SOK Battery | 100Ah 48v | User-Serviceable Rack Mount Battery

  • Current Connected – The Exclusive Distributor For This Product
  • In Stock, Ready to ship while supplies last!
  • Now UL1973 Certified by Intertek Laboratories
  • 5 slot racks are included free with each purchase of 5 batteries, or sold separately if you wanted less batteries.
  • 48 Volt (51.2 Nominal) 100Ah, 5.12 kWh, LiFePO4
  • 10 Year Full Warranty & 20 Year Typical Lifespan
  • Cells rated for 80% Capacity after 4000 Cycles, 100% DOD @1C Rate
    • Typical capacity at 80% DOD @.5C Rate is over 7000 Cycles
  • Maintenance Free
  • Built-In Smart Battery Management System (BMS)
  • 5 Temperature sensors, protected from low and high temperatures
  • Pre-Charge Circuit to Prevent BMS Damage
  • Detachable cover, user serviceable BMS and cells
  • RS485 & CANBus communication, works with many inverters.
  • Rack Mountable for quick and easy installation
  • Documentation written by a native English technical writer here.

284 in stock (Additional units may be pre-ordered.)




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
  • 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
Shipping Classification UN3480, Class 9, MSDS

Cell Cycle Life Data


4 reviews for SOK Battery | 100Ah 48v | User-Serviceable Rack Mount Battery

  1. Dave F (verified owner)

    I picked up 2 of the 48V server rack batteries. Packaging and Shipping were perfect. Everything in my new system is working perfectly. Great customer support from the team. I had a communication issue between the battery and my inverter. CC worked patiently with me and got the issue resolved going above and beyond my expectations.

    Much appreciated!

  2. Jay Heil (verified owner)

    Just bought 8 of these and I cannot begin to tell you how happy I am with them and the people at CC. Absolutely zero install issues. So clean, easy and simple.
    I wrote a detailed review on the Outback forum for those that want the details:

  3. Stuart Keough (verified owner)

    Only had them up for 4 days but been perfect so far. Everything is cool to the touch even when I was charging and discharging at up to 9.5kw. I’m probably going to end up getting 5 more as 25kwh doesn’t last as long as I thought it does 😀

  4. Jeff A (verified owner)

    Fantastic company, great products, awesome customer service! I’ve been working with Current Connected for awhile now. and have always found them to be helpful, courteous, professional and highly knowledgeable. Thank you for solving our battery dilemma with 6 SOK server rack batteries…and just as importantly, patiently answer all my questions!

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Is this compatible with Sol-Ark Inverters?



Yes! An added bonus is that this battery supports full closed-loop communication with ALL Sol-Ark Inverters. In fact this is the easiest inverter on the market to setup battery communications with. You can read more about this battery communicating with the inverter over in the instruction manual page dedicated to Sol-Ark Inverters here:


Can I pickup from your warehouse?



Please refer to our FAQ here:


If my inverter doesn't communicate, can I still use this battery?



Yes, however you will need to manually set the appropriate settings within the inverter manually, and run these batteries in an open-loop, voltage control based configuration.


Can the SOK server rack batteries be positioned vertically; either on their ends or sides?

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In certain applications, Yes! We have a full page in the instruction manual dedicated to this question. You can check it out here:


What is the stud size on the terminals? 1/2"? 3/8"? Can't find this info in your online manual.



Great question! They are M8x1.25 - for a ring terminal it would be best to use a 5/16" diameter terminal. The recommended torque for tightening these terminals is 20 Ft-lbs

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