Side view of the Amptron BluEdge 12V 400Ah battery showing the label with model AT-LFP-12-400-BTC-DV10, the printed specification panel and the Bluetooth and LiFePO4 markings

A blue lithium iron phosphate (LiFePO4) battery from Amptron with multiple connection terminals visible on the top surface.

Bluedge 12V 400Ah / 300A Cont. discharge LiFePO4 Lithium Battery Amptron

Name: Bluedge 12V 400Ah / 300A Cont. discharge LiFePO4 Lithium Battery Amptron
Brand: Amptron
Price: 3599.0 AUD
Availability: InStock

SKU: AT-LFP-12-400-BTC-DV10

Suitable for a wide range of 12V systems, including RVs, caravans, marine vessels, solar energy storage, and industrial applications requiring dependable deep cycle power.

1 x Amptron BluEdge 12V 400Ah LiFePO4 battery

Cable, lugs, fusing and any monitoring display are not supplied and are specified to suit the installation.

$3,599.00

Taxes included.

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Bluedge 12V 400Ah / 300A Cont. discharge LiFePO4 Lithium Battery Amptron

$3,599.00

6000 CYCLES, 100% DOD CAPABLE

Amptron recommend 80 percent for longest life, which still leaves 320Ah usable.

MOUNTS ON ITS SIDE

Prismatic cells, reinforced busbars and a rigid frame, so orientation does not cost you capacity.

300A CONTINUOUS, 600A PEAK

Enough to run a large inverter without the battery ever being the limiting factor.

AS/NZS COMPLIANT, RV AND MARINE

AS/NZS 3001.2:2022 and 3004.2:2014, which is what lets the installation be signed off.

BLUETOOTH, RS485 AND CANBUS

The BMS reports properly, so it integrates into a monitored system rather than sitting there blind.

The Amptron BluEdge 12V 400Ah is built for systems that actually draw hard rather than just store a lot. It carries 400Ah at 12.8V, which is 5120Wh, and will deliver 300A continuously with a 600A peak for three seconds. That is enough to run a large inverter without the battery being the limiting factor.

The certifications are the part worth paying attention to. It is certified to IEC62619 and UN38.3, and compliant with AS/NZS 3001.2:2022 for recreational vehicles and AS/NZS 3004.2:2014 for marine. If you are fitting a battery into a caravan or a boat in Australia, that compliance is not a nice-to-have, it is what makes the installation signable.

Inside are prismatic cells with reinforced busbars and a rigid frame, which is what allows it to be mounted on its side without losing usable capacity or shaking components loose. Amptron rate it for 100 percent depth of discharge and recommend 80 percent for longest life, which still leaves 320Ah you can use against roughly half of a comparable lead acid bank. Rated life is 6000 cycles at a 0.2C standard charge and discharge.

The integrated BMS handles protection and monitoring and talks over Bluetooth, RS485 and CANbus, so it will sit in a monitored system properly rather than being a black box. Charging is 80A standard and up to 300A maximum, so it will take everything a large charger or alternator setup can give it. Amptron support up to four in series, so two makes a 24V bank and four makes 48V, and they can be paralleled for more capacity at 12V.

Two things to plan for before it arrives. It weighs 40.5kg, so the mount and the lifting need thinking about rather than improvising. And the M8 terminals torque to 6Nm — worth using a torque wrench, because over-tightening lithium terminals is one of the more common ways these get damaged on install.

Product Code AT-LFP-12-400-BTC-DV10

Chemistry Lithium Iron Phosphate, LiFePO4, prismatic cells

Nominal Voltage 12.8V

Capacity 400Ah, 5120Wh at 0.2C

Operating Voltage Range 10V to 14.6V

Depth of Discharge 100 percent capable, 80 percent recommended

Standard Charge Current 80A

Maximum Charge Current 300A

Maximum Continuous Discharge 300A

Peak Discharge 600A for 3 seconds

Cycle Life 6000 cycles at 0.2C standard charge and discharge

Cut-Off Voltage 10V, or when the lowest cell reaches 2.5V

Series Connection Supported, up to 4 batteries

Parallel Connection Supported, though parallel communication between batteries is not

Charge Temperature 0 to 55 degrees C

Discharge Temperature Minus 20 to 60 degrees C

Storage Temperature Minus 20 to 40 degrees C

Internal Resistance 20 milliohms or less

Terminals M8, torqued to 6Nm

Communication Bluetooth, RS485 and CANbus

IP Rating IP66

Certification IEC62619 and UN38.3

Compliance AS/NZS 3001.2:2022 for recreational vehicles, AS/NZS 3004.2:2014 for marine

Q: Can I wire these in series for a 24V or 48V system?
A: Yes. Amptron support up to 4 of these in series, so two gives you a 24V bank and four gives you 48V. They can also be paralleled for more capacity at 12V. The one caveat is that parallel communication is not supported, so the BMS units will not talk to each other when paralleled and each battery reports on its own.

Q: Can this replace my AGM or gel battery directly?
A: Yes, it is designed as a replacement for most applications currently running a deep cycle gel, AGM or flooded lead acid battery. Bear in mind the charging profile differs, so the charger or DC-DC unit needs to be set for lithium, with a maximum charge voltage of 14.6V.

Q: How much usable capacity do I actually get?
A: All 400Ah, which is 5120Wh. That is the real difference against lead acid, where discharging much past half flattens the cycle life. A 400Ah lithium does the work of roughly 800Ah of lead acid.

Q: Is it suitable for running a big inverter?
A: Yes. It supplies 300A continuously with a 600A peak for 3 seconds, so it will support a large inverter without the battery being the weak point. Size the cable and fusing to match that current.

Q: Is it legal to fit in a caravan or boat?
A: It is compliant with AS/NZS 3001.2:2022 for recreational vehicles and AS/NZS 3004.2:2014 for marine, and certified to IEC62619 and UN38.3. That compliance is what allows the installation to be signed off, so it matters as much as the specification does.

Q: Can it be mounted on its side?
A: Yes. The prismatic cells, reinforced busbars and rigid frame mean it can be installed in any orientation without losing usable capacity.

Q: How do I monitor it?
A: The integrated BMS communicates over Bluetooth, RS485 and CANbus, so you can check it on your phone or integrate it into a monitored system rather than treating it as a black box.

Q: How fast can I charge it?
A: Standard charge current is 80A and the maximum is 300A, so it will accept everything a large charger or upgraded alternator can deliver. Charge between 0 and 55 degrees C, to a maximum of 14.6V.

Q: What torque do the terminals take?
A: 6Nm on the M8 terminals. Use a torque wrench, as over-tightening is a common cause of damage on installation.

Quick Specs

Capacity 400Ah, 5120Wh at 12.8V

Discharge 300A continuous, 600A peak

Cycle Life 6000 Cycles at 100 percent DoD

Charge Current 80A standard, 300A maximum

Weight 40.5kg

Rating IP66, IEC62619 and UN38.3

User Manual

Owners Manual - Amptron BluEdge 12V 400Ah LiFePO4

Warranty

Supplied with a 5-year manufacturer warranty covering defects in materials or workmanship.

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