The U1-12RJ is a perfect solution for medical carts, carts on wheels (COWs), or any type of mobile medical device that needs autonomous power.

Built on Lithion Battery’s decade-long experience of producing 12 V batteries for the medical market, the U1-12RJ is a 12-volt, 45 Ah battery that is the size of a Group U1R battery, but with a longer run time than a larger 55 Ah lead acid battery. This battery was specifically designed to communicate with advanced li-ion inverter/chargers such as those made by Tripp Lite® and AMETEK®/POWERVAR®, requiring only a simple RJ45 patch cable to provide communications.


  • Intrinsic safety profile of lithium iron phosphate battery chemistry
  • UL 2054 Recognized and Complies IEC 62133 CB Scheme
  • • Built-in protection from over-charge, over-discharge, and short circuit conditions
  • Communicates battery status and accurate state of charge to inverter-charger or BDI via RJ45 connector
  • Maintenance-free design
  • Recharges completely in as little as 2 hours
  • 24 hour run time when charged during shift changes/breaks
  • >4000 cycles at 80% DOD
  • Series connection up to four (4) batteries (48 V)

Electrical Specifications

Voltage (nominal) 12.8V
Capacity (nominal) @ C/5, 25 °C (typical) 45 Ah
Energy 576 Wh
Discharge Cont./ Peak (30sec) 30 A/ 80 A
Discharge Cutoff Voltage 10 V
Recommended Charge Voltage 14.6 V
Charge Float Voltage Range 13.8 - 14.6 V
Recommended Charge CCCV ≤ 20 A to 14.6 V
Discharge Temperature -10 °C to 45 °C
Charge Temperature 0 °C to 45 °C
Specific Energy 90Wh/kg
Energy Density 122 Wh/l

Mechanical Specifications

Height 183mm | 7.20"
Width 131mm | 5.16"
Length 197mm | 7.76"
Weight 6.4kg | 14.1 lbs
Cell Configuration 4IFpR19/66-30
Terminal Hardarware M6 x 1.0
Terminal Torque 12.4 Nm | 110 in-lbs
Plastic Case Fame Retardant
IP Rating IP56
BCI Grooup U1R