / 276mm
  • Width:  6.9" / 173mm
  • Height:  7.7" / 195mm
  • Polarity:  Right Side Positive

Performance Specifications:

  • Voltage:  12
  • Full Charge Voltage:  13.8
  • Pulse Cranking Amps (PCA):  2665
  • Lithium Amp Hour/Lead-Acid Equivalent (LAH/PbEq):  159
  • Life Cycle @ 10% DOD:  5000

** PbEq equals Lead-Acid Equivalent also known as LAH Lithium-Amp-Hours. This means that a 72 LAH PbEq (24AH) Lithium Iron Phosphate battery could perform the same near as a 72 AH Lead-acid battery under a high rate discharge in comparison.

When installing a lithium battery in a MINI that requires the battery to be coded in, Braille recommends setting the battery code to the lowest/smallest AGM battery setting possible.

Before purchasing a battery, please double check the size of your stock battery and the battery compartment. Many MINI's can use both a Group 34 or Group 35 size, but some vehicles are limited to Group 34 only due to constraints in the battery's total length.

This Part Fits the Following Vehicles

Make Model Submodel Engine
Audi B6 A4 FWD 1.8T
Audi B6 A4 FWD V6 30v
Audi B6 A4 Quattro 1.8T
Audi B6 A4 Quattro V6 30v
Audi B6 S4 All V8
Audi B7 A4 FWD 2.0T
Audi B7 A4 Quattro 2.0T
Audi B7 A4 Quattro V6 3.2L
Audi B7 RS4 All V8
Audi B7 S4 All V8
MINI All All All
MINI All John Cooper Works GP All
MINI All John Cooper Works MC40 All
MINI All S All
*The above product applications have been written by ECS Tuning. All warranties, product application, fitment, and performance are the responsibility of ECS Tuning. For additional information see the terms of use.

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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