By Boat Battery editorial team · 2 minute read · Editorial policy
Lithium is not prohibited as a chemistry on Australian recreational boats, but installation, licensing and documentation requirements depend on the vessel, jurisdiction, voltage and work performed.
Chemistry versus installation requirements
The battery chemistry is only one part of the compliance question. AS/NZS 3004.2 covers boat electrical installations, while state and territory laws, commercial-vessel rules and insurer or marina conditions can add different duties.
Electrical work and licensing
Extra-low-voltage DC work and mains-voltage work are not regulated identically. Do not assume that owner work is permitted—or prohibited—without checking the law where the vessel is registered and operated. Use a licensed electrician where the applicable electrical law requires one and a suitably competent marine professional for system design and assessment.
Commercial and survey vessel duties
Commercial and survey vessels are a separate regime with additional requirements, and hire-and-drive houseboats in particular carry operator and state-authority conditions. If the boat earns money, ask the authority before you buy the batteries.
Battery transport and delivery requirements
Transport is the one place where rules bite directly on the battery rather than the installation: lithium batteries are dangerous goods for freight purposes, which is why they ship by road within Australia rather than by air, and why remote delivery takes longer than you expect.
Related installation planning resources
Use these notes to prepare your own measurements and questions. Check the exact equipment manuals and have the proposed system assessed for your vessel before buying or changing electrical components.
Calculate your boat battery capacity
The house bank calculator takes your loads, your nights on the hook, your solar and your alternator, and returns the bank, the DC-DC charger, the AGM equivalent and the weight you take off the boat.
Open the calculator