Australian battery buying guides

Boat Battery Comparisons: Model vs Model

Compare the exact batteries you are considering. Check capacity, current limits, physical fit and Australian price evidence before choosing a house bank or an engine starting battery.

Sources checked 2 October 2026 · 18 comparisons · Manufacturer specifications, not independent bench tests

100Ah and 120Ah lithium battery comparisons

Compare compact house-bank options by current limits, physical fit, monitoring and price basis.

Illustrated Invicta Black 100Ah versus Invicta Xero 100Ah: 100Ah at 12.8V versus 100Ah at 12.8V. Published specifications; schematic, not to scale.Exact models · Source-linked

Invicta Black 100Ah vs Xero 100Ah: Battery Comparison

Invicta Black vs Xero 100Ah: compare discharge limits, IP65 vs IP67, communication, weight and Australian RRP using exact-model manufacturer sources.

Compare specifications →Illustrated Invicta Black 100Ah versus Enerdrive B-TEC Ultra 100Ah: 100Ah at 12.8V versus 100Ah. Published specifications; schematic, not to scale.Exact models · Source-linked

Invicta Black 100Ah vs Enerdrive B-TEC Ultra 100Ah

Compare Invicta Black SNLB12V100BT and Enerdrive Ultra EPL-100BT-12V-G3: current limits, case shape, weight, monitoring and Australian price evidence.

Compare specifications →Illustrated Invicta Black 100Ah versus iTechworld iTECH120X PRO: 100Ah at 12.8V versus 120Ah at 12.8V. Published specifications; schematic, not to scale.Exact models · Source-linked

Invicta Black 100Ah vs iTECH120X PRO 120Ah

Compare Invicta Black 100Ah and iTECH120X PRO 120Ah for boat house banks: capacity, discharge limits, size, source discrepancies and price basis.

Compare specifications →Illustrated Enerdrive B-TEC Ultra 120Ah versus iTechworld iTECH120X PRO: 120Ah versus 120Ah at 12.8V. Published specifications; schematic, not to scale.Exact models · Source-linked

Enerdrive B-TEC Ultra 120Ah vs iTECH120X PRO

Two 120Ah lithium batteries compared: Enerdrive B-TEC Ultra G3 and iTECH120X PRO. See current limits, case dimensions, dated prices and evidence limits.

Compare specifications →Illustrated Enerdrive B-TEC Ultra 100Ah versus Invicta Xero 100Ah: 100Ah versus 100Ah at 12.8V. Published specifications; schematic, not to scale.Exact models · Source-linked

Enerdrive B-TEC Ultra 100Ah vs Invicta Xero 100Ah

Compare Enerdrive B-TEC Ultra and Invicta Xero 100Ah batteries for Australian boats: exact models, dimensions, current limits, dated prices and source documents.

Compare specifications →Illustrated Enerdrive B-TEC Ultra 100Ah versus iTechworld iTECH120X PRO: 100Ah versus 120Ah at 12.8V. Published specifications; schematic, not to scale.Exact models · Source-linked

Enerdrive B-TEC Ultra 100Ah vs iTECH120X PRO

Enerdrive B-TEC Ultra 100Ah vs iTECH120X PRO 120Ah: compare capacity, installation fit, published current limits and Australian prices with linked sources.

Compare specifications →Illustrated Invicta Xero 100Ah versus iTechworld iTECH120X PRO: 100Ah at 12.8V versus 120Ah at 12.8V. Published specifications; schematic, not to scale.Exact models · Source-linked

Invicta Xero 100Ah vs iTECH120X PRO 120Ah

Compare Invicta Xero SNLX12V100BT with iTECH120X PRO: capacity, dimensions, monitoring, source limitations and Australian RRP versus selling price.

Compare specifications →

200Ah and 300Ah lithium house battery comparisons

Compare larger single-case batteries for house loads, with particular attention to charging, access and integration.

Illustrated Enerdrive B-TEC Ultra 300Ah versus Invicta Xero 300Ah: 300Ah versus 300Ah at 12.8V. Published specifications; schematic, not to scale.Exact models · Source-linked

Enerdrive B-TEC Ultra 300Ah vs Invicta Xero 300Ah

Compare Enerdrive Ultra and Invicta Xero 300Ah house batteries: current limits, case dimensions, weight, communications and Australian price sources.

Compare specifications →Illustrated Enerdrive B-TEC Ultra 200Ah versus Invicta Xero 200Ah: 200Ah versus 200Ah at 12.8V. Published specifications; schematic, not to scale.Exact models · Source-linked

Enerdrive B-TEC Ultra 200Ah vs Invicta Xero 200Ah

Compare exact Enerdrive Ultra and Invicta Xero 200Ah models: dimensions, 200A ratings, charging limits, communication and Australian price sources.

Compare specifications →Illustrated Invicta Black 200Ah versus Invicta Xero 200Ah: 200Ah at 12.8V versus 200Ah at 12.8V. Published specifications; schematic, not to scale.Exact models · Source-linked

Invicta Black 200Ah vs Xero 200Ah: Which Fits Your Boat?

Compare Invicta Black and Xero 200Ah: same capacity and discharge rating, different charge limits, IP ratings, communication, weight and Australian RRP.

Compare specifications →Illustrated Invicta Black 200Ah versus Enerdrive B-TEC Ultra 200Ah: 200Ah at 12.8V versus 200Ah. Published specifications; schematic, not to scale.Exact models · Source-linked

Invicta Black 200Ah vs Enerdrive B-TEC Ultra 200Ah

Invicta Black 200Ah vs Enerdrive Ultra 200Ah: compare case fit, charging limits, IP ratings, monitoring and Australian price evidence for boat house banks.

Compare specifications →

100Ah vs 200Ah: boat battery capacity upgrades

Check whether more storage solves your energy requirement and what changes in case size, current limits and charging.

Illustrated Enerdrive B-TEC Ultra 100Ah versus Enerdrive B-TEC Ultra 200Ah: 100Ah versus 200Ah. Published specifications; schematic, not to scale.Exact models · Source-linked

Enerdrive B-TEC Ultra 100Ah vs 200Ah: Boat Bank Size

Choose between one Enerdrive Ultra 100Ah and one 200Ah battery: compare capacity, current limits, physical fit, weight and the cost of a boat-bank upgrade.

Compare specifications →Illustrated Invicta Xero 100Ah versus Invicta Xero 200Ah: 100Ah at 12.8V versus 200Ah at 12.8V. Published specifications; schematic, not to scale.Exact models · Source-linked

Invicta Xero 100Ah vs 200Ah: Boat Battery Upgrade

Invicta Xero 100Ah or 200Ah for your boat? Compare energy capacity, current limits, weight, terminal clearance, charging implications and Australian RRP.

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Marine starting and AGM battery comparisons

Compare starting ratings, reserve capacity and fitment. Use your engine manual to establish the required battery type and ratings.

Illustrated Century Marine Pro 780 versus Century Marine Pro 1000: 100Ah at the 20-hour rate versus 100Ah at the 20-hour rate. Published specifications; schematic, not to scale.Exact models · Source-linked

Century Marine Pro 780 vs 1000: Starting and Reserve

Century Marine Pro 780 vs 1000: compare starting ratings, equal 100Ah capacity, reserve minutes, physical fit and model numbers for Australian boats.

Compare specifications →Illustrated Century Marine Pro 780 versus Century Dual Force+ 31X MF: 100Ah at the 20-hour rate versus 100Ah at the 20-hour rate. Published specifications; schematic, not to scale.Exact models · Source-linked

Century Marine Pro 780 vs Dual Force+ 31X MF

Compare Century Marine Pro 780 with Dual Force+ 31X MF AGM: starting figures, reserve capacity, dimensions, weight and application-dependent warranty.

Compare specifications →Illustrated Optima BlueTop D31M versus Century Marine Pro 1000: 75Ah versus 100Ah at the 20-hour rate. Published specifications; schematic, not to scale.Exact models · Source-linked

Optima BlueTop D31M vs Century Marine Pro 1000

Optima D31M vs Century Marine Pro 1000 for Australian boats: compare CCA, MCA, Ah, reserve ratings, dimensions, mass and local warranty evidence.

Compare specifications →Illustrated Optima BlueTop D31M versus Century Dual Force+ 31X MF: 75Ah versus 100Ah at the 20-hour rate. Published specifications; schematic, not to scale.Exact models · Source-linked

Optima D31M vs Century Dual Force+ 31X MF AGM

Compare Optima BlueTop D31M and Century Dual Force+ 31X MF AGM batteries: capacity, starting ratings, physical fit, weight and Australian warranty sources.

Compare specifications →Illustrated Century Marine Pro 680 versus Century Marine Pro 780: 75Ah at the 20-hour rate versus 100Ah at the 20-hour rate. Published specifications; schematic, not to scale.Exact models · Source-linked

Century Marine Pro 680 vs 780: Boat Battery Comparison

Century Marine Pro 680 vs 780: compare CCA, MCA, reserve capacity, dimensions and weight using the Australian manufacturer brochure. Check fit before upgrading.

Compare specifications →

How to use these battery comparisons

Match the job first

Starting an outboard and powering a fridge overnight require different evidence. Choose the appropriate category before comparing price or capacity.

Match the model code

A brand can sell several batteries with the same Ah rating. Check the model code on your quote against the sources, including the generation and case format.

Compare complete quotes

A sale price, an RRP and an installed total are different figures. Prices here carry a date and a basis; an unavailable price remains unknown.

Our conclusions explain trade-offs in the published data. We have not independently measured these batteries, ranked their reliability or tested their apps. Source conflicts and missing specifications remain visible. These pages are a selected comparison library, not a complete market catalogue.

Calculate house battery capacityMeasure your battery compartment

Turn the estimate intoan installation plan.

Take the load estimate, charging sources and cable runs to a qualified marine electrician. Our installation guide helps you ask about isolation, over-current protection, ventilation and compliance before work begins.

Read the installation guideCheck the bank size