Want to upgrade your Nissan Leaf battery at home to save on installation costs and take control of your EV’s performance? While professional installation is recommended for safety, experienced DIYers can successfully complete a Nissan Leaf battery upgrade at home with the right tools, knowledge, and precautions. Many Leaf owners are deterred by dealership fees (often $800-$1,500 for installation) but worry about high-voltage risks or improper fitment. As CNS BATTERY’s EV experts, we’ve crafted a step-by-step guide to home battery upgrades, covering safety protocols, compatibility checks, and pro tips to ensure your project is safe, seamless, and effective.