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What this video covers

Jan Attenstedt and Nigel Calder evaluate the feasibility of upgrading a 2003 Hallberg-Rassy 43 from a 12-volt electrical system to a 48-volt house bank.0:39 The owner plans to replace an 840-amp-hour AGM bank with a 22-kilowatt-hour lithium-ion phosphate battery system.0:25 Calder notes that a 48-volt system allows for high-output charging, such as an 8-kilowatt integral alternator, while keeping conductor sizes manageable.1:22 He suggests that a 24-volt system using high-power alternators may offer a more cost-effective alternative depending on the required charging speed and duty cycle.1:58 Converting to 48 volts requires replacing existing 12-volt hardware, including inverters and windlasses, and necessitates communication between the battery bank and charging devices.2:51 Attenstedt emphasises that such a transition involves a comprehensive review of the entire electrical system rather than simple component replacement.3:11 The project requires significant investment in new hardware and system integration.3:26

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