YM POWER TECH LIMITED 852--34604012 sales@libatterypacks.com
Home Storage 48V 50AH 2.5KWH Solar Charged Lithium Ion Battery Pack

Home Storage 48V 50AH 2.5KWH Solar Charged Lithium Ion Battery Pack

  • High Light

    Powerbox B2.5 solar Lithium Ion Battery Bank


    Powerbox B2.5 50AH 2.5KWH Battery Pack


    Powerbox B2.5 51.2V 50AH lithium battery

  • Features
    Compact Size, Light Weight, Long Cycle Life, Good High-temperature Performance
  • Nominal Voltage
  • Nominal Capacity
  • Chemistry Material
  • Dimensions
  • Weight
  • Application
    Solar Storage, Ups, Lead-acid Battery Replacement
  • Place of Origin
  • Brand Name
  • Certification
    CE, UN38.3, IEC62040, EN62619, TUV
  • Model Number
  • Minimum Order Quantity
    10 units
  • Price
  • Packaging Details
    one unit / wooden case, 90 units / 20 foot container
  • Delivery Time
    5-10 working days
  • Payment Terms
    Payoneer, Paypal, Western Union, T/T, L/C
  • Supply Ability
    5000 units per day

Home Storage 48V 50AH 2.5KWH Solar Charged Lithium Ion Battery Pack



Home Solar Storage System 48V 50AH 2.5KWH Lithium Ion Phosphate Batteries With 7-year Warranty


YM power has designed several models of lithium ion batteries for solar storage system. There are power Wall, power Cube, power Tower and power Rack.

Power Wall design is supposed to be most popluar among most coutries since it can be mounted on the wall so that can save much space. And the different capacity versions can meet 99% household needs.


Below is power Wall - 2.5KWh version.

It is suitable for terminal load whose working watts ≤2500W.  With several modules in parallel, you can get batteries in different capacities.

Note: It is NOT recommended to connect them in series.



Quick Detail:


1. Modular design: 48v 50ah module each, easy for parallel get different capacities to meet different customers' needs

2. High quality: Pylotech pouch type LiFePO4 cells inside

3. Intelligent: reliable BMS to manage each cell status

4. long calendar life: 6000+ cycles

5. Long warranty period: 7 years

6. Certifications: TUV CE IEC62040 UN38.3 CEC



Nominal voltage 48V
Nominal capacity 50Ah
Dimensions(H*W*D) 928*555*210mm
Pack weight Approx 47Kg
Protection level IP65
Standard charging voltage 54.75V
Standard charging current 10A
Max. continuous charging current 50A
Discharging cut-off voltage 40V
Standard discharging current 25A
Max. continuous discharging current 50A
Communication CAN / RS485 / DRY CONTACT
Operation temperature Charge:0°C~45°C
Storage temperature

Less than 3 months:-20°C~ 45°C

Less than 1 year:-20°C~25 °C

Humidity recommended ≤75%


Powerbox Series:

Home Storage 48V 50AH 2.5KWH Solar Charged Lithium Ion Battery Pack 0

Home Storage 48V 50AH 2.5KWH Solar Charged Lithium Ion Battery Pack 1

Home Storage 48V 50AH 2.5KWH Solar Charged Lithium Ion Battery Pack 2Home Storage 48V 50AH 2.5KWH Solar Charged Lithium Ion Battery Pack 3



Full models are as follows:

Models Voltage Capacity Energy Weight Dimensions




Power Box 48V 50Ah 2400Wh 47KG 928*555*210mm IRON
  48V 100Ah 4800WH 69KG 928*555*210mm IRON
  48V 150Ah 7200WH 91KG 928*555*210mm IRON
  48V 200Ah 9600WH 113KG 928*555*210mm IRON
Power Rack 48V 800Ah 38.40KWH 38KG 520*269*220mm IRON
Power Tower 288V 37Ah 10.65KWH 149KG 800*483*285mm IRON
  384V 37Ah 14.20KWH 192KG 988*510*510mm IRON
  480V 37Ah 17.76KWH 235KG 1175*510*510mm IRON
  576V 37Ah 21.31KWH 278KG 1360*510*510mm 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. 



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.




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





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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