U-Charge® RT Modules (for 12V, 24V, 36V, to 48V systems)

u1-12rt-facing-leftU-Charge® RT series is a family of 12V and 24V lithium iron phosphate batteries based on the standard U1 size.  They are ‘plug-and-play’ replacement modules for lead acid applications typically requiring better run time, zero maintenance, reduced charge time and high frequency operation readiness.

The U-Charge® RT series offers built-in automatic protection and an optional State of Charge indicator (Battery Discharge Indicator) and can be put in systems up to 48V. At less than half the weight of a comparatively sized lead-acid battery module, the U-Charge RT offers 70% more runtime and is a increasingly being used for applications that are restricted by lead acid battery limitations and replacement down time.

  • Built-in automatic protection for over-charge, over-discharge and over-temperature conditions
  • No battery management system required
  • Series connection up to four (4) batteries (48 V)
  • Intra-module balancing
  • LED battery status indicator
  • Maintenance-free
  • Flame retardant plastics
  • Thousands of cycles, under normal conditions
  • Can be charged using most standard lead-acid chargers
  • Optional battery discharge indicator ( U-BDI ) for SOC display and fault indication

In terms of overall performance, U-Charge® RT displays excellent characteristics.

Current cycling demonstrates minimal linear fade reaching over 2500 full 100% charge and discharge cycles to 80% rated capacity.

U-Charge® Temperature Performance
U-Charge® Life Cycle Performance
U-Charge® Discharge Performance @ 23°C
U-Charge® Charge Performance

U-Charge RT Peripherals ensure optimum performance, monitoring and control of battery modules.

Battery Discharge Indicator

The BDI can be used with the U-Charge RT battery modules to show State of Charge/”Fuel Gauge” and any fault conditions.

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Diagnostics Toolkit

The Diagnostics ToolKit enables a user to view individual cell voltages and temperatures within each module, as well as the ability to put the module into sleep mode for storage situations.

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Comparing U-Charge® LiFeMgPO4 to other chemistry

U-Charge RT Lithium Iron Magnesium Phosphate (LiFeMgPO4) modules have considerably greater energy density making them particularly suitable for numerous applications. LiFeMgPO4 is considered safer, less toxic, and more energy efficient with significantly longer cycle life.

Compared to Lead Acid

Commonly used in starter batteries for internal combustion engine (ICE) vehicles Lead Acid is normally a low-cost secondary battery, composed of a lead-dioxide cathode, a sponge metallic lead anode and a sulphuric acid solution electrolyte. The heavy metal element makes lead acid batteries toxic and improper disposal can be hazardous to the environment.

Disadvantages of lead acid batteries include

  • Failure between several hundred and 2,000 cycles
  • Comparatively low energy density,
  • Long charge time
  • Careful maintenance requirements

Compared to Nickel Cadmium (NiCd)

Disadvantages include:

  • High rate of self-discharge at high temperature.
  • Cadmium is highly toxic
  • Use in batteries is controlled
  • Environmental recycling issues
  • Memory effect is one of the biggest disadvantages to using NiCd.

Compare LiFeMgPO4 to Nickel Metal Hydride (NiMH) suffers from:

  • Poor charge retention
  • Memory effect
  • Higher cost

Sodium (Na-NiCl2)

When not in use Sodium (Na-NiCl2) batteries typically require to be left on charge, in order to be available for use when needed.

If shut down,the reheating process lasts 24 hours, and then a normal charge process of 6-8 hours is required for a full charge.
Inefficiency due to energy consumption when not in use.

Certifications for U-Charge RT batteries

U1-12RT Certifications:

IEC 62133, FCC Class B, CE, UL 1642 (cells only), UL 2054, IP56, RoHS

U1-24RT Certifications:

FCC Class B, CE, IEC 62133, IP56, UL 1642 (cells only), UL 2054, RoHS

Module Container/Cover: flame retardant ABS/PC material (compliant to UL 94-V0, UL 94 5VB & L.O.I 32% ISO 4589 and ASTM D2863)

U-Charge RT batteries shipping classification: UN3480, Class 9

Read more about our Certifications here.

U-Charge® RT Product Line

U1-12RT U1-12RT 12.8 V 40 Ah 6.5 kg PN# 1004461
U1-24RT U1-24RT 25.6 V 20 Ah 6.4 kg PN# 1005997

Download the U-Charge® RT Series Data Sheet

Tell us about your application and let our highly experienced sales and engineering staff assist in suggesting the right configuration.