Features: The rectifier controls and changes the AC voltage generated by the alternator used in the electrical system to 12v DC voltage within a certain tolerance to ensure the battery receives is charge and also ensure the bulbs do not burn out..
Features: OptiMate TEST – Cranking & Alternator: 12V tester for battery state of charge, cranking performance and vehicle charging system.. The ultimate pocket tester for on-vehicle battery performance & alternator voltage testing with either 12V lead-acid...