48-48-5120

Residential Off-Grid
Rural Microgrid
Utility Surcharge Avoidance
Whole Home Backup

AES RACKMOUNT 48-48-5120 (Product Model 900-0062)

The AES RACKMOUNT ESS Battery Module performs reliably, installs quickly and configures easily for Off-Grid Solar, Whole-Home Backup Power and Microgrids. A high-current fourth-generation Battery Management System (BMS) reliably delivers high current and peak power to low-voltage hybrid inverters. Network RACKMOUNT Battery Modules in closed-loop communication to dramatically elevate inverter battery charging performance. Parallel unlimited kWh in open-loop or up to 180 kWh in a closed-loop system. The optional RACKMOUNT Slimline Enclosure with RACKMOUNT Battery Modules installed is UL9540 DC ESS certified.
MECHANICAL SPECIFICATIONS
Industry Reference 19 Inch Rackmount 3U
Length A (in/mm) 19.6 497.3
Width B (in/mm) 17.3 439.2
Height C (in/mm) 5.3 133.5
Total Height D (in/mm) 5.3 133.5
Weight (lbs/kgs) 97 44
Terminal * Amphenol SurLok Plus
Cell(s) 16S1P
Case Material Galvanized Steel Sheet
IP Rating 20
Electrolyte LiFePO4

NOTE 1: Dimensions have a ±2 mm (0.08 in) tolerance. Weights may vary.
NOTE 2: Refer to terminal guide on website for torque values.

ELECTRICAL SPECIFICATIONS
Open Circuit Voltage (V) 51.2
Charge Voltage (Bulk Vdc) 55.2
Max Absorption Voltage (U1 Vdc) 55.2
Float Voltage (U2 Vdc) 53.6
Suggested Low Voltage Cutoff (Vdc) 48
Max Continuous Charge Current - 1 Hour 95 A
Max. Continuous Charge Current (I Max. Adc) 70 A
Min. Finishing Charge Current (I Min. Adc) 2.5 A
Max Continuous Discharge Current - 1 Hour 95 A
Max Continuous Discharge Current (Adc) 70 A
Max Continuous Discharge Rate (kW) 5.12
Max Peak Current (Adc) 218 A RMS
Self-Discharge (25°C / 77°F) < 3% per month
Charge Temperature Min: 4°C (39.2°F) | Max: 52°C (125.6°F)
Discharge Temperature Min: -17°C (1.4°F) | Max: 52°C (125.6°F)
Storage Temperature Min: -20°C (-4°F) | Max: 55°C (131°F)

Electrical Specifications at 25°C.
Do not exceed maximum voltage at the battery terminals.
CAUTION: Extra considerations must be given to depths of discharge, operating voltages and currents when designing systems for use at maximum operating temperatures.

PERFORMANCE SPECIFICATIONS
Nominal Energy (kWh) 5.12
Usable DoD 100%
Rated Wh Capacity (1C) 5120
Rated Ah Capacity (1C) 100
 
FEATURES

LYNK PORT

  • Connect battery string to LYNK Gateway
  • Multi-battery BMS communication
  • Remote ON/OFF capability

HIGH-CURRENT BMS

  • High peak surge, continuous current
  • Sets charge voltage, broadcasts SoC and temperature, balances cells

LYNK ACCESS

  • Monitor and troubleshoot
  • Configure communication with chargers
  • Export battery data logs
  • Update battery firmware
ACCESSORIES

LYNK GATEWAY

  • Closed-loop charger configuration
  • J1939 / CAN Open / Serial CAN
  • Three programmable relays

BATTERY COMBINER

  • Fully assembled. Quick-connect cables
  • 19-inch rackmount
  • Combine up to 6 Battery Modules
  • Disconnect breaker
  • System ON/OFF button 
BENEFITS

RUNS LONGER

  • 2x Runtime of lead-acid batteries
  • Up to 100% usable capacity

LASTS LONGER

  • 10x the life of lead-acid battery (BCI-06)
  • 10-Year warranty (Requires Registration)
  • 30 MWh Energy Throughput Performance Guarantee

CHARGES FASTER

  • 1C max charge rate, regardless of SoC
  • 2x faster than C/2 rated Lithium batteries

SURGE POWER

  • Up to 2.2C peak power
  • Up to 1C charge/discharge

HIGH-EFFICIENCY

  • Up to 50% more energy efficient than lead-acid batteries
  • Up to 98% round-trip efficiency

DYNAMIC CHARGING

  • Up to 40% faster recharge from 0% to 100% SoC
  • Real-time charge rate optimization

PARALLEL POWER

  • Up to 180 kWh with closed-loop communication (per LYNK)
  • Unlimited in open-loop configuration
  • Linear scaling of charge, discharge, peak capacity

CERTIFICATION STANDARDS

  • IEC 62619
  • UL 1973
  • UL 9540a
  • UL9540 (when installed using the AES Slimline Enclosure 950-0053)
  • Seismic AC 156 (when installed using the AES Slimline Enclosure 950-0053)
  • CEC
  • CE
SHIPPING CLASSIFICATION
  • UN 38.3
  • UN 3480, Class 9 (Lithium batteries)
  • Made in China
 
 
Charging Profile 
gra aes industrial voltage regulated iu curve
Voltage Regulated IU Charging Curve Parameters  
gra aes 14242800 voltage regulated iu charging curve parameters
 

48-48-5120


Printed: 10/11/2026

AES RACKMOUNT 48-48-5120 (Product Model 900-0062)

The AES RACKMOUNT ESS Battery Module performs reliably, installs quickly and configures easily for Off-Grid Solar, Whole-Home Backup Power and Microgrids. A high-current fourth-generation Battery Management System (BMS) reliably delivers high current and peak power to low-voltage hybrid inverters. Network RACKMOUNT Battery Modules in closed-loop communication to dramatically elevate inverter battery charging performance. Parallel unlimited kWh in open-loop or up to 180 kWh in a closed-loop system. The optional RACKMOUNT Slimline Enclosure with RACKMOUNT Battery Modules installed is UL9540 DC ESS certified.
MECHANICAL SPECIFICATIONS
Industry Reference BCI: - 
Length A (in/mm) 19.6 497.3
Width B (in/mm) 17.3 439.2
Height C (in/mm) 5.3 133.5
Total Height D (in/mm) 5.3 133.5
Weight (lbs/kgs) 97 44
Terminal * Amphenol SurLok Plus
Cell(s) 16S1P
Case Material Galvanized Steel Sheet
IP Rating 20
Electrolyte LiFePO4

NOTE 1: Dimensions have a ±2 mm (0.08 in) tolerance. Weights may vary.
NOTE 2: Refer to terminal guide on website for torque values.

ELECTRICAL SPECIFICATIONS
Open Circuit Voltage (V) 51.2
Charge Voltage (Bulk Vdc) 55.2
Max Absorption Voltage (U1 Vdc) 55.2
Float Voltage (U2 Vdc) 53.6
BMS Max. Voltage protection (Vdc) 58.24 (Approximately)
Suggested Low Voltage Cutoff (Vdc) * 48
BMS Min. Voltage protection (Vdc) 40.0 (Approximately)
Max. Continuous Charge Current (I Max. Adc) 70 A
Min. Finishing Charge Current (I Min. Adc) 2.5 A
Max Continuous Discharge Current (Adc) 70 A
Max Continuous Discharge Rate (kW) 5.12
Max Peak Current (Adc) 218 A RMS
Self-Discharge (25°C / 77°F) < 3% per month
Charge Temperature Min: 4°C (39.2°F) | Max: 52°C (125.6°F)
Discharge Temperature Min: -17°C (1.4°F) | Max: 52°C (125.6°F)
Storage Temperature Min: -20°C (-4°F) | Max: 55°C (131°F)

Electrical Specifications at 25°C.
* Do not exceed maximum voltage at the battery terminals.
CAUTION: Extra considerations must be given to depths of discharge, operating voltages and currents when designing systems for use at maximum operating temperatures.

PERFORMANCE SPECIFICATIONS
Nominal Energy (kWh) 5.12
Usable DoD 100%
Rated Wh Capacity (1C) 5120
Rated Ah Capacity (1C) 100
 
Minutes of Discharge
@25A @56A @75A @85A @100A
 
FEATURES

LYNK PORT

  • Connect battery string to LYNK Gateway
  • Multi-battery BMS communication
  • Remote ON/OFF capability

HIGH-CURRENT BMS

  • High peak surge, continuous current
  • Sets charge voltage, broadcasts SoC and temperature, balances cells

LYNK ACCESS

  • Monitor and troubleshoot
  • Configure communication with chargers
  • Export battery data logs
  • Update battery firmware
ACCESSORIES

LYNK GATEWAY

  • Closed-loop charger configuration
  • J1939 / CAN Open / Serial CAN
  • Three programmable relays

BATTERY COMBINER

  • Fully assembled. Quick-connect cables
  • 19-inch rackmount
  • Combine up to 6 Battery Modules
  • Disconnect breaker
  • System ON/OFF button 
BENEFITS

RUNS LONGER

  • 2x Runtime of lead-acid batteries
  • Up to 100% usable capacity

LASTS LONGER

  • 10x the life of lead-acid battery (BCI-06)
  • 10-Year warranty (Requires Registration)
  • 30 MWh Energy Throughput Performance Guarantee

CHARGES FASTER

  • 1C max charge rate, regardless of SoC
  • 2x faster than C/2 rated Lithium batteries

SURGE POWER

  • Up to 2.2C peak power
  • Up to 1C charge/discharge

HIGH-EFFICIENCY

  • Up to 50% more energy efficient than lead-acid batteries
  • Up to 98% round-trip efficiency

DYNAMIC CHARGING

  • Up to 40% faster recharge from 0% to 100% SoC
  • Real-time charge rate optimization

PARALLEL POWER

  • Up to 180 kWh with closed-loop communication (per LYNK)
  • Unlimited in open-loop configuration
  • Linear scaling of charge, discharge, peak capacity

CERTIFICATION STANDARDS

  • IEC 62619
  • UL 1973
  • UL 9540a
  • UL9540 (when installed using the AES Slimline Enclosure 950-0053)
  • Seismic AC 156 (when installed using the AES Slimline Enclosure 950-0053)
  • CEC
  • CE
SHIPPING CLASSIFICATION
  • UN 38.3
  • UN 3480, Class 9 (Lithium batteries)
  • Made in China
Charging Profile 
gra aes industrial voltage regulated iu curve
Voltage Regulated IU Charging Curve Parameters  
gra aes 14242800 voltage regulated iu charging curve parameters
 

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