Super B Mason 12V20Ah BMS Lithium Battery


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Super B Mason 12V20Ah Lithium Battery

The Mason 12V20Ah power battery is light-weighted, compact and offers high performances. Thanks to its lithium iron phosphate technology and integrated BMS system this new generation battery is extremely reliable and offers optimal safety. This battery is developed for motorsport, motorcycle, automotive and marine applications. Suitable for 12V systems and for use in extreme environments.

Lightweight Power

With a weight of ±4.6kg /10.14lbs, the Mason 12V20Ah power battery saves up to 60% in weight in comparison to traditional lead-acid batteries and is only 1/3 of the size of a conventional battery. This improves not only the performance of your vehicle but also helps to increase the fuel economy.

The battery offers a high level of power, fast charging and a long, maintenance free service life. It also has a stable and flat discharge which means you have over 80% of the batteries capacity available.

Integrated BMS

The Mason 12V20Ah power battery incorporates a Battery Management System (BMS) to ensure a high level of safety during use. The BMS constantly monitors the status of individual battery elements such as cell temperature, cell voltage, charge and discharge currents. The integrated BMS also provides cell balancing.



Safe & Reliable

Due to its high ingress protection class (IP66) the battery is dust tight and waterproof. Therefore the battery can be used in the most extreme environments as well.


Fast charging
Long and maintenance-free lifespan
Compact size
Low self-discharge
Integrated BMS
Safest Lithium Iron Phosphate Technology (LFP)

3 Year Warranty

A 3-year warranty offers the best peace of mind. It is the benefit of years of continuous engineering improvement and proven experience with all of our batteries in the harshest environments.



Nominal Capacity 20Ah
Energy 256Wh
Nominal Voltage 12.8V
Open Circuit Voltage 13.2V
Self Dischrage <3% per month
Cycle life >1000 (at 10C charge/discharge, 100% DoD)
EqPb (Equals lead-acid)  70 to 100Ah



Dimensions (LxWxH) 255 x 101 x 171mm | 10.0” x 4.0” x 6.7”
Weight 4.6 kg / 10.14lbs
Case Material PC - ABS
Ingress Protection IP66
Cell Type / Chemistry Cylindrical - LiFePO4



Charge Method CCCV
Charge Voltage 14.3V - 14.6V
Max Charge Current 66A
End of Discharge Voltage 8V
Discharge Current Continuous 260A
Discharge Pulse Current (1 sec) 892A (45C)


Charge Temperature 0°C to 45°C1 | 32°F to 131°F1
Discharge Temperature -20°C to 55°C | -4°F to 131°F
Storage Temperature -20°C to 45°C | -4°F to 113°F


Certifications CE, UN 38.3, UL 1642 (Cells)
Shipping Classification UN 3480
1 Do not charge below 0°C / 32°F


EAN-13 8718531361812
Battery Designation 4IFpR27/66-8





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