Description
🔋 BMW AGM AUX18 | 61217623376 20AH 300EN AUXILIARY BATTERY
Product Information
| Specification | Details |
|---|---|
| Brand | BMW |
| Series | AGM |
| Short Code | AUX18 |
| Model Code | AUX18 |
| Part Number | 61 21 7 623 376 |
| Voltage | 12V |
| Capacity | 20Ah |
| Cold Cranking Amps (CCA) | 300EN |
| Battery Type | AGM (Absorbent Glass Mat) |
| Box Size | 205 × 86 × 162mm |
| Length | 205mm |
| Width | 86mm |
| Height | 162mm |
| Country Of Origin | Germany |
Product Description
The BMW AGM AUX18 | 61217623376 is a genuine 12V 20Ah 300EN AGM Auxiliary Battery engineered for auxiliary and backup battery applications in selected BMW passenger vehicles. It is designed to provide dependable backup power, stable electrical support and reliable operation of the vehicle’s Start-Stop and intelligent energy management systems.
Built with Genuine BMW AGM Auxiliary Battery Technology and advanced VRLA AGM Battery Design, this maintenance-free battery delivers stable backup power for vehicle electronics, supports dual battery vehicle systems, comfort functions during engine start and Start-Stop operation. Its spill-proof, leak-resistant construction with low gas emission design provides outstanding durability and dependable electrical performance in Malaysian weather conditions. As Rolls-Royce is part of the BMW Group, selected Rolls-Royce models may also share the same genuine BMW auxiliary battery specification.
The BMW AGM AUX18 | 61217623376 is commonly used in selected BMW i3 models requiring a 20Ah 300EN AGM auxiliary battery.
It is an ideal replacement auxiliary battery for BMW vehicles requiring dependable backup power, maintenance-free convenience and extended battery service life.
Features & Benefits
✅ Genuine BMW AGM Auxiliary Battery Technology
✅ Advanced VRLA AGM Battery Design
✅ Designed For Auxiliary & Backup Battery Applications
✅ Supports Dual Battery Vehicle Systems
✅ Stable Backup Power For Vehicle Electronics
✅ Supports Comfort Functions During Engine Start
✅ Supports Start-Stop System Functions
✅ Spill-Proof & Leak-Resistant Battery Construction
✅ Low Gas Emission Design
✅ Suitable For Malaysian Weather Conditions
Suitable Vehicle Models
BMW: i3
⚠️ Vehicle compatibility may vary depending on manufacturing year, battery configuration, Start-Stop system and factory equipment.
⚠️ Please verify battery size, AGM specification, part number and vehicle application before purchase.
Important Notice
Vehicle battery size may vary depending on vehicle year, engine configuration and manufacturer specifications.
This auxiliary battery is designed specifically for selected BMW models equipped with a factory AGM auxiliary battery system.
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
✔ Vehicle VIN
✔ Current Battery Photo
✔ Current Battery Part Number
Our team will verify compatibility before purchase.
Signs Your Battery May Need Replacement
⚠️ Auxiliary Battery Warning Message
⚠️ Start-Stop System Not Operating
⚠️ Increased Battery Discharge Warning
⚠️ Vehicle Electronics Warning Message
⚠️ Comfort Functions Not Operating Correctly
⚠️ Battery Unable To Hold Charge
What’s Included
✅ Genuine BMW AGM Auxiliary Battery
✅ Professional Installation (Selected Areas)
✅ Battery Health Check
✅ Charging System Check
✅ Old Battery Trade-In Available
✅ Warranty Registration
Warranty Coverage
✅ Genuine BMW Product
✅ Manufacturer Warranty Included
✅ Warranty Registration Available
Please contact us for warranty terms and conditions.
On-Site Battery Replacement Service
Marcus Autoparts provides professional auxiliary 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
⭐ On-Site Support Available
⭐ Fast Response Service
⭐ Professional Installation
Frequently Asked Questions
Is this auxiliary battery suitable for my vehicle?
Please provide your vehicle model, manufacturing year, VIN number and current battery photo. Our team will verify compatibility before purchase.
Is this the main starter battery?
No. This is an AGM auxiliary battery designed to support the vehicle’s backup electrical system, Start-Stop functions and electronic control modules.
Do you provide installation?
Yes. Professional 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 and manufacturing year for battery recommendation.
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