Mercedes W211 Gets a Power Boost: Installing a New S-Class 105Ah Battery!

Mercedes W211 Gets a Power Boost: Installing a New S-Class 105Ah Battery!

   • Mercedes W211 Gets a Power Boost: Installi...  

“DIY Battery Upgrade for Mercedes W211 – How I Installed a 105Ah S‑Class Battery!
In this step-by-step tutorial, I show how I replaced the stock battery in my Mercedes W211 (E‑Class) with a high-capacity 105 Ah battery from a newer S‑Class. This is a clear guide for anyone looking to upgrade their battery for better performance and reliability.

✅ What you’ll learn: how to safely disconnect and remove the old battery, tools needed, how to install the S‑Class 105Ah unit, what to check afterwards (coding, warning lights, system reset), and why this upgrade matters.

🛠️ This instruction applies to the following Mercedes models and variations with the battery located in the trunk:
E-Class W211: E 200 Kompressor, E 200 NGT, E 220 CDI, E 270 CDI, E 280 (petrol), E 280 CDI, E 320, E 320 CDI, E 350, E 500, E 55 AMG, E 63 AMG
CLS-Class W219: CLS 350, CLS 500, CLS 550, CLS 63 AMG

🔍 Before installing, always check your original battery’s size, terminal layout, and whether your vehicle uses start/stop or AGM technology.

If you want to improve your car’s electrical stability, avoid weak starts, and prolong battery life — this video is for you!

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