YM POWER TECH LIMITED 852--34604012 sales@libatterypacks.com
Energy Storage 4KWH  Solar Lithium Ion Battery Bank

Energy Storage 4KWH Solar Lithium Ion Battery Bank

  • High Light

    4KWH Solar Lithium Ion Battery Bank


    12v 300ah off grid solar battery bank


    4KW 12v 300ah Solar Battery

  • Features
    Compact Size, Light Weight, Long Cycle Life, Good High-temperature Performance
  • Chemistry Material
    Lithium Ion Phosphate
  • Application
    Solar Storage, Ups, Lead-acid Battery Replacement
  • Nominal Voltage
  • Nominal Capacity
  • Cell Configuration
    3.2V 100ah Lifepo4 Cell Via 3P4S
  • Place of Origin
  • Brand Name
  • Certification
    MSDS, CE, UN38.3, ISO9001
  • Model Number
  • Minimum Order Quantity
    10 units
  • Price
    US$900 - US$1400 per unit
  • Packaging Details
    one unit / carton, 30 units / pallet
  • Delivery Time
    5-10 working days
  • Payment Terms
    Paypal, Western Union, T/T, L/C
  • Supply Ability
    5000 units per day

Energy Storage 4KWH Solar Lithium Ion Battery Bank


Quick Detail:


1. High quality grade A LiFePO4 cells are used

2. reliable BMS to manage each cell status

3. Low discharge rate ≤3% per month

4. With waterproof plastic ABS case

5. Applicable to replace the lead acid batteries direclty





Rechargeable Lithium Ion Batteries 12.8V 12V 300AH, 3KWH Solar System Energy Storage Battery​


This battery pack is is suitable for all terminal load whose working watts no larger than 3000W. If you need larger working watts, please contact us.

Dimensions are optional according to different cell models and different cell arrays. If you have dimensions limit, welcome to Email us to consult for your unique need!



Nominal voltage 12.8V
Nominal capacity 300Ah
Cell type 3.2V 100AH LiFePO4
Cell configuration 4S3P
Pack dimensions 36*216*65mm
Pack weight Approx 39Kg
Standard charging voltage 14.6V
Continuous charging current 20A
Discharging cut-off voltage 9V
Standard discharging current 10A
Max. discharging current 20A
Operation temperature Charge:0°C~44°C
Discharge:-20°C -60°C
Storage temperature

Less than 3 months:-20°C~ 45°C

Less than 1 year:-20°C~25 °C



Full specifications are as follows:

Models Voltage Capacity Energy Weight Dimensions




LFP12-30 12.8V 30Ah 384.0WH 3.8KG 195*130*155mm ABS/PVC/IRON
LFP12-50 12.8V 50Ah 640.0WH 6KG 239*132*205mm ABS/PVC/IRON
LFP12-100 12.8V 100Ah 1280.0WH 13KG 329*172*214mm ABS/PVC/IRON
LFP12-150 12.8V 150Ah 1920.0WH 19KG 483*170*240mm ABS/PVC/IRON
LFP12-200 12.8V 200Ah 2560.0WH 27KG 522*240*219mm ABS/PVC/IRON
LFP12-250 12.8V 250Ah 3200.0WH 31KG 520*269*220mm ABS/PVC/IRON
LFP12-300 12.8V 300Ah 3840.0WH 38KG 520*269*220mm ABS/PVC/IRON
LFP48-30 48V 30Ah 1443.0WH 10KG 440*260*88mm ABS/PVC/IRON
LFP48-50 48V 50Ah 2405.0WH 16KG 442*385*132mm ABS/PVC/IRON
LFP48-100 48V 100Ah 4810.0WH 35KG 442*410*220mm ABS/PVC/IRON
LFP48-150 48V 150Ah 7215.0WH 48KG 442*484*400mm ABS/PVC/IRON


Why lithium-iron-phosphate?
Lithium-iron-phosphate (LiFePO4 or LFP) is the safest of the mainstream li-ion battery types. The nominal voltage of a LFP cell is 3,2V (lead-acid batteries: 2V/cell). A 12.8V LFP battery consists of 4 cells connected in series; and a 25.6V battery consists of 8 cells in series.

Service life
LFP battery does not need to be fully charged. Service life even slightly improves in case of partial charge instead of a full charge. This is a major advantage of LFP compared to lead-acid. Other advantages are the wide operating temperature range, excellent cycling performance, low internal resistance and high efficiency (see below).

In several applications (especially off-grid solar and/or wind), energy efficiency can be of crucial importance.
The round trip energy efficiency of a LFP battery is 92%.
The charge process of lead-acid batteries becomes particularly inefficient when the 80% state of charge has been reached, resulting in efficiencies of 50% or even less in solar systems where several days of reserve energy is required (battery operating in 70% to 100% charged state). In contrast, a LFP battery will still achieve 90% efficiency under shallow discharge conditions.

Cell balancingand and monitoring
LFP batteries have integrated cell balancing and cell monitoring. Up to 5 batteries can be paralleled and up to 4pcs 12V batteries or 2pcs 24V batteries can be series connected,so that a 48V battery bank of up to 1500Ah can be assembled. The cell balancing/monitoring cables can be daisy-chained and must be connected to a Battery Management System (BMS).

Battery Management System (BMS)
BMS Function:
1. Disconnect or shut down the load whenever the voltage of a battery cell decreasesto less than 2,5V.
2. Stop the charging process whenever the voltage of a battery cell increases to more than 4,2V.
3. Shut down the system whenever the temperature ofacell exceeds 50°C. More about BMS features see in the battery BMS datasheets.



Compared with same capacity of lead acid batteries, lifepo4 batteries are 1/2 smaller in size, 2/3 lighter in weight, 5 times longer in cycle life, which are more compact, light-weight and eco-friendly.




                                         Energy Storage 4KWH  Solar Lithium Ion Battery Bank 0



Energy Storage 4KWH  Solar Lithium Ion Battery Bank 1connection cables





Energy Storage 4KWH  Solar Lithium Ion Battery Bank 2How to connect the cables









solar storage, UPS, telecom, lead-acid battery replacement, electric boat, etc

Energy Storage 4KWH  Solar Lithium Ion Battery Bank 3




Competitive Advantage:

1- Company advantages:

a- Quality Management:

Our sample/small order factory has been ISO9001 Quality Management System certifcated. 

Our Pack production base for mass order have passed TS16949 Quality System, ISO14001 Environmental System and OHSAS18001 system certifications. And we have passed the test of the National Motor Vehicle Product Quality Supervision and Inspection Center. We always do daily production as per these systems.

b- Advanced hardware and software facilities

We established high-precision three-coordinate measuring machines, projectors, universal material tensile machines, and other measuring instruments to ensure the effective quality data.

c- Technical advantages:

Our technical team are all from China famous electric vehicle manufacturers. They all have more than 10 years' industry experiences. They have excellent R&D abilities. We also have the ability to develop BMS by ourselves.


2- Product advantages:

a- The cells we use are  domestic high-quality cellsfrom China big cell manufacturers or imported cells from Sumsang, Panasonic.LG, etc .

b- BMS are realiable. BMS within 24S, we develop by ourselves. BMS above 24S, we purchase from China top 3 BMS manufacturers.

c- Advanced battery pack assembly technologies ensures the finished battery packs are of high quality.






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