Battery for BMW 8 Series E31 (1991-1997)

Braille Lightweight Advanced AGM Battery - B3121 - 21lbs

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T#:558042

Part#: B3121

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$ 270.99 USD

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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*

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Braille Performance GreenLite Lithium-ION Battery - G30 - 5.5lbs ...

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T#:558046

Part#: G30

Ships in 7 Business Days

$ 522.99 USD

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$ 522.99 USD

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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.

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Schwaben Automatic Battery Tender

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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

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Sale - Save 30%

$ 100.99

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

$ 70.69 USD

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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.

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Genuine BMW Mounting Screw - 61217577620

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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

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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

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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

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Genuine BMW Battery Hold Down - Multiple BMWs

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T#:186551

Part#: 61217631587

In Stock

$ 25.88 USD

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$ 25.88 USD

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The hold down bracket secures the battery in the battery tray to keep it from sliding around.

Liqui-Moly Battery Clamp Grease - 50 grams

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T#:1195997

Part#: 20244

In Stock

$ 7.79

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

$ 6.69 USD

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$ 6.69 USD

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Excellent corrosion protection for your battery and other connections

Battery Tender Plus Advanced Battery Charging System

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T#:49892371

Part#: BTT0210128

In Stock at Vendor

$ 69.99 USD

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$ 69.99 USD

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Cover - E31

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T#:40292

Part#: 12521724375

Ships in 1-2 days

3% off MSRP $ 33.99

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

$ 32.99 USD

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3% off MSRP

$ 33.99

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

$ 32.99 USD

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Genuine BMW COVER
Fits BMW Engines including:
M70,M73,S70

Genuine BMW Engine Ground Cable

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T#:31246

Part#: 11121736201

Ships in 4 Business Days

$ 25.99 USD

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$ 25.99 USD

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Genuine BMW Earth Strap
This item fits the following BMW Chassis:
E39 M5,E34,E38,E39,E53 X5 X5

Fits BMW Engines including:
M60,M62,S62

Cover

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T#:40247

Part#: 12521714254

Ships in 8 Business Days

$ 9.99 USD

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$ 9.99 USD

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Genuine BMW Cover -
This item fits the following BMW Chassis:
E34,E38,E39,F06,F10,F12,F13

Covering Base B+ - E31, E32, E34

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T#:40345

Part#: 12521736073

Ships in 6 Business Days

6% off MSRP $ 17.99

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

$ 16.99 USD

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6% off MSRP

$ 17.99

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

$ 16.99 USD

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Genuine BMW Covering Base B+ -
This item fits the following BMW Chassis:
E34

Fits BMW Engines including:
M60,M62

Battery Base B+ - E31

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T#:40287

Part#: 12521724261

Ships in 8 Business Days

5% off MSRP $ 123.99

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

$ 117.99 USD

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5% off MSRP

$ 123.99

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

$ 117.99 USD

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Genuine BMW BASE B+
Fits BMW Engines including:
M70,M73,S70

Genuine BMW Positive Battery Terminal Cover - E36, E32, E31

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T#:141329

Part#: 61211386645

Special Order: No Guaranteed ETA

4% off MSRP $ 27.99

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

$ 26.99 USD

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4% off MSRP

$ 27.99

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

$ 26.99 USD

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Genuine BMW Cover Positive Battery Terminal
This item fits the following BMW Chassis:
E36 M3,E36

OMP Battery Cut Off Switch / Kill Switch

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T#:1614

Part#: EA-462

Back Ordered

$ 65.00 USD

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$ 65.00 USD

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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.

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Battery for BMW 8 Series E31 (1991-1997)

Braille Lightweight Advanced AGM Battery - B3121 - 21lbs

Braille Performance GreenLite Lithium-ION Battery - G30 - 5.5lbs ...

Schwaben Automatic Battery Tender

Genuine BMW Mounting Screw - 61217577620

Genuine BMW Battery Hold Down - Multiple BMWs

Liqui-Moly Battery Clamp Grease - 50 grams

Battery Tender Plus Advanced Battery Charging System

Cover - E31

Genuine BMW Engine Ground Cable

Cover

Covering Base B+ - E31, E32, E34

Battery Base B+ - E31

Genuine BMW Positive Battery Terminal Cover - E36, E32, E31

OMP Battery Cut Off Switch / Kill Switch

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