🎯 Key Takeaways for quick navigation: 00:51 🔄 Updating Raymarine firmware includes installing Victron app, and simplifying integration. 01:59 🔋 Switching from lead-acid to lithium batteries for increased power and reliability. 03:58 ⚡ Six significant electrical areas were upgraded in the boat, including battery installation and chart/navigation area. 04:42 🌡️ Solving the challenge of heating lithium batteries in low temperatures. 07:29 🚤 Upgrades include alternator regulation, solar charging, and advanced battery monitoring for efficient power management.