ULTIMATRON LiFePO4 12,8V 150Ah LX Smart BMS RV underseat battery

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Lithium iron phosphate LiFePO4 12.8V 150Ah with BMS monitoring, Bluetooth and heater. Motorhome battery specially designed for installation under the passenger seat.
5 year Manufacturer’s Warranty!

Free shipping throughout the Spanish peninsula

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Ultimatron LiFePO4 12,8V 150Ah LX Smart BMS RV underseat battery

Ultimatron LifePO4 batteries replace 12V lead-acid batteries and offer all the advantages of lithium iron phosphate, significant weight reduction, very high energy density. Stable voltage ensured even under extreme loads.

This battery has been specially designed for high energy demand.

Extremely high cycle life (3000+ cycles at 80% DoD)

Ultimatron batteries can be connected either in parallel (to increase capacity) or in series (to increase voltage to 24V for example).

LiFePO4 technology is currently by far the safest lithium technology.

5 year manufacturer’s warranty

Each battery is made with the best quality and high performance LiFePO4 cells and the Battery Management System (BMS) is integrated and can be monitored on the Smartphone via Bluetooth.

BMS Description:

The Management System (BMS) is the brain of the battery and incorporates a charge and discharge protection circuit and monitors the following data:

  • Voltage: Total voltage, or individual voltage of each cell.
  • Temperature: Average temperature or temperature of individual cells
  • State of Charge (SOC) or Depth of Discharge (DOD) to adjust the battery level.
  • State of Health (SOH) measures the overall health of the battery
  • Current, input and output of the battery.

Download the App that is compatible with both Android and the Apple Store on your tablet or smartphone and you will have the possibility of monitoring your lithium battery in real time.

The safest lithium technology

The batteries are based on lithium iron phosphate (LiFePO4) technology. This is currently the safest lithium technology. Each battery consists of a high-performance lithium iron phosphate (LiFePo4) accumulator and an integrated battery management system, or BMS for short. This constantly monitors the status of the individual cells and protects them against overloading, overvoltage, and overheating, among other things. The BMS prevents in advance a premature failure of the storage unit due to environmental influences or incorrect use.

Additional information

Weight 12 kg
Dimensions 35,5 × 17,5 × 18,8 cm

Safety instructions

Please note that lithium batteries may only be used by authorized specialists. Incorrect handling or a short circuit can damage the battery.

Technical data

Model ULTIMATRON 12-150 US

Nominal capacity: 150Ah / 1920Wh
Voltage operating range: 10.0 .. 14.6V
Nominal voltage: 12.8 V
Cycles: ≥4000 at 80% DoD
Charging characteristics: CCCV / IU
Final charging voltage: max. 14.6 V
Recommended charge current: 45A
Maximum charge current: 75A
Maximum discharge current: 200A
Peak discharge Cut-Off current: (≤320 mseg.) 620A
Integrated Management System: BMS battery management system integrates Bluetooth 4.0 monitoring with smartphone app
Application / Interconnection: Series and parallel connection possible
Protection: IP65
Temperature range (discharge): -20° C .. + 75° C
Temperature range (charge): -20° C .. +50° C
Temperature range heater: -35° C .. 5° C
Temperature range (storage):
-5° C .. +35° C

Connection: Conical terminals
Warranty: 5 year manufacturer’s warranty
Weight: 16,35 kg
Dimensions (Length x Width x Height): in mm 355 x 175 x 188 +/- 2mm

Transit time

If the product is in stock (green): max. 3 working days (Spanish peninsula), for shipping outside of the Spanish peninsula please contact us.
If the product is not in stock (red): please contact us.


Technical data sheet
User manual
Manual of the APP
Warranty conditions

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