FAQs

One customer tested his Garmin Kraken for 17 hours over 2 trips and used only 16Ah total. Another charter customer runs a 36V 120Ah with a Kraken hard every day without faulting.

Customer William B fished 6am-2pm for 3 days in a 4.8m Stacer with a Force trolling motor before his GML 24V 80Ah needed a charge.

Yes. One angler fished 5 hours running a 36V trolling motor plus Garmin 8412, Livescope, an 18 inch screen, and all lights, using about 10Ah from 36V and 30Ah from 12V. Another customer (Terry) reports four years on 24V (electric) + 12V (start & electronics) with faultless performance and great backup service.

Customer Pete reported 27.3 hours on the water at Lake Callide with plenty of electronics running, using only 46 percent capacity.

A Tasmanian customer powered a 55lb Minn Kota for about 6 hours with a GML 12V 80Ah deep cycle, then recharged in about 35 minutes.

Many customers are still running the same GML batteries after 8+ years. One recent customer shared their 12V starter and 36V 105Ah system has been going strong for 2+ years.

Yes. One customer ran a 36V 120Ah for 35 hours in strong offshore currents on a 7m boat without charging.

One customer reported 5 full days of use before needing to recharge his GML 36V 120Ah.

A customer fished 2 days straight at Lady Musgrave and used only about 15 percent capacity, finishing with about 102Ah still left.

One customer fished 10 hours off Fraser Island and used only about 9 percent on a 36V 120Ah with a Garmin Kraken.

Only LiFePO4 prismatic cells, correctly rated for the Ah, each protected by a BMS and temperature sensor for safety, compliance, and true capacity.

Correct series counts: 12V=4S, 24V=8S, 36V=12S, 48V=16S. Each cell is individually protected by the BMS and temperature sensors.

Yes. Our batteries are officially Australian Made and tested for local conditions.

Certified Australian Made, IP67 waterproof, IEC 62619 certified, and exceed AS/NZS 3001 & 3004. True-capacity LiFePO4 prismatic cells with BMS and temperature sensors; Bluetooth or optional Wi-Fi monitoring.

Both. We stock 12V, 24V, 36V, and 48V models aligned with AS/NZS 3001 & 3004 and also build customs for utes, kayaks, boats, caravans, off-grid and emergency services (e.g., 12V 530Ah).

Yes. We freight as Dangerous Goods with safe packaging and tracking, or via our approved installer network for local supply and installation.

Yes. Our Australian-built batteries are designed to be repairable. We service, repair and rebalance locally to reduce waste.

No. Our batteries are IP67 waterproof, rugged, and exceed AS/NZS 3001 & 3004, so they can be safely installed without a separate box.

Use the GML BMS App (Apple and Google Play) via Bluetooth, or add the optional Wi-Fi module to monitor from anywhere. New in-dash gauges show SOC, voltage, current, remaining capacity and temperature with audible/visual alarms, aligned to AS/NZS 3004.2:2014.

Yes. GML batteries exceed AS/NZS 3004.2:2014, are Australian Made, IEC 62619 certified, and IP67 waterproof.

Depends on your load, but most customers report multiple days without recharging. We build to true Ah ratings with correctly sized cells.

Some brands use undersized cells. GML uses correctly rated LiFePO4 prismatic cells so you get the true capacity you paid for.

Please send returns to:
PO BOX 472, North Tamborine QLD 4272

Include a copy of your invoice or proof of purchase and details about your issue.

Since our batteries are lithium, returns must be declared as Dangerous Goods and packed with proper padding for safe shipping.

If you would like technical support before arranging the return of your battery for assessment, email info@greenmarinelithium.com with a description plus photos of the battery, installation, wiring, and charging setup.

Important: Evaluation time can vary.
– Repairs for intentional damage, misuse, or normal wear and tear proceed only after you approve a quote.
– If no issues are found, you will be charged for labor (assessment, disassembly/reassembly) and shipping fees.
– If the product is simply over-discharged and needs charging/rebalancing, a technician fee of $120 per hour plus shipping will apply.

See our Support Page for warranty details.

First check:
1) You have installed the latest updates for the GML BMS App.
2) Your device is not paired with any other Bluetooth devices during the process.

Still unable to connect?
Email info@greenmarinelithium.com with:
– Clear photos of the battery in your setup, including wiring and connections (e.g., charger).
– A screen recording showing how you are attempting to connect to the BMS app.