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The SOK 48v Server Rack Battery:
SOK is making waves in the 48v battery market with their modular server rack design that offers convenience and versatility. Whether used in a datacenter, telecom room, or whole home backup system, this innovative design allows for high-capacity energy storage in a compact space. Each module has a capacity of 5.12 kWh, enabling a system with five batteries to power heavy loads for hours.
As with all SOK products, the SK48V100 battery pack is designed with safety and quality in mind, while maintaining an affordable price point. This Grade A+ Lithium Iron Phosphate (LiFePO4) battery pack is specifically designed to fit into standard 19” EIA server-rack type battery enclosures, or the custom-built SOK Server Rack.
The battery pack is equipped with a digital battery management system (BMS) that ensures automated and maintenance-free operation, with a lifespan of over 4000 cycles. The assembly features full CAN bus and RS485 protocols, making it compatible with most common 48V inverters, as well as RS-232 control for PC configuration.
Use Applications
The SK48V100 battery is an ideal energy storage solution for medium to large-scale applications that require reliability, quality, safety, and serviceability. It is particularly suited for off-grid and grid-interactive energy storage systems (ESS), telecom and server room backup, and mobile installations that require a 48V battery.
With its expandable design, the SK48V100 batteries can be configured with up to 15 modules per master battery, providing a total system size of 76.8 kW-h per battery cluster. This makes it easy to scale up the system as the energy storage needs increase.
Moreover, in special circumstances, multiple battery clusters can be interconnectable to create even larger centrally managed systems, or they can be joined together without communication connected to achieve an unlimited size. This level of flexibility and versatility makes the SK48V100 battery an excellent choice for a wide range of energy storage applications.
Advantages
SOK's battery assemblies are designed with future serviceability in mind, ensuring that they can be easily repaired in case of failure. Unlike competing 48v server rack battery manufacturers whose products are permanently assembled using laser-welded cell interconnections, plastic injection-molded cases filled with permanent epoxy potting, SOK products are designed to last for decades.
Competing products become rendered useless when a part fails, which means that the entire module has to be thrown away. This is not the case with SOK batteries. Every single part within the battery pack is field serviceable with a simple Phillips screwdriver, which means that downtime and repair costs are significantly reduced, while the environmental impact is minimized.
SOK Battery is at the forefront of battery technology and has set a new standard for battery manufacturers to follow. Its commitment to future serviceability and environmental sustainability is unmatched in the industry.
Specifications
Electrical Properties
Model
SK48v100
Nominal Voltage
51.2 (48v Range)
Nominal Capacity
100Ah
Run Time at 20A Load (~1000w)
300 Minutes
Energy
5120Wh
Self Discharge
< 3% per month (BMS Off)
~2% per day (BMS On)
Max Batteries in Series
1
Max Batteries in Parallel (with BMS communication)
15*
Maximum Terminal Feedthrough Current
350 Amps
Discharge Performance
Max Continuous Discharge Current
100A (1C)
Peak Discharge Current
125A (3 Seconds, automatic shutdown)
Short Circuit Protection
300a, 200µs
BMS Low-Voltage Disconnect
46v
BMS Low-Voltage recover
48v
Charge Performance
Recommended Charge Current
0~63A
Maximum Charge Current (Continuous)
100A
Recommended Charge (Absorption) Voltage
57.6
BMS Cell Protection Voltage
3.7v
BMS Pack Protection Voltage
>58.2v
Temperature Performance
Discharge Temperature
-4°F - 140°F
Charge Temperature
32°F - 113°F
Storage Temperature
23°F - 95°F
Low Temperature Charge Protection
Yes
Internal Temperature Sensors
4 Cell Sensors, 1 BMS Sensor, 1 Ambient Air Sensor
Physical Properties
Case Material
Powder-Coated Steel
Rack Mountable
Yes, 4U
Dimensions
Width: 17.5in (Without ears - Fits standard 19" rack with ears installed)
Height: 7in (4 rack units)
Depth: 18in + 1 1/4" for handles / terminals
Unit Weight
99.2Lbs
Weather Rating
IP20
Third Party Testing
UL1973 Certified by Intertek Laboratories
UL9540A Testing in progress. ETA Q2 2023
UL9540 Testing in progress with Sol-Ark Inverters. ETA Q4 2023