Battery for BMW Z Series E85/6 (2003-2008)

Clear BMW chassis

Please ensure your correct model is selected

The vehicle's battery is responsible for starting and powering accessories while the vehicle is off and while running. During extremely hot or cold weather an aged battery will struggle to start or even charge properly.
Sort By:

Braille Performance Lightweight AGM Battery - B14115 - 11.5lbs ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Braille - Corporate Logo
T#:558037
Part#: B14115
Ships in 5 Business Days
$ 204.99 USD
Free Shipping on orders $49 and up
When building a car for the track, one of the most important factors to consider is weight. Stock batteries can weigh up to almost 50 pounds and are unnecessarily large, designed to power a host of systems not normally used in a track car (radios, lighting, etc.). What can you do to cut weight the weight without affecting your cars operation? This is where Braille Battery comes in with their long line of performance lightweight battery options! Designed to provide the highest cranking power possible while being up to 75% lighter, Braille Battery is one of the foremost leaders in automotive racing batteries with nothing but high quality, high output batteries in mind!
Show More Show Less
Braille Performance Lightweight Advanced AGM Battery - B2015 - 15lbs ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Braille - Corporate Logo
T#:558038
Part#: B2015
Ships in 8 Business Days
$ 237.99 USD
Free Shipping on orders $49 and up
When building a car for the track, one of the most important factors to consider is weight. Stock batteries can weigh up to almost 50 pounds and are unnecessarily large, designed to power a host of systems not normally used in a track car (radios, lighting, etc.). What can you do to cut weight the weight without affecting your cars operation? This is where Braille Battery comes in with their long line of performance lightweight battery options! Designed to provide the highest cranking power possible while being up to 75% lighter, Braille Battery is one of the foremost leaders in automotive racing batteries with nothing but high quality, high output batteries in mind! The B2015 is Braille's most popular non-carbon racing battery and is able to start larger engines easily for racing and offers daily driving capability for most 4 and 6 cylinders engine vehicles. Physical Specifications: BCI Group: All sizes Weight: 15lbs / 6.8kg Length: 6.8" / 173mm Width: 3.4" / 86mm Height: 6.1" / 155mm Polarity: Right Side Positive Performance Specifications: Voltage: 12 Full Charge Voltage: 13.2 Pulse Cranking Amps (PCA): 1067 Amp Hour (AH): 21 Life Cycle @ 10% DOD: 3100 *THIS BATTERY REQUIRES A CUSTOM MOUNTING SOLUTION. The size and weight are significantly smaller than a stock battery and will not be held in place by the stock battery mount*
Show More Show Less
Braille Performance Intensity Carbon Lithium-ION Battery - i48CX - 10...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
This item is classified as Hazardous Materials and requires special shipping and handling. We cannot ship this item out of the US or with priority shi
Braille - Corporate Logo
T#:558047
Part#: I48CX
Ships in 4 Business Days
$ 1,164.99 USD
Free Shipping on orders $49 and up
The ultra-lightweight, standard height I48CX lithium-ION battery from Braille Battery is a popular choice among BMW enthusiasts looking for a drop-in replacement battery that shaves off a ton of weight, 35 pounds in total! Thanks to the Group 48 design of this battery, no modifications are needed for installation. This is perfect for anyone looking to drive their car both on and off of the track, without any negative side effects, and wants a battery with a 10-15 year life span!
Show More Show Less

Braille Lightweight Advanced AGM Battery - B3121 - 21lbs
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Braille - Corporate Logo
T#:558042
Part#: B3121
Ships in 5 Business Days
$ 270.99 USD
Free Shipping on orders $49 and up
When building a car for the track, one of the most important factors to consider is weight. Stock batteries can weigh up to almost 50 pounds and are unnecessarily large, designed to power a host of systems not normally used in a track car (radios, lighting, etc.). What can you do to cut weight the weight without affecting your car's operation? This is where Braille Battery comes in with their long line of performance lightweight battery options! Designed to provide the highest cranking power possible while being up to 75% lighter, Braille Battery is one of the foremost leaders in automotive racing batteries with nothing but high quality, high output batteries in mind! The B3121 battery from Braille is their lightest do-everything battery available, offering 1380 pulse cranking amps that can crank over V8 engines with ease while still coming in at under 22 pounds, half of the weight of a standard Group 34 battery! This is thanks to their Advanced AGM racing technology that allows them to put a ton of power into a very small package. Physical Specifications: BCI Group: All sizes Weight: 21lbs / 9.5kg Length: 6.6" / 168mm Width: 5.2" / 132mm Height: 6.8" / 173mm Polarity: Right Side Positive Terminal Type: Steel terminal block with M6 bolt Performance Specifications: Voltage: 12v Recharge Voltage: 14.4V – 14.6V Maintenance charge voltage: 13.8V 5s Pulse Cranking Amps (PCA): 1380 10s PDC: 124 Amp Hour (Ah): 31 Watt Hour (Wh): 372 Life Cycle @ 10% DOD: 3100 Charging Temperature 0C to 50C Discharge Temperature range -40C to +60C Storage temperature -40C to +60C *THIS BATTERY REQUIRES A CUSTOM MOUNTING SOLUTION. The size and weight are significantly smaller than a stock battery and will not be held in place by the stock battery mount*
Show More Show Less

Braille Performance GreenLite Lithium-ION Battery - G30 - 5.5lbs ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Braille - Corporate Logo
T#:558046
Part#: G30
Ships in 7 Business Days
$ 522.99 USD
Free Shipping on orders $49 and up
The G30 lithium battery from Braille is designed for the Import Tuner market (4 and 6 cylinder) for track use and has enough power for small black V8 race cars and hot rods with light electrical demands/accessories and standard compression. The G30 comes in the popular ETX 30 Group size, just like the B3121 AGM, so it is small and light enough to mount in a variety of locations. Incorporated in this battery is the same technology used in their race winning batteries used by nearly every OEM developer in classes ranging from SCCA to Formula 1.
Show More Show Less
Endurance Series AGM Battery - B48-H6-L3
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Braille - Corporate Logo
T#:36947237
Part#: B48-H6-L3
Ships in 3 Business Days
$ 398.99 USD
$ 398.99 USD

Schwaben Automatic Battery Tender
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Schwaben - Corporate Logo
T#:378277
Part#: 005979SCH01A
In Stock
Sale - Save 30% $ 100.99

This product was last offered at the strikethrough price on
05-02-2026

$ 70.69 USD
Free Shipping on orders $49 and up
Sale - Save 30%
$ 100.99

This product was last offered at the strikethrough price on
05-02-2026

$ 70.69 USD
Free Shipping on orders $49 and up
This Schwaben Battery Charger is designed to work on 6 or 12 volt Lead-acid batteries only, includes WET, MF,AGM and GEL types. Do not use on dry cell batteries commonly used in appliances. Charger features, Charging voltage auto select. Selectable Charging current,8 LED indicators, No risk of overcharging, overheating protection, Short circuit protection.
Show More Show Less
Genuine BMW Mounting Screw - 61217577620
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:141382
Part#: 61217577620
In Stock
10% off MSRP $ 9.69

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 8.69 USD
Free Shipping on orders $49 and up
10% off MSRP
$ 9.69

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 8.69 USD
Free Shipping on orders $49 and up


Genuine BMW Mounting Screw - 190Mm
This item fits the following BMW Chassis:
E39 M5,E60 M5,E63 M6,E46 M3,E70 X5M,E71 X6M,E85 Z4M,E30,E38,E39,E46,E53 X5,E63,E70 X5,E71 X6,E82,E85 Z4,E86 Z4,E90,E92

Show More Show Less

Genuine BMW Battery Hold Down - Multiple BMWs
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:186551
Part#: 61217631587
In Stock
$ 25.88 USD
Free Shipping on orders $49 and up
$ 25.88 USD
Free Shipping on orders $49 and up
The hold down bracket secures the battery in the battery tray to keep it from sliding around.

Genuine BMW Battery Cable - Negative
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:22009
Part#: 61128373946
In Stock
$ 58.99 USD
Free Shipping on orders $49 and up


Genuine BMW Battery Cable Negative
This item fits the following BMW Chassis:
E46 M3,E46,E85 Z4,E86 Z4

Negative Battery Cable T Bolt
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:377975
Part#: 61128373946T
In Stock
$ 9.77 USD
Free Shipping on orders $49 and up
Replace the T bolt for securing the battery cable without replacing the whole cable
Liqui-Moly Battery Clamp Grease - 50 grams
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Liqui-Moly - Corporate Logo
T#:1195997
Part#: 20244
In Stock
$ 7.79

This product was last offered at the strikethrough price on
02-24-2026

$ 6.69 USD
Free Shipping on orders $49 and up
$ 6.69 USD
Free Shipping on orders $49 and up
Excellent corrosion protection for your battery and other connections


Covering Base B+ - E46, E83, Z4
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:141100
Part#: 61138387547
In Stock
$ 10.99 USD
Free Shipping on orders $49 and up


Genuine BMW Covering Base B+
This item fits the following BMW Chassis:
E46 M3,E85 Z4M,E46,E83 X3,E85 Z4,E86 Z4

Battery Tender Plus Advanced Battery Charging System
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Battery Tender - Corporate Logo
T#:49892371
Part#: BTT0210128
In Stock at Vendor
New Item
$ 69.99 USD
Free Shipping on orders $49 and up
Base B+ - 2X - E46, Z4
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:141099
Part#: 61138387546
Ships in 1 day
5% off MSRP $ 61.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 58.99 USD
Free Shipping
5% off MSRP
$ 61.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 58.99 USD
Free Shipping


Genuine BMW Base B+ - 2X
This item fits the following BMW Chassis:
E46 M3,E85 Z4M,E46,E85 Z4,E86 Z4


Cable Alternator-Starter - E46, E53, E60, E83, Z3, Z4
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:39282
Part#: 12421439743
Ships in 2 Business Days
5% off MSRP $ 120.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 114.99 USD
Free Shipping on orders $49 and up
5% off MSRP
$ 120.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 114.99 USD
Free Shipping on orders $49 and up


Genuine BMW Cable Alternator-Starter -
This item fits the following BMW Chassis:
E46,E53 X5,E83 X3,E85

Fits BMW Engines including:
M54,M56


Cover - E60, E61, Z4
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:10484
Part#: 61136931519
Ships in 2 Business Days
9% off MSRP $ 10.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 9.99 USD
Free Shipping on orders $49 and up
9% off MSRP
$ 10.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 9.99 USD
Free Shipping on orders $49 and up


Genuine BMW Cover
This item fits the following BMW Chassis:
E60 M5,E85 Z4M,E85 Z4,E86 Z4

OMP Battery Cut Off Switch / Kill Switch
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
OMP - Corporate Logo
T#:1614
Part#: EA-462
Back Ordered
$ 65.00 USD
Free Shipping
$ 65.00 USD
Free Shipping
OMP Battery Cut Off Switch / Kill Switch, for use in racecars as an emergency "kill switch", to depower the electrical system in the event of a crash or other emergency. This cut off switch is FIA approved, has 6 poles and alternator protection, as well as a removable key.
Show More Show Less