The Amptron® 12V 50Ah LiFePO4 battery is the compact, lightweight entry point into lithium power for Australians who need a reliable deep-cycle battery in the smallest possible package. At just 7kg and 196 x 166 x 175mm, it fits where no standard lithium battery can — under mobility scooter seats, inside security enclosures, behind canopy drawers, inside small marine battery boxes, and in tight off-grid solar setups where space and weight are the primary constraints. The 70A continuous and 140A peak discharge handles compressor fridges, trolling motors, lighting systems, bilge pumps, and moderate inverter loads with ease. The built-in BMS manages cell balancing, thermal protection, and over-current protection automatically, so once it's installed there's nothing to monitor or maintain. Rated for 2,000+ cycles at 100% DoD and up to 5,000 cycles at 80% DoD, backed by Amptron's 4-year Australian warranty. The smallest battery in the Amptron range — and the right tool for the job when size matters most.

These batteries are designed using only the highest quality components and are backed with our 4-year warranty. This includes the use of a robust Battery Management System (BMS), Aluminium encased prismatic cells, solid busbar connectors and internal protection to reduce movement and damaging vibrations. Our batteries can also be placed on their sides providing versatile installation options.

The integrated Battery Management System is designed to monitor, protect, and optimise each cell within the battery. The BMS maximises the performance of the battery by automatically balancing the cells and protecting them from over charging, over discharging, over temperature, and excessive charge or discharge currents. Our integrated BMS allows our batteries to be used as an alternative replacement for most applications requiring deep cycle batteries, however if the charging system does not support a Lithium charge profile, there are some compromises – please contact Amptron for more information.

Features

Heavy Duty – Built In BMS (Battery Management System)

AMPTRON® Lithium batteries use a built-in Battery Management System (BMS) designed to automatically disconnect the charging or discharging circuits to prevent damage to the cells and internal electronics from abnormal operation and helps to ensure safe and accurate operation of the battery.

THE BMS PROTECTION FEATURES INCLUDE:

• Low Voltage Protection Switch – Automatically disconnects the discharge circuit to prevent damage to the cells if the battery drains below a pre-set voltage.
• Over Voltage Protection Switch – Automatically disconnects the charging circuit to prevent damage to the cells if the battery is being charged above a pre-set maximum voltage.
• Short Circuit and Over Current Protection Switch – Automatically disconnects the discharge circuit if the load draws currents above pre-set limits.
• Reverse Polarity Protection Switch – Automatically disconnects the charge and discharge circuits if a reverse polarity condition is detected.
• Thermal protection – Built-in thermal sensors will automatically disconnect the charge and discharge circuits when excessive temperatures are detected.

CELL BALANCING

The BMS balances the cells through top-end balancing and will discharge cells that exceed 3.65V during charging.

INTERNAL CELL SAFETY

THERMAL FUSE: Our latest prismatic cell technology is manufactured with an internal thermal safety fuse between the anode and cathode that will break and disconnect in the unlikely event the cell would begin to overheat.

SAFETY VENT: Each cell has a high-pressure safety vent that will flip open to release energy and prevent explosion.

FLAME RETARDANT ELECTROLYTE: Our cells are manufactured with a flame retardant additive in our electrolyte.

Use cases

The Amptron® 12V 50Ah is purpose-built for applications where physical size and weight are the primary constraints and 50Ah of reliable, maintenance-free lithium power is exactly what the job requires. Its 7kg body and IP65 sealing open it up to a unique set of installations that larger batteries simply can't fit.

1. Mobility Scooters & Powered Wheelchairs The 12V 50Ah is one of Amptron's most popular batteries for powered mobility device upgrades, where the battery's compact dimensions and dramatically reduced weight directly improve the user's daily experience.

• Like-for-Like Tray Replacement: The 196 x 166 x 175mm footprint matches common SLA and AGM battery dimensions used in popular Australian mobility scooter platforms, making this a direct swap in most cases with no tray modification required.
• Lighter Device, More Freedom: Removing 8 to 12kg of SLA battery weight from a mobility scooter meaningfully improves portability — loading into vehicles, lifting into storage, and manoeuvring through tight spaces all become easier for both the user and their carer.
• Consistent Speed and Torque: LiFePO4's flat discharge curve keeps the motor controller voltage in range right through to low battery, unlike AGM batteries that progressively lose speed and hill-climbing ability in the final 30% of discharge.
• Versatile Side Mounting: The sealed ABS enclosure supports upright or side-mounted installation, giving mobility device engineers flexibility to fit the battery to existing cavities designed for differently oriented SLA modules.

2. Marine Electronics & Small Vessel Auxiliary For small tinnies, kayaks, and compact fishing boats where a dedicated electronics battery needs to be small, light, and sealed.

• All-Day Sonar and GPS Power: 640Wh comfortably runs a fish finder, chart plotter, VHF radio, and LED nav lights for a full day on the water without needing to run the outboard for a recharge.
• IP65 for Bilge and Splash Exposure: Fully sealed against dust and water jets, making it safe in open-cockpit aluminium boats where spray, rain, and bilge splash are part of every trip.
• 140A Peak for Electric Anchor Motors: The 140A peak handles the startup current spike of small electric anchor winches and 12V trolling motors used on compact fishing platforms without triggering BMS cutout at a critical moment.
• Fits Any Small Battery Box: At 196 x 166 x 175mm, it drops into the compact battery boxes and compartments of small tinnies and kayak fishing setups where a larger lithium battery physically won't fit.

3. Security, Surveillance & Access Control Systems The 12V 50Ah is listed under Amptron's Security and Surveillance category for good reason — its compact footprint, IP65 sealing, and stable BMS-protected output make it ideal for 12V DC backup power in access control, CCTV, and alarm systems.

• Fits Standard Security Enclosures: The compact 196 x 166 x 175mm body fits inside most IP65-rated outdoor electrical enclosures used for CCTV power supplies, access control panels, and alarm system backup batteries without requiring a larger housing.
• Long Standby Retention: Retains 80% or more of rated capacity for up to 12 months in storage — essential for standby backup batteries that may sit at float charge for extended periods before being called on during a grid outage.
• BMS Over-Discharge Protection: Automatically disconnects before the battery reaches damaging voltage levels, protecting the connected security electronics from the voltage collapse that AGM batteries experience when deeply discharged under sustained load.
• Side-Mount Flexibility: Can be mounted on its side inside shallow enclosures or confined wall-mount boxes where standard upright battery orientation isn't possible.

4. Off-Grid Solar for Compact Setups For small off-grid setups, remote sensor nodes, weather stations, and compact cabin systems where a full-size 100Ah battery is overkill and a lightweight, sealed 50Ah unit is the right fit.

• Small MPPT Solar Pairing: Compatible with any 12V LiFePO4-capable MPPT solar controller at up to 50A charge current. A modest 100 to 150W solar panel with a 10A to 20A MPPT controller will fully recharge the battery in a standard Australian sunny day, keeping the system topped up indefinitely without grid connection.
• 2,000+ Cycles for Remote Sites: Long cycle life minimises battery replacement logistics at remote and hard-to-access installations — a significant advantage for environmental monitoring nodes, weather stations, and rural infrastructure that can't be serviced frequently.
• Side or Upright Installation: Mounts in any orientation inside compact off-grid enclosures, allowing maximum flexibility in system design where space is the primary engineering constraint.
• Minimal Weight for Portable Systems: At 7kg, this battery is light enough to be incorporated into portable or semi-portable off-grid kits that are transported between locations, unlike heavier 100Ah alternatives.

5. Camper Trailers, Camping & Light Auxiliary Use For weekend campers, camper trailer owners, and caravan owners adding a small second battery for basic auxiliary loads without the cost or complexity of a full auxiliary system.

• Runs the Basics: 640Wh comfortably handles LED lighting, USB device charging, a small 12V compressor fridge (20 to 30L), and a 12V water pump for a weekend away without solar — sufficient for most casual camping setups.
• Easy to Handle: At 7kg, this battery can be carried, repositioned, and installed by a single person without equipment — a significant practical advantage over heavier 100Ah batteries during setup or in confined canopy spaces.
• Zero Maintenance: No water top-ups, no terminal cleaning, no equalisation charging. Set it up, connect a solar panel, and forget about it between trips.
• Solar Top-Up Ready: Accepts up to 50A charge current from a solar MPPT controller — a 100W panel with a quality 10A MPPT is enough to maintain the 50Ah battery through normal daily use at a campsite.

Industrial, Mining & Custom Application Enquiries

The Amptron® 12V 50Ah LiFePO4 is actively used across a range of specialised industrial and mining-adjacent applications throughout Australia, including remote environmental sensor nodes, portable 12V DC field instrumentation, underground communication equipment power supplies, and compact backup power for remote monitoring and telemetry systems where the battery's small footprint, IP65 sealing, and side-mount flexibility are key selection criteria. It is also Amptron's most commonly specified battery for OEM integration into mobility, medical, and security device manufacturing where a compact, certified, long-cycle 12V lithium cell is required. For custom OEM configurations, volume procurement, multi-battery series or parallel bank design support, or compliance documentation for regulated industrial applications, contact the CPP team at sales@cppower.com.au or call 1300 543 376.

Specifications

Downloads

Battery Warranty Policy

Specification Sheet