Ultralife Lithium Deep Cycle

Deep Cycle Lithium Ferrous Phosphate batteries for Marine, Renewables, Auxiliary On-Board Power & Portable Power

Ultralife Lithium Deep Cycle Batteries, using Lithium Iron Phosphate (LiFePO₄) technology offer excellent weight saving within the same footprint as industry standard lead acid (VRLA) alternatives. The internal management system allows them to be used as an alternative to AGM or GEL batteries with minimal changes. LiFePO₄  is also an intrinsically safer chemistry with improved safety compared to other lithium options.

The integrated management system monitors the current, voltage and temperature of the battery and the cells. When the battery is used outside of the recommended operating parameters it will react and isolate the battery from the system maintaining safety. When the source of the error is removed the system resets so that the battery can be used again.


  • Between a half and a third lighter than VRLA
  • Very high cycle life compared to VRLA
  • Integrated battery management including cell balancing
  • Fast recharge and superior cycle performance
  • Robust, sealed construction, no maintenance
  • Discharge temperature: -20°C to 60°C
  • Industry standard sizes
  • IEC62133 Certified


  • Portable Power
  • Auxiliary Vehicle Power
  • Marine
  • Solar / Renewable Power
  • Defence
  • Medical Carts
  • Environmental Control Back-up Systems

Internal Battery Protection

  • To maintain safety the battery will automatically shut off when the voltage reaches 10V
  • Over charge protection
  • Over discharge protection
  • Over current protection
  • Temperature protection
  • Cell balancing function


  • To be shipped as Class 9 Hazardous Goods, however please contact DMS technologies for advice
Please contact the sales team for more information +44(0)1794 525400

Ultralife Batteries