Are you hunting for the best DIY Nissan Leaf battery upgrade videos to tackle your battery replacement safely and save on labor costs? For hands-on Leaf owners, DIY upgrades can cut expenses by $800-$1,500—but only if you follow reliable, model-specific guidance. The internet is flooded with vague, outdated, or unsafe DIY videos that skip critical steps like high-voltage safety protocols or BMS calibration, putting you at risk of injury or $5,000+ in component damage. As CNS BATTERY experts, we’ve curated the top 2026 DIY videos, broken down by Leaf generation, and shared how our batteries pair with these tutorials for seamless, successful upgrades.