FreezeBrain Alternator Booster Diode – Toyota LandCruiser 70 Series Charging Upgrade (1VD-FTV 4.5L V8 only)

Improve your Toyota’s charging performance with the Freezebrain Alternator Booster Diode.

Designed as a simple plug-in upgrade, this diode increases alternator output voltage by approximately 0.5 volts to help maintain healthier charging for both cranking and auxiliary batteries.

Ideal for vehicles running fridges, lighting, winches, compressors, and other high electrical loads.

Key Features

Increases alternator charge voltage by approximately 0.5V
Helps improve charging performance for auxiliary batteries
Simple installation by replacing the factory ALT-S fuse
Ideal for touring, towing, and accessory-equipped 4WDs
Works well alongside the Freezebrain AC Amplifier idle-up feature
Includes installation instructions

Key Benefits

Modern vehicles with heavy accessory loads can struggle to maintain sufficient charging voltage, especially at idle.

Our FreezeBrain Alternator Booster Diode helps improve battery charging performance and reduce low-voltage issues caused by fridges, lights, compressors, and dual battery systems.

Vehicle Compatibility