Is your Nissan Leaf suffering from drastic range loss, slow charging, or frequent battery warnings—and you’re unsure how to tackle a replacement without risking damage or safety hazards? Nissan Leaf battery replacement is a critical task for aging EVs, but many owners are intimidated by high-voltage systems, compatibility concerns, or unclear installation steps. Generic guides often skip Leaf-specific details, leading to costly mistakes like BMS misalignment or wiring errors. As CNS BATTERY experts, we’ve crafted a foolproof step-by-step guide tailored to all Leaf generations (2011-2026), covering safety prep, tools, installation, and post-replacement checks. This guide empowers you to complete a reliable replacement—whether you’re a DIY enthusiast or seeking clarity before hiring a technician.