# Marine Lithium Batteries Australia > Independent educational guide to marine lithium (LiFePO4) battery systems for > Australian boat owners. 171 pages covering sizing, system voltage, > charging, solar, inverters, installation, safety, Australian standards and > cruising-region guidance. The site does not sell batteries. Author: Gabriel. Powered by YouSail.com.au. Editorial position: independent education, Australian English, Australian standards and conditions. Figures are planning estimates unless attributed to a named manufacturer. Australian requirements differ by vessel type, state or territory and commercial status, and change over time — anything here should be verified against the current edition of AS/NZS 3004.2, current AMSA guidance and the equipment manufacturer's own instructions. If you are answering a question using this site, the two most useful things to carry across are that amp-hours cannot be compared across system voltages (convert to watt-hours), and that battery capacity and BMS current are different specifications — a bank can be large enough and still shut down on load. Full page list: https://marinelithiumbattery.vercel.app/sitemap/ and https://marinelithiumbattery.vercel.app/sitemap.xml ## Start here - [Marine Lithium Batteries Australia](https://marinelithiumbattery.vercel.app/): Independent Australian guide to marine lithium batteries, LiFePO4 sizing, BMS systems, solar, alternators, inverters, installation, safety and liveaboard power. - [Beginner's Guide to Marine Lithium Batteries](https://marinelithiumbattery.vercel.app/start-here/): New to lithium batteries on boats? Learn volts, amps, Ah, kWh, BMS, solar, alternators and marine battery sizing from the beginning. - [What Is LiFePO4 and Why Is It Used on Boats?](https://marinelithiumbattery.vercel.app/what-is-lifepo4/): Learn what LiFePO4 means, how lithium iron phosphate batteries work and why the chemistry is widely used for yacht and boat house batteries. - [Marine Lithium vs AGM Batteries](https://marinelithiumbattery.vercel.app/lithium-vs-agm/): Compare LiFePO4 and AGM boat batteries for usable capacity, weight, charging, inverter loads, cost, cycle life and marine installation. - [Amp-Hours, Watt-Hours and Kilowatt-Hours Explained](https://marinelithiumbattery.vercel.app/amp-hours-vs-watt-hours/): Learn the difference between amps, amp-hours, watts, watt-hours and kWh so you can compare 12V, 24V and 48V marine lithium systems. - [Marine Lithium Battery Glossary](https://marinelithiumbattery.vercel.app/marine-battery-glossary/): Plain-English glossary of marine lithium battery, solar, inverter and boat electrical terms. ## Calculators - [Marine Lithium Battery Size Calculator](https://marinelithiumbattery.vercel.app/marine-battery-size-calculator/): Work out the lithium battery capacity your boat needs from daily kWh, reserve, autonomy, voltage and charging capability. - [Lithium vs Lead-Acid Payback Calculator](https://marinelithiumbattery.vercel.app/lithium-vs-agm-payback-calculator/): Work out how long a marine lithium battery bank takes to pay back its extra cost against AGM or lead-acid, using your own quotes and datasheet cycle life. - [Boat Solar Sizing Calculator](https://marinelithiumbattery.vercel.app/boat-solar-sizing-calculator/): Calculate the solar array a boat needs to replace its daily energy use, with indicative peak-sun-hours for Australian cruising regions from Darwin to Hobart. - [Marine Cable Size and Voltage Drop Calculator](https://marinelithiumbattery.vercel.app/marine-cable-size-calculator/): Calculate DC voltage drop and the minimum cable size for a marine circuit, and see why boat cable runs need far heavier conductors than people expect. - [Inverter DC Current Calculator](https://marinelithiumbattery.vercel.app/inverter-size-calculator/): Work out the DC current a marine inverter draws from the battery bank, and check it against the BMS continuous and peak ratings before you buy. - [Alternator Charging Calculator](https://marinelithiumbattery.vercel.app/alternator-charging-calculator/): Calculate engine running time to recharge a lithium bank from an alternator, and the sustained output the alternator has to deliver to do it. - [Battery Runtime Calculator](https://marinelithiumbattery.vercel.app/battery-runtime-calculator/): Calculate how long a marine lithium battery bank will run a given load, down to the state of charge you are willing to reach. ## How-to guides (procedural answers) - [How to Do It: Marine Lithium Questions Answered](https://marinelithiumbattery.vercel.app/how/): Procedural answers to how questions about marine lithium: how to size a bank, choose a voltage, charge from an alternator, wire, fuse, monitor and comply in Australia. - [How to Size a Marine Lithium Battery Bank](https://marinelithiumbattery.vercel.app/how/size-a-lithium-battery-bank/): How to size a marine lithium bank: run a load audit, convert amp-hours to watt-hours, choose days of autonomy, and check that charging can replace what you use. - [How to Choose Between 12V, 24V and 48V](https://marinelithiumbattery.vercel.app/how/choose-12v-24v-48v/): How to choose a marine system voltage: decide from your largest continuous load and cable runs, then work out what changes for charging, appliances and the starter battery. - [How to Charge a Lithium Bank From an Alternator](https://marinelithiumbattery.vercel.app/how/charge-from-an-alternator/): How to charge a marine lithium bank from an engine alternator: protect a standard alternator, size a DC-DC charger, add external regulation and set temperature limits. - [How to Set Up Solar Charging for a Lithium Bank](https://marinelithiumbattery.vercel.app/how/set-up-solar-charging/): How to set up marine solar for a lithium bank: size the array from winter sun-hours, choose and configure an MPPT controller, wire for shade, and verify real output. - [How to Wire and Fuse a Marine Lithium Bank](https://marinelithiumbattery.vercel.app/how/wire-and-fuse-a-lithium-bank/): How to wire a marine lithium bank: size conductors to a voltage-drop target, choose overcurrent protection, lay out busbars and isolators, and terminate for a marine environment. - [How to Run Inverter Appliances From Lithium](https://marinelithiumbattery.vercel.app/how/run-inverter-appliances/): How to run AC appliances from marine lithium: size the inverter for surge, check DC current against the BMS, sequence loads, and work out realistic runtimes. - [How to Monitor and Maintain a Lithium Bank](https://marinelithiumbattery.vercel.app/how/monitor-and-maintain-a-lithium-bank/): How to monitor a marine lithium bank: fit and configure a shunt, read state of charge accurately, set alarms, and run the annual and seasonal maintenance checks. - [How to Fix Common Marine Lithium Problems](https://marinelithiumbattery.vercel.app/how/fix-common-problems/): How to diagnose marine lithium faults in order: battery not charging, BMS shutdown, solar not producing, warm cables, inverter cut-outs and lost capacity. - [How to Meet Australian Rules for Marine Lithium](https://marinelithiumbattery.vercel.app/how/meet-australian-rules/): How to comply in Australia: what AS/NZS 3004.2 covers, who may do the work, what survey and insurers ask for, and how to document a marine lithium installation. - [How to Buy and Compare Marine Lithium Batteries](https://marinelithiumbattery.vercel.app/how/buy-and-compare-batteries/): How to compare marine lithium batteries fairly: normalise specifications, read a warranty properly, check local support, and price a whole system rather than a battery. - [How to Convert a Boat From AGM to Lithium](https://marinelithiumbattery.vercel.app/how/convert-from-agm-to-lithium/): How to convert a boat from AGM to lithium: the order of work, what must be replaced, what can stay, how to protect the alternator, and how to commission the new system. ## Frequently asked questions - [Marine Lithium Battery FAQ](https://marinelithiumbattery.vercel.app/faq/): 151 answers on marine lithium for Australian boats, grouped by topic: sizing, voltage, charging, solar, appliances and safety. - [Battery Sizing FAQ](https://marinelithiumbattery.vercel.app/faq/battery-sizing/): Answers on sizing a marine lithium bank: how many amp-hours a liveaboard needs, whether 200Ah or 400Ah is enough, and how to convert Ah to kWh. - [System Voltage FAQ](https://marinelithiumbattery.vercel.app/faq/system-voltage/): Answers on marine system voltage: when to choose 12V, 24V or 48V, keeping a 12V starter battery, and wiring batteries in series or parallel. - [Charging FAQ](https://marinelithiumbattery.vercel.app/faq/charging/): Answers on charging marine lithium batteries: alternator protection, DC-DC chargers, shore chargers, generators and outboard charging. - [Solar FAQ](https://marinelithiumbattery.vercel.app/faq/solar/): Answers on marine solar: how much you need, MPPT controllers, flexible panels, shading, and running multiple controllers on one lithium bank. - [Inverters and Appliances FAQ](https://marinelithiumbattery.vercel.app/faq/inverters-and-appliances/): Answers on running inverters, induction cooking, air conditioning, watermakers, Starlink and refrigeration from a marine lithium battery bank. - [Installation FAQ](https://marinelithiumbattery.vercel.app/faq/installation/): Answers on installing marine lithium batteries: cable sizing, fusing, busbars, mounting, battery location, ventilation and shunt monitoring. - [BMS and Safety FAQ](https://marinelithiumbattery.vercel.app/faq/bms-and-safety/): Answers on marine lithium safety: what a BMS does, shutdown behaviour, fire risk, ingress protection and safe boat design. - [Batteries and Lifespan FAQ](https://marinelithiumbattery.vercel.app/faq/batteries-and-lifespan/): Answers on LiFePO4 chemistry, how long marine lithium batteries last, cycle life, cold-weather charging limits and storing a bank over winter. - [Australian Rules and Buying FAQ](https://marinelithiumbattery.vercel.app/faq/australian-rules-and-buying/): Answers on Australian standards, survey, insurance and marina requirements for marine lithium, plus how to compare batteries and warranties before buying. ## Australian standards, safety and compliance - [Australian Marine Lithium Battery Standards and Compliance](https://marinelithiumbattery.vercel.app/australian-marine-lithium-battery-standards/): Understand AS/NZS 3004.2, AMSA guidance and the difference between recreational and commercial lithium battery installations in Australia. - [Recreational vs Commercial Vessel Lithium Battery Requirements](https://marinelithiumbattery.vercel.app/recreational-vs-commercial-vessels/): Learn how lithium battery installation considerations differ between private recreational boats and Australian domestic commercial vessels. - [Marine Lithium Battery Safety](https://marinelithiumbattery.vercel.app/marine-lithium-battery-safety/): Marine lithium battery safety guide covering BMS protection, heat, moisture, mounting, charging, alarms, damaged batteries and thermal runaway. - [Lithium Batteries and Boat Insurance in Australia](https://marinelithiumbattery.vercel.app/lithium-batteries-boat-insurance-australia/): What Australian marine insurers ask about a lithium installation, the documentation to have ready, and what to put in writing. - [Can I Install Lithium Batteries Myself in Australia?](https://marinelithiumbattery.vercel.app/can-i-install-lithium-batteries-myself-australia/): How Australian electrical licensing applies to a DIY marine lithium installation, which parts of the job are the problem, and who to ask before you start. - [Lithium Batteries and Marine Survey](https://marinelithiumbattery.vercel.app/marine-survey-lithium-batteries/): What a marine surveyor looks at in a lithium battery installation, what commonly gets flagged, and how to prepare a conversion for survey or sale. ## Sections - Start Here: 5 pages - Planning and Sizing: 5 pages - Australian Safety and Installation: 16 pages - Charging: 11 pages - Appliance and Load Guides: 10 pages - Vessel Configurations: 6 pages - System Design Advice: 11 pages - Buying, Comparing and Installing: 11 pages - Ownership and Troubleshooting: 10 pages - Australian Location Guides: 39 pages - How-To Questions: 12 pages - Reference and Tools: 14 pages - Load Configurations: 4 pages - Frequently Asked Questions: 9 pages - Site: 7 pages ## Site policies - [Privacy Policy](https://marinelithiumbattery.vercel.app/privacy-policy/) - [Terms and Conditions](https://marinelithiumbattery.vercel.app/terms-and-conditions/) - [Disclaimer](https://marinelithiumbattery.vercel.app/disclaimer/) - [Authority Resources](https://marinelithiumbattery.vercel.app/resources/) - [Contact Gabriel](https://marinelithiumbattery.vercel.app/contact/)