Ideal for applications in Marine, Vehicles, Caravans, RV's, Portable power storage, External enclosures and as a drop-in replacement for AGM/GEL Lead Acid Batteries. Fits in most Group 31 sized battery boxes (L 325mm x W 173.5mm x H 226mm)

Pylontech RT 12V Series All-purpose Lithium-Ion Battery

The Pylontech 12V series are all-purpose lithium-ion battery modules. With cutting edge LFP (Lithium Iron Phosphate) cells, embedded BMS (Battery Management System) and robust mechanical design, Pylontech RT12V series products provide inherent safety, extremely high reliability and zero maintenance. Compared to lead-acid based batteries with the same capacity, the Pylontech batteries have twice the usable capacity, more than 3 times the life cycle, with only 40% of the weight. They are the perfect replacement to lead acid-based batteries in applications such as marine, caravan/RV, golf carts and solar storage. A superior solution in all applications. Pylontech Auto App Manual for RT12100G31

Pylontech RT12100G31 Key Features

Auto-Balance Multiple Batteries in Parallel

Connects multiple batteries in parallel safely without internal non-uniformity issues.

Expandable up to 4 series and 4 parallel for up to 48V 400Ah

Customise your system. 16 units can be scaled in a variety of series and parallel such as 4 Series 4 Parallel, 2 Series 8 Parallel, 1 Series 16 Parallel.


The internal Battery Management System (BMS) provides comprehensive protection to the battery and delivers sophisticated management of charging and discharging. The built-in battery also complies with the safety standard IEC62619 and is UN38.3 Certified, so you can use it with confidence.

Uncompromising Quality

State-of-the-art battery cells ensure a lifespan of more than 4000 cycles, 100A continuous discharge current (200A for 30 seconds), and a wide range of working operating temperatures of -20℃ - 60℃.

Upgraded waterproof & cold resistance built-in heater

In addition to being waterproof, the RT12100G31 also has a built-in heater, so you can use it down to -20℃ and storage down to -40℃

Excellent BMS (Battery Management System)

Pylontech is one of the top manufacturers in the global market for household storage batteries. Pylontechs internal BMS monitors and protects overcharge, over-discharge, overcurrent, short circuit, temperature, etc. with high accuracy. In addition, the information grasped by BMS can be sent to the outside by Bluetooth or CAN communication. High-performance, power-saving BMS protects the internal battery firmly.


CAN, RS485, Bluetooth and Dry Contact communications enable flexible data transmission to meet the needs of different applications.

Pylontech RT12100G31 complies with AS IEC 62619, which is required for lithium-ion batteries installed in vehicles under AS/NZS 3001.2:2022 Connectable electrical installations and supply arrangements.

Pylontech RT12100G31 Advantages

  • Twice the usable capacity (compared to the same capacity of FLA/AGM/GEL) 
  • Deep Cycle (Auto cut-off at 10V)
  • Calendar life of 10+ years, the cycle life of 4000 times
  • High charging current
  • Embedded BMS
  • RS485, CAN and Bluetooth 5 Connectivity
  • Connect up to 4x Parallel and 4x Series (16 batteries in total) 
  • Zero maintenance
  • Working Temperature -20℃ to 60℃
  • Rugged mechanical design
  • Ingress protection IP67 Rating - great for marine applications
  • Built-in heater
  • Serviceable design (marine grade stainless steel screws to replace BMS and/or cells)



Nominal Voltage 12.8V
Rated Capacity 100Ah
Capacity 1280Wh
Dimensions 325mm x 173.5mm x 226mm
Gross Weight 13KG
IP Rating IP67
Terminal Connection M8 Bolt


Voltage Range 10.8 - 14.4V DC
Charge Voltage 14-14.4V DC
Continuous Charge Current 50A
Continuous Discharge Current 100A
Peak Current 200A @ 30 Seconds


Working Temperature -20℃ - 60℃
Storage Temperature -40℃ - 60℃
Humidity Range 5% - 95% (without condensing)
Altitude < 4000 Metres
Cycle life Up to 6000 cycles
Parallel Capable Up to 4 in Parallel
Series Capable Up to 4 in Series
Warranty 3 Years
RS485 115200bps
CAN 500kbps
Bluetooth BLE5.0
Dry Contactor 2x Input & 2x Output


SAE J930, SAE J1455, UL1973, IEC62619, FCC, CE, Bluetooth SIG, UN38.3


SKU PYL.RT12100G31
Model # RT12100G31
Brand Pylontech
Shipping Weight 15.0000kg
Shipping Width 0.370m
Shipping Height 0.290m
Shipping Length 0.265m
Shipping Cubic 0.028434500m3
Unit Of Measure ea

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