Dell Latitude 3550 How to Upgrade Ram-Harddrive-Battery Easy & Quick DIY Battery Replacement Techstore Online Laptop, Desktop & Accessories Store www.techstore.co.in - we showcase the easiest was to upgrade the dell latitude 3550. After watching this video you will be able to upgrade the ram,harddrive and also replace the battery of this laptop. The process is not as straightforward as it seems. watch the full video for complete info. Watch the Below video for complete information.