AMPTRON 12V 50Ah / 70A Continuous Discharge LiFePO4 Battery





AMPTRON® 12V 50Ah Lithium LiFePO4 Batteries are an alternative replacement (AR) for most applications currently using a deep cycle Gel, AGM or Flooded Lead Acid battery. The maximum continuous discharge current is 70A and peak discharge current 140A for 5 seconds.

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.

Please click and read Battery warranty policy

12V 50Ah Lithium LiFePO4 battery
Lithium Iron Phosphate (LiFePO4)
Battery dimensions
L-196mm x W-166mm x H-175mm
Cell type
3.2V 50Ah
Prismatic Cells
Battery module
4 pcs 3.2V 50Ah cells, 1 parallel and 4 serial​
Casing material for single cell
Standard capacity(0.2C5A)
50Ah / 640Wh
> 2000 cycles at 100% Depth of Discharge (DoD)
Cycle life
Under normal usage where the DOD is <80%, cycle life is expected to be up to  5000 cycles
Rated voltage
Working voltage per cell: 3.2V
Charge voltage
Max. charge voltage per cell: 3.65V
Cut-off volate
Nominal 10V
Discharge voltage per cell: 2.50V
Depth of discharge (DoD)
Batteries can be discharged to 100% of the rated capacity
Optimum charge current
Charging time
Approximately 5 hours
When charging from low voltage cut-off point
Rapid charging
Max. charge current 50A (1C3A)
Temperature increase falling within 15°C is normal. Over 15°C will affect the service life of the cells.
Max continuous discharge current
Peak discharge current
2.8C (5 seconds)
Discharge performance in normal temperature
0.2C3A ≥ 100%
1C3A ≥90%
Discharge capacity / standard capacity×100%
Operating temperatures
Standard 0℃~45℃
Discharge -20℃~65℃
Storage -20℃~45℃
Impedance (Max, at 1000Hz.)
≤ 45mΩ
Storage performance
Capacity can be kept ≥ 80% in storage for 12months
Battery should be kept at -20℃ ~ 45℃ where it’s dry, clean and well-ventilated.
Connecting Terminals  Pos (+)  & Neg (-)
IP Rating (Ingress Protection)
Protected from total dust ingress & Protected from low pressure water jets from any direction


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