In stock
(9 customer reviews)

25Kwh Server Rack LiFePO4 Battery


SKU: 5JK48V100PRO Category:


1. Battery Size:442*460*177mm | Weight:45kgs

2. 5 Slots Rack System

3. Capability 100A Max Charge Current | 110A Max Discharge Current

4. 4U Size | 19″ Rack Installation | Rack Stack Installation with Side Handler

  • Power key (for BMS On/Off)

  • 4 AWG wire suggested

  • Create 48 Volt Storage Systems

  • Connect in parallel, up to 16 for 81,920 Watts

  • Automatic system cell balancing

  • All parameters available on LCD display

  • Temperature monitoring (high and low cut-off), 6 temperature sensors

  • Exceptional voltage stability

  • Maintenance-free

  • No hydrogen generation or gassing

  • <70% the weight of similarly sized SLA batteries

Additional information

Weight 107 lbs
Dimensions 22 × 21 × 13 in


Nominal Voltage Nominal Voltage

51.2 V

Nominal Capacity Nominal Capacity

100 Ah

Dimension (LxWxH) Dimension (LxWxH)

17.4 x 18 x 7″ (442x460x177mm)

Approx. Weight Approx. Weight

99 lbs ( 45 Kg )

Capacity @ 20A Capacity @ 20A

300 min

Energy Energy

5120 Wh

Resistance Resistance

< 50mΩ

Self Discharge Self Discharge

< 3%

Cells Cells

3.2V 100Ah Cells

Recommended Charge Current Recommended Charge Current

20 A

Maximum Charge Current Maximum Charge Current

100 A

Recommended Charge Voltage Recommended Charge Voltage

56 – 58.4 V

BMS Charge Cut-Off Voltage BMS Charge Cut-Off Voltage

> 59.2 V

Reconnect Voltage Reconnect Voltage

< 54 V

Balancing Voltage Balancing Voltage

(Cell > 3.4 V When Charging)

Maximum Continuous Dishcarge Current Maximum Continuous Dishcarge Current

100 A

BMS Discharge Current High Warning BMS Discharge Current High Warning

105 A

BMS Discharge Cut-Off Current 110 A (1000ms)
Low Voltage Warning 44.8 V ( 2.8 V/Cell*16)
BMS Discharge Cut-Off Voltage <40V( or Cell<2.5 V) (1 s)
Reconnect Voltage >42.5 V
Short Circuit Protection 300 μs
Terminal Type M8x4
Terminal Torque 106 ~ 132 in-lbs ( 12 ~ 15 N·m )
Case Material Steel
Recommended Connection Wire 6 AWG
Temperature Sensor Quantity 6 pcs
Discharge Temperature – 4 ~ 140 °F ( – 20 ~ 60 °C )
Charge Temperature 23 ~ 131 °F ( – 5 ~ 55 °C )
Recommended Storage Temperature 23 ~ 95 °F ( – 5 ~ 35 °C )
BMS High Temperature Cut-Off 149 °F ( 65 °C )
Reconnect Temperature 140 °F ( 60 °C )



USB-232 Driver (48.62MB)JK48V100PRO LiFePO4  User Manual (442KB)



All our products come with a 10-year limited warranty.

  • Covers any defects in materials or workmanship
  • Covers LiFePO4 cells failure over 10 year
  • Covers the original purchaser only, non-transferable.

Changing any settings in the BMS will VOID the warranty.  Only the factory set parameters are warranted.

9 reviews for 25Kwh Server Rack LiFePO4 Battery

Based on 9 reviews
5 star
4 star
3 star
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1 star
Showing 9 of 9 reviews (5 star). See all 9 reviews
  1. Joe Eyre

    fast reply, answer my questions with patient, good team to cooperate with.

    Uploaded image(s):

    Image #1 from Joe Eyre
    (3) (0)
  2. Steve Spiro

    I ordered 12 of their 48V server rack batteries in two orders of 6 each. They were received as and when promised. They were packed well (on pallets) and arrived with no damage.

    The support staff has been available to answer my questions promptly via email and provided support and warranty replacements for a couple of under preforming cells.

    They have a high quality build which is why I purchased them in the first place and excellent price and continue to make improvements in this product. The built in screen saves you thousands on unneeded monitoring equipment because you can check each battery’s SOC, rate of charge or discharge, individual cell voltage and the temperature sensors and more all from the screen built on each battery.

    My power wall build is still in process and consists of two banks totaling 60 kWh I have 50 kWh just over 1000 Amps already installed and it has worked like a charm for almost 60 days of completely cycling them every 24 hours. Attached is a pic of the system so far but it is still a work in progress. I plan to make updates.

    Uploaded image(s):

    Image #1 from Steve Spiro
    Image #2 from Steve Spiro
    (5) (0)
  3. Lee S. (verified owner)

    Verified reviewVerified review - view originalExternal link

    Battery 🔋 arrived safe and on time. Packing was great. They are heavy, have a friend or two to help, have your space ready.
    Mine have a 104.3 ah and a 103.6 ah, the cops between the two works well, pc interface is monitor only as far as I can tell.
    I have mine hooked up to a EG4-6500 ex. The BMS communication to the inverter works but has shut the inverter off twice in 5 days, went back to user and will wait and see. The batteries stop charging when they hit thier Ah max(varies by battery????). Screen and inputs for on battery is good buttons have a firm click. I think the screen would be better if moved to center of unit, as cables will be in the way of your screen.

    (2) (0)
  4. Andres S. (verified owner)

    Verified reviewVerified review - view originalExternal link

    Reliable, good safety protections and smaller size battery than any in its wh size.

    (2) (0)
  5. Andres S. (verified owner)

    Verified reviewVerified review - view originalExternal link

    Solid battery. My second one and planning on getting more.

    (2) (0)
  6. Marco B. (verified owner)

    Verified reviewVerified review - view originalExternal link

    Battery is working out great, and the screen comes in handy. I was able to pick the battery up right form the warehouse, easy peasy.

    (1) (0)
  7. Allen (verified owner)

    I ordered qty 10 of the 4U | JK48V100PRO 51.2V 100Ah Server Rack LiFePO4 Battery’s. They arrived in a large plywood crate and were in perfect condition, well packed. The sales team and support team were very responsive and informative when I had a few questions. They came with good quality cables and each battery had a separate test sheet inside each box. They came with about a 60% charge and I used the 48V charger to top off each one before initial hookup. Took about 2 days to get them all up to full charge individually. The terminal connections are very solid and hold the cables well. I also purchased two of the 4U / 5U racks and they were also very good quality. After pulling out my 24 2v Rolls Surrette bank I quickly had these hooked into my system and up and running. I have a 14KW solar array broken into three legs that run into 3 Midnite Classic 150s that charge these batteries. These batteries tie into 3 MagnaSine Inverter Converters giving me about 120 A/C Amps to power a 100 amp service into my home. They charge quickly, have minimal heat output and are much cleaner than the lead acid’s I had before. Only maint I need to do is dust them off once in a while. BMS is easy to work with and the system looks good next to my other setups.

    (2) (0)
  8. Richard Witt (verified owner)

    Verified reviewVerified review - view originalExternal link

    Early in 2022 I ordered one 48 volt battery basically to test the waters with the company and their product. I was totally impressed with both and I recently ordered and received three more batteries.

    The sales team, Zhoulun and Emily, were extremely helpful and communicative throughout the process.

    As I am not too far from their warehouse in LA/Long Beach, I opted to pick up my batteries directly from the warehouse, saving the shipping charge. The warehouse personnel were very efficient and helpful both times.

    I wholeheartedly recommend Jakiper Battery/OPSolar and I will use them for future solar related purchases.


    (1) (0)
    • admin (store manager)

      Thanks for purchasing from us.

  9. Ollie

    Incredibl product. Great. Keep up thhe amwzing work.

    (0) (0)
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