Description

🔋 BANNER RUNNING BULL BACKUP AUX18L | 51801 20Ah 300EN AUXILIARY AGM BATTERY

Product Information

Product Description

The Banner Running Bull BackUp AUX18L 51801 is a genuine 12V 20Ah 300EN auxiliary AGM battery manufactured in Austria. It is specifically engineered for modern Start-Stop vehicles requiring a dedicated backup battery to support electronic control systems, safety features and advanced energy management while working together with the main starter battery.

Built with advanced Banner Running Bull BackUp Technology, this maintenance-free VRLA Absorbent Glass Mat (AGM) battery delivers excellent charge acceptance, superior cycle stability and dependable backup power performance. Its sealed leak-proof construction provides reliable operation, flexible installation and long service life even under demanding driving conditions and Malaysian weather.

The Banner Running Bull BackUp AUX18L 51801 is commonly used in selected BMW models, including the BMW i3 and other BMW Start-Stop vehicles requiring a 12V AGM auxiliary battery.

It is an ideal replacement auxiliary battery for vehicles requiring dependable backup power, maintenance-free convenience, reliable electronic system support and extended battery service life.

Features & Benefits

✅ Genuine Banner Running Bull BackUp Technology

✅ Advanced VRLA AGM Auxiliary Battery Design

✅ Designed For Modern Start-Stop Vehicles

✅ Ideal Backup Battery For Electronic Control Systems

✅ Supports Vehicle Safety & Comfort Electronics

✅ Excellent Charge Acceptance

✅ Superior Cycle Stability

✅ Maintenance-Free Sealed Construction

✅ Leak-Proof AGM Battery Design

✅ Flexible Installation Position

✅ Suitable For Malaysian Weather Conditions

Suitable Vehicle Models

Passenger Vehicle Applications (Auxiliary Battery)

BMW: i3, i3s, and selected BMW Start-Stop equipped models using a dedicated AGM auxiliary battery.

⚠️ Vehicle compatibility may vary depending on manufacturing year, battery configuration and factory equipment.

⚠️ Please verify battery size, AGM specification and vehicle application before purchase.

Important Notice

Vehicle battery size may vary depending on vehicle year, engine capacity, Start-Stop system and manufacturer specifications.

Please contact Marcus Autoparts – SS2, Petaling Jaya with your vehicle model, manufacturing year and current battery photo for compatibility verification before purchase.

Not Sure If This Battery Fits Your Vehicle?

Send us:

✔ Vehicle Model

✔ Manufacturing Year

✔ Current Battery Photo

Our team will verify compatibility before purchase.

Signs Your AGM Battery May Need Replacement

⚠️ Engine Hard To Start

⚠️ Slow Cranking

⚠️ Start-Stop Warning Light Blinking

⚠️ Start-Stop System Not Functioning Properly

⚠️ Battery Unable To Hold Charge

⚠️ Frequent Jump Start Required

What’s Included

✅ Genuine Banner Running Bull AGM Battery

✅ Battery Health Check

✅ Alternator Charging System Check

✅ Professional Installation

✅ Warranty Registration

✅ Old Battery Trade-In Available

Warranty Coverage

✅ Genuine Banner Product

✅ Manufacturer Warranty Included

✅ Warranty Registration Available

Please contact us for warranty terms and conditions.

On-Site Battery Replacement Service

Marcus Autoparts provides professional on-site car battery replacement and installation services throughout Petaling Jaya, Kuala Lumpur, Subang Jaya, Shah Alam, Puchong, Cheras and surrounding Klang Valley areas.

Walk-in customers are also welcome at Marcus Autoparts – SS2, Petaling Jaya.

Why Choose Marcus Autoparts?

⭐ Experienced Battery Specialist

⭐ Genuine Products Only

⭐ Battery Testing Before Installation

⭐ Alternator Charging System Check

⭐ On-Site Support Available

⭐ Fast Response Service

⭐ Professional Installation

Frequently Asked Questions

Is this battery suitable for my vehicle?

Please provide your vehicle model, manufacturing year and current battery photo. Our team will verify compatibility before purchase.

What is an auxiliary AGM battery?

An auxiliary AGM battery supports the vehicle’s electronic systems, Start-Stop functions and safety features while working together with the main starter battery.

Can I replace this battery with a conventional battery?

No. Vehicles originally equipped with an AGM auxiliary battery should continue using an AGM battery to ensure proper operation of the electrical and energy management systems.

Do you provide installation?

Yes. Professional battery installation is available in selected Klang Valley areas.

Do you accept old battery trade-in?

Yes. Old battery trade-in is available upon replacement.

Can I walk in?

Yes. Walk-in customers are welcome at Marcus Autoparts – SS2, Petaling Jaya.

Do you provide battery delivery?

Yes. We provide battery delivery and installation services throughout Klang Valley.

Contact Us

📱 WhatsApp / Call: 016-3224319 (Marcus)

📍 Marcus Autoparts – SS2, Petaling Jaya

🚚 Send us your vehicle model, manufacturing year and current battery photo for battery recommendation.

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