20KWh High capacity Stacked solar storage battery

SKU YL-ES-S Category




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5-year battery backup manufacturers, Onestop solar storage battery integrated supply solution. The stacked High capacity lifepo4 battery wholesale.

Storms, grid overloads, and maintenance work can all cause power outages. Therefore, you can always rely on the ups battery backup power source from the Youlumi home battery backup, which will automatically switch to emergency power operation within a few seconds, which is a good thing in the event of a power failure.

Lifepo4 battery

Youlumi’s solar storage battery YL-ES-S series has a single capacity of 5Kwh, which can be expanded to a Lifepo4 battery with a capacity of 10Kwh by stacking. This process can be completed with only two energy storage batteries, and the stacking method is compared to wall-mounted The Powerwall reduces a lot of space usage and is a very good choice for residential energy storage. Youlumi provides a full range of battery solutions to meet your backup power needs.

High-performance, Safe, and Reliable Lifepo4 batteries

Youlumi is a Lifepo4 Powerwall used in photovoltaic storage systems with a battery management system (BMS), which can be used in conjunction with external inverters and charge controllers. It is suitable for home off-grid or on-grid solar systems. The Lifepo4 battery guarantees the highest level of safety, cycle stability, and performance of Powerwall. YL-ES-S has a modular system of 5 kWh stackable battery packs with 100% discharge capacity. This series can support the parallel use of 2/3/4/5/6 battery packs, easily reaching a storage capacity of 20Kwh.

The World’s Smartest Home Battery Backup Management System

The built-in battery management system integrates with multilevel safety features including overcharge and deep discharge protection, voltage and temperature observation, overcurrent protection, cell monitoring and balancing, and over-heat protection. This high-performance Youlumi home battery backup has a large power capacity, with fast charging and continuous discharge power, providing 98% efficiency. The advanced Lithium Ferro Phosphate (LFP) technology operates a wider temperature range to deliver the most dependable performance. LFP has been proven to be one of the safest Lithium technologies in the industry and is manufactured to the highest standards.

Save Up To 25% On Your Utility

When paired with solar, the Youlumi Powerwall is the perfect way to automatically save money while paying the lowest possible cost for your energy.

Take Complete Control With The Youlumi Power App

Our intelligent software combines weather, utility rate, and historical solar production and energy consumption data to continually drive energy efficiency and improve system performance to meet your specifically tailored goals.

The Youlumi YL-ES-S is the ideal energy storage solution for grid-tied or off-grid solar installations. Lower your utility bill by avoiding the need to buy electricity at peak times with the Youlumi Lithium Battery YL-ES-S. Order online or by PHONE at +86 13923410020


Stacked Solar storage battery

 Non-Toxic & Non-Hazardous Cobalt-Free LFP Chemistry

 No Thermal Runaway with Fire Propagation

 No Heat Generation, Mitigation, Thermal Monitoring or Toxic Cooling

 Extended Operating Temperature -4 to 140F

 100% Efficiency Rate

 Fast Charge & Discharge Rates

 6000 Cycle Life with a 10 Year Warranty

 Cycle One to Several Times Per Day

 Seamless Integration with All Industry Standard Inverter/Charge Controllers

 Built-In Safety ?C BMS with Breaker On/Off Switch for Shipping & Installation

 Modular, Scalable & Proven Performance

 Made in China.

Technical Specifications-Stacked Energy Storage Battery
Model YL-ES-S05 YL-ES-S15 YL-ES-S25
Rated Voltage 51.2V 153.6V 256V
Rated Capacity 100Ah 100Ah 100Ah
Rated Energy 5.12KWh 15.36KWh 25.6KWh
Internal Resistance ??30m?? ??80m?? ??120m??
Cycle Life ??5000 cycles @ 80% DOD, 25??C, 0.5C
??4000 cycles @ 80% DOD, 40??C, 0.5C
Design Life ??5 years
Charge Cut-off Voltage 57.6V 0.5V 172.8V 0.5V 288.0V 0.5V
Max. Continuous
Work Current
Discharge Cut-off Voltage 45.0V 0.2V 134.5V 0.2V 224.0V 0.2V
Charge Temperature 0??C~60??C (Under 0??C extra heating mechanism)
Discharge Temperature -20??C~60??C (Under 0??C Work with reduced capacity)
Storage Temperature -40??C~55??C @60% 25% relative humidity
Dimensions 590*415*375mm / 23.23″x16.34″x14.76″ 590*415*745mm /
590*415*1120mm /
Weight 65kg 195kg 310kg
Protocol (optional) RS232-PC, RS485(B)-PC RS485(A)-Inverter, Canbus-Inverter

Lifepo4 battery wholesale

As the best battery storage manufacturer, Youlumi offers the best price. So that our dealers have a fat profit, our customers can enjoy the best products.

When it comes to commercial, residential and industrial lighting solutions, you can trust UNIMI with 9 years of lighting manufacturing experience.

Youlumi.com is focused on bringing you the LED Work Lights you need - for home, commercial, retail and industrial environments. We work with you one-on-one to provide you with the best lighting solution. 

Why choose Youlemi

Production workshop:

More than 3,000 square meters of large-scale production workshops, first-class factory buildings. At the same time, it operates 5 production lines, with a stable daily output of 1000+ LED work lights and 200+ red physiotherapy series.

Production Management:

Excellent production management experience, has been adhering to the factory management principle of on-time delivery, in order to ensure the high quality of products while maintaining high production efficiency, absolutely guarantee on-time delivery, is a first-class partner.

Product testing and quality control:

Each product has its own strict factory regulations, undergoes strict testing to ensure the quality of the product, and then runs for a certain period of time (depending on the product) to ensure that everything is up to standard. So please rest assured to buy.

Integrating sphere and spectrometer tests:

Each batch of products is sampled using an integrating sphere and a spectrometer before leaving the factory.

We believe that testing is the most basic but most critical link in light manufacturing.

Strict requirements on product quality and responsibility to customers are, in the final analysis, our corporate culture.

Amusement Rice Factory

Ulumi storage and transportation:

The best lighting manufacturers believe that safety is everything.

Youlumi warehouses strictly abide by safety standards. The safety of warehouses and customers' goods is our lifeline.

We will ship the product as soon as possible after it passes the test. We look forward to the approval of satisfied customers.

balloon lighting

Expert lighting help for every project:

Over the decades, we've earned a loyal following of satisfied customers, from homeowners to professional contractors and everyone in between, who need the ideal lighting solution for just the right environment. . Our skills and knowledge in manufacturing and distribution mean you get a high quality selection at the most economical prices.

One to one service

One-to-one service for developing lighting plans:

We'll work with you to understand your budget, find the right option, and get it to you quickly. Have any questions? Our experts will answer you one-on-one throughout the process.  Because we remain committed to being your one-stop source for all lighting—from purchase and installation to maintenance and upgrades.

Keep up with market demand

Research and development keep up with market demand:

Our research and development closely follow the market demand. Support customers to fully customize products. This is a huge advantage of Youlumi over most lighting manufacturers.

Ulumi led test

Excellent R&D team:

We have a R&D team of 20 people, all of whom are senior technical engineers with many years of experience. They have obtained a number of patents and have industry-leading strength in RGB controllers. For example, our new  RGBIC ring light  is unique in the world.

Youlemi R&D Team

1. Payment method:

Sample: Bank TT,Paypal, 100% prepayment;
Bulk order: Bank TT, 30% deposit and balance 70% settled before shipment.

2. Manufacturer:

We have our own factory with more than 6 years of R&D and manufacturing experience.

3. Delivery time:

Sample: 3-7 working days;
Bulk order: 30-40 working days.

4. Quality control:

100% of the lamps will be tested and kept on for 12 hours to test their quality and reliability, and we will also test them;
Each lamp should pass all these QC procedures before being shipped to customers.

5. Shipping method:

By express: DHL, UPS, Fedex, fast and safe shipping method, usually 3-5 working days to arrive;
Air freight: In some areas, air freight is more favorable than express; 10-20 days for delivery;
Sea freight: the most economical transportation method, but the transportation time is longer; you can choose this method for large quantities, heavy but not urgent goods.
Your freight forwarder or freight forwarder.

6. After-sales service:

Quickly respond to customer questions;
If there is any problem with the product quality, we will replace it for you for free.
Make your order happy.

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Request A Free Quote

Fill out the form below and we will get back to you within the next 24hours.