Hot Selling Solar Battery Backup for Home
Dongguan Huawen New Power Co., Ltd. is one of the few authorized manufacturers of solar battery backup for home in the industry. The production process of the product involves critical steps demanding high human skills, allowing us to maintain the specified design quality and avoid bringing in some hidden imperfections. We introduced testing equipment and built a strong QC team to carry out several phases of tests on the product. The product is 100% qualified and 100% safe.
The philosophy of our brand - Huawen revolves around people, sincerity, and sticking to the fundamentals. It is to understand our customers and to offer optimum solutions and new experiences through ceaseless innovation, thus helping our customers maintain the professional image and grow business. We are reaching out to discerning customers with keen sensibilities, and we will develop our brand image gradually and consistently.
This solar battery backup efficiently stores solar power to ensure a reliable electricity supply during grid outages or peak demand times. By harnessing clean energy, it reduces household dependency on traditional power sources and promotes greater sustainability. Its core functionality lies in providing uninterrupted power while enabling efficient utilization of self-generated solar energy.
Solar battery backups for homes store excess solar energy, ensuring uninterrupted power during grid outages while reducing reliance on traditional energy sources. They enable homeowners to maximize renewable energy use and lower electricity bills by utilizing stored solar power at night or during peak hours.
Ideal for regions with frequent power disruptions, high electricity rates, or for eco-conscious households aiming to reduce carbon footprints. These systems are also suitable for off-grid living or backup support during emergencies like storms or blackouts.
Choose based on capacity (kWh) matching your home's energy needs, compatibility with existing solar panels/inverters, and scalability for future expansion. Prioritize high round-trip efficiency (>90%) and long warranty periods (10+ years) to ensure durability and cost-effectiveness.
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(1) Positive electrode: Positive electrode materials occupy a major position in lithium batteries. Their performance directly affects the various performance indicators of lithium batteries. One of the key technologies for developing high-energy lithium-ion batteries is the development of positive electrode materials. Active substances mainly refer to lithium cobalt oxide, lithium manganese oxide, lithium iron phosphate, lithium nickel oxide, and nickel cobalt manganese oxide. Common lithium-ion batteries are divided into the following three categories.
(2) Diaphragm: A special plastic film that allows lithium ions to pass through but is an insulator for electrons. Currently, there are mainly PE and PP and their combinations. There is also a type of inorganic solid diaphragm, such as alumina diaphragm coating, which is an inorganic solid diaphragm.
(3) Negative electrode: The active material mainly refers to graphite, lithium titanate, or carbon materials with a structure similar to graphite.
(4) Electrolyte: Generally an organic system, such as carbonate solvents dissolved with lithium hexafluorophosphate. Some polymer batteries use gel electrolytes;
(5) Battery shell: Mainly divided into hard shell (steel shell, aluminum shell, nickel-plated iron shell, etc.) and soft pack (aluminum-plastic film).
(2) Diaphragm: A special plastic film that allows lithium ions to pass through but is an insulator for electrons. Currently, there are mainly PE and PP and their combinations. There is also a type of inorganic solid diaphragm, such as alumina diaphragm coating, which is an inorganic solid diaphragm.
(3) Negative electrode: The active material mainly refers to graphite, lithium titanate, or carbon materials with a structure similar to graphite.
(4) Electrolyte: Generally an organic system, such as carbonate solvents dissolved with lithium hexafluorophosphate. Some polymer batteries use gel electrolytes;
(5) Battery shell: Mainly divided into hard shell (steel shell, aluminum shell, nickel-plated iron shell, etc.) and soft pack (aluminum-plastic film).
Advantages:
1. High voltage (The working voltage of a single battery can reach 3.7V-3.8V, which is three times that of NiMH batteries and NiCd batteries)
2. High specific energy (That is, the electrical energy stored per unit volume or unit weight is large);
3. Long cycle life;
4. Good safety performance;
5. Environmentally friendly and pollution-free;
6. No memory effect during charging and discharging;
7. Low self-discharge;
8. Fast charging;
9. Wide operating temperature range (-20℃~60℃).
Disadvantages:
High cost;
Not resistant to overcharge and discharge;
High failure rate;
A certain amount of heat will be generated during use;
Lithium-ion batteries require multiple protection mechanisms;
In order to further strengthen the management of the lithium battery industry and promote the high-quality development of the industry, the Electronic Information Department of the Ministry of Industry and Information Technology recently issued the "Standardized Conditions for the Lithium Battery Industry (2024 Edition)" (Draft for Comments) (hereinafter referred to as the "Standardized Conditions") and the "Management Measures for Standardized Announcements in the Lithium Battery Industry (2024 Edition)" (Draft for Comments). Both of the above documents are revised from the 2021 version.
Industry insiders believe that the current lithium battery industry is in a period of deep adjustment. In the future, cultivating high-quality production capacity and continuously improving product quality will be the focus of the lithium battery industry.
■ Improved performance requirements
In recent years, the scale of the lithium battery industry has gradually grown, and product costs have also dropped significantly. Data show that the total output of lithium batteries in China will exceed 940GWh in 2023, a year-on-year increase of 25%, and the total output value of the industry will exceed 1.4 trillion yuan. In the battery segment, the output of consumer, power, and energy storage lithium batteries in 2023 will be 80GWh, 675GWh, and 185GWh respectively, and the installed capacity of lithium batteries (including new energy vehicles and new energy storage) will exceed 435GWh; the International Energy Agency recently released the "Battery and Energy Security Transformation" report, stating that in the past less than 15 years, battery costs have fallen by more than 90%.
With the continuous expansion of the industry scale and the improvement of downstream requirements for product performance, battery product quality and technological innovation are becoming more and more critical to the healthy development of the industry. The reporter noticed that compared with the 2021 version, the "Specification Conditions" put forward higher requirements for the technology and product performance of lithium batteries, and the requirements for power batteries have increased more than energy storage batteries.
The "Specification Conditions" clearly state that the energy density of energy-type single cells using ternary materials (nickel cobalt manganese oxide) for large-power lithium batteries is ≥230Wh/kg, and the energy density of battery packs is ≥165Wh/kg; the energy density of energy-type single cells using other materials such as lithium iron phosphate is ≥165Wh/kg, and the energy density of battery packs is ≥120Wh/kg. The power density of power-type single cells is ≥1500W/kg, and the power density of battery packs is ≥1200W/kg. The cycle life of single cells is ≥1500 times and the capacity retention rate is ≥80%, and the cycle life of battery packs is ≥1000 times and the capacity retention rate is ≥80%.
In terms of energy storage lithium batteries, the "Standard Conditions" clearly stipulate that the energy density of single cells is ≥155Wh/kg, and the energy density of battery packs is ≥110Wh/kg; the cycle life of single cells is ≥6000 times and the capacity retention rate is ≥80%, and the cycle life of battery packs is ≥5000 times and the capacity retention rate is ≥80%.
"Product performance indicators are a benchmark for the development of an industry. my country's lithium battery technology level is relatively strong, and some indicators are already at the global leading level." Zhang Xiang, director of the Vodafone Digital Vehicle International Cooperation Research Center, believes that the release of the "Standard Conditions" is conducive to promoting the quality upgrade of my country's lithium battery industry.
However, the "Standard Conditions" is a guiding document to encourage technological progress and standardized development in the industry. It does not have the pre-emptive and mandatory nature of administrative approval, and is applicable to lithium battery, positive electrode material, negative electrode material, diaphragm, and electrolyte production enterprises.
■ Adhere to high-quality development
Against the background of supply and demand mismatch and the gradual emergence of signs of profit decline, the lithium battery industry has changed its previous high-speed development trend and returned to rational development. Since last year, many companies have suspended or terminated lithium battery projects, and their attitude towards expansion has become more cautious. Under the general trend of reducing costs and increasing efficiency in the industry this year, competition in all links of the lithium battery industry chain has intensified. Zhang Xiang believes that the concentration of the lithium battery industry may further increase in the future. Taking power lithium batteries as an example, the current domestic more than 50 battery suppliers may be reduced to about 10 in the future.
It is worth noting that for the industrial layout and project establishment of lithium batteries, the "Standardized Conditions" proposes to guide enterprises to reduce manufacturing projects that simply expand production capacity, strengthen technological innovation, improve product quality, and reduce production costs; the annual expenses for research and development and process improvement shall not be less than 3% of the main business income, and the actual output in the previous year at the time of declaration shall not be less than 50% of the actual production capacity in the same year.
The above-mentioned statement on production capacity is not the first time. In fact, the "Standardized Conditions for the Lithium-ion Battery Industry" was first issued in 2015, and then revised twice in 2018 and 2021. For the industrial layout and project establishment requirements of lithium batteries, both the 2018 version and the 2021 version clearly and strictly control the simple expansion of production capacity, and the relevant description of production capacity in the "Standardized Conditions" is exactly the same as the 2021 version. In the view of industry insiders, my country has always adhered to the high-quality development route for the lithium battery industry.
However, some industry insiders analyzed that the "Standard Conditions" proposed that enterprises should gradually eliminate backward production capacity and resolutely eliminate low-quality and inefficient battery projects. Previously, many industry insiders mentioned in interviews with reporters that with the intensification of industry competition, the elimination of low-end and inferior production capacity has long become one of the key points of industry development.
Huang Xiuyu, an analyst at Dongguan Securities, said that the Ministry of Industry and Information Technology revised the industry standard conditions to guide technological innovation, transformation and upgrading, and promote high-quality and healthy development. It will accelerate the elimination of backward production capacity and prevent low-price disorderly competition, which will help leading enterprises with technological advantages and high-quality production capacity to improve capacity utilization and profit recovery.
■ Enhance the international competitiveness of enterprises
The lithium battery industry has a strong cyclicality. Considering the two major application scenarios of power and energy storage, the long-term development trend of the lithium battery industry will not change. Overall, enterprises should continue to increase their R&D efforts and make further breakthroughs in technology route selection, material innovation, industrial chain layout, application scenarios, cost reduction and other aspects.
In the view of industry insiders, the release of the "Standard Conditions" has pointed out the direction for the development of the lithium battery industry. The improvement of lithium battery product performance, the reduction of costs, and the elimination of backward production capacity are all conducive to the industry to avoid low-quality and low-price competition. The reporter noticed that in addition to higher requirements for product performance, the "Standard Conditions" also mentioned relevant requirements for green and low-carbon. For example, enterprises should carry out carbon footprint accounting of lithium batteries in accordance with relevant policies and standards; encourage enterprises to increase resource recovery and comprehensive utilization design during the product research and development stage, and strengthen the comprehensive management of resources throughout the life cycle of lithium battery production, sales, use, and comprehensive utilization.
"The revised draft focuses on product quality and low-carbon environmental protection, and actively paves the way for enterprises to go overseas, which is conducive to improving the international competitiveness of enterprises and is generally beneficial to leading enterprises." Huang Xiuyu believes.
At present, facing the situation of intensified domestic competition, lithium battery companies are targeting overseas markets with huge growth. "Everyone has basically the same opinion and wants to go overseas. However, overseas certification standards, market demand and after-sales difficulties are different from those in the domestic market. The overall requirements will be higher, and we will not be able to have too many opportunities for trial and error. Therefore, the quality requirements for products going overseas will be higher, otherwise it will be difficult to bear the after-sales costs." Yan Longlong, assistant dean of Penghui Energy Storage and Power Battery Research Institute, told reporters.
Industry insiders believe that the current lithium battery industry is in a period of deep adjustment. In the future, cultivating high-quality production capacity and continuously improving product quality will be the focus of the lithium battery industry.
■ Improved performance requirements
In recent years, the scale of the lithium battery industry has gradually grown, and product costs have also dropped significantly. Data show that the total output of lithium batteries in China will exceed 940GWh in 2023, a year-on-year increase of 25%, and the total output value of the industry will exceed 1.4 trillion yuan. In the battery segment, the output of consumer, power, and energy storage lithium batteries in 2023 will be 80GWh, 675GWh, and 185GWh respectively, and the installed capacity of lithium batteries (including new energy vehicles and new energy storage) will exceed 435GWh; the International Energy Agency recently released the "Battery and Energy Security Transformation" report, stating that in the past less than 15 years, battery costs have fallen by more than 90%.
With the continuous expansion of the industry scale and the improvement of downstream requirements for product performance, battery product quality and technological innovation are becoming more and more critical to the healthy development of the industry. The reporter noticed that compared with the 2021 version, the "Specification Conditions" put forward higher requirements for the technology and product performance of lithium batteries, and the requirements for power batteries have increased more than energy storage batteries.
The "Specification Conditions" clearly state that the energy density of energy-type single cells using ternary materials (nickel cobalt manganese oxide) for large-power lithium batteries is ≥230Wh/kg, and the energy density of battery packs is ≥165Wh/kg; the energy density of energy-type single cells using other materials such as lithium iron phosphate is ≥165Wh/kg, and the energy density of battery packs is ≥120Wh/kg. The power density of power-type single cells is ≥1500W/kg, and the power density of battery packs is ≥1200W/kg. The cycle life of single cells is ≥1500 times and the capacity retention rate is ≥80%, and the cycle life of battery packs is ≥1000 times and the capacity retention rate is ≥80%.
In terms of energy storage lithium batteries, the "Standard Conditions" clearly stipulate that the energy density of single cells is ≥155Wh/kg, and the energy density of battery packs is ≥110Wh/kg; the cycle life of single cells is ≥6000 times and the capacity retention rate is ≥80%, and the cycle life of battery packs is ≥5000 times and the capacity retention rate is ≥80%.
"Product performance indicators are a benchmark for the development of an industry. my country's lithium battery technology level is relatively strong, and some indicators are already at the global leading level." Zhang Xiang, director of the Vodafone Digital Vehicle International Cooperation Research Center, believes that the release of the "Standard Conditions" is conducive to promoting the quality upgrade of my country's lithium battery industry.
However, the "Standard Conditions" is a guiding document to encourage technological progress and standardized development in the industry. It does not have the pre-emptive and mandatory nature of administrative approval, and is applicable to lithium battery, positive electrode material, negative electrode material, diaphragm, and electrolyte production enterprises.
■ Adhere to high-quality development
Against the background of supply and demand mismatch and the gradual emergence of signs of profit decline, the lithium battery industry has changed its previous high-speed development trend and returned to rational development. Since last year, many companies have suspended or terminated lithium battery projects, and their attitude towards expansion has become more cautious. Under the general trend of reducing costs and increasing efficiency in the industry this year, competition in all links of the lithium battery industry chain has intensified. Zhang Xiang believes that the concentration of the lithium battery industry may further increase in the future. Taking power lithium batteries as an example, the current domestic more than 50 battery suppliers may be reduced to about 10 in the future.
It is worth noting that for the industrial layout and project establishment of lithium batteries, the "Standardized Conditions" proposes to guide enterprises to reduce manufacturing projects that simply expand production capacity, strengthen technological innovation, improve product quality, and reduce production costs; the annual expenses for research and development and process improvement shall not be less than 3% of the main business income, and the actual output in the previous year at the time of declaration shall not be less than 50% of the actual production capacity in the same year.
The above-mentioned statement on production capacity is not the first time. In fact, the "Standardized Conditions for the Lithium-ion Battery Industry" was first issued in 2015, and then revised twice in 2018 and 2021. For the industrial layout and project establishment requirements of lithium batteries, both the 2018 version and the 2021 version clearly and strictly control the simple expansion of production capacity, and the relevant description of production capacity in the "Standardized Conditions" is exactly the same as the 2021 version. In the view of industry insiders, my country has always adhered to the high-quality development route for the lithium battery industry.
However, some industry insiders analyzed that the "Standard Conditions" proposed that enterprises should gradually eliminate backward production capacity and resolutely eliminate low-quality and inefficient battery projects. Previously, many industry insiders mentioned in interviews with reporters that with the intensification of industry competition, the elimination of low-end and inferior production capacity has long become one of the key points of industry development.
Huang Xiuyu, an analyst at Dongguan Securities, said that the Ministry of Industry and Information Technology revised the industry standard conditions to guide technological innovation, transformation and upgrading, and promote high-quality and healthy development. It will accelerate the elimination of backward production capacity and prevent low-price disorderly competition, which will help leading enterprises with technological advantages and high-quality production capacity to improve capacity utilization and profit recovery.
■ Enhance the international competitiveness of enterprises
The lithium battery industry has a strong cyclicality. Considering the two major application scenarios of power and energy storage, the long-term development trend of the lithium battery industry will not change. Overall, enterprises should continue to increase their R&D efforts and make further breakthroughs in technology route selection, material innovation, industrial chain layout, application scenarios, cost reduction and other aspects.
In the view of industry insiders, the release of the "Standard Conditions" has pointed out the direction for the development of the lithium battery industry. The improvement of lithium battery product performance, the reduction of costs, and the elimination of backward production capacity are all conducive to the industry to avoid low-quality and low-price competition. The reporter noticed that in addition to higher requirements for product performance, the "Standard Conditions" also mentioned relevant requirements for green and low-carbon. For example, enterprises should carry out carbon footprint accounting of lithium batteries in accordance with relevant policies and standards; encourage enterprises to increase resource recovery and comprehensive utilization design during the product research and development stage, and strengthen the comprehensive management of resources throughout the life cycle of lithium battery production, sales, use, and comprehensive utilization.
"The revised draft focuses on product quality and low-carbon environmental protection, and actively paves the way for enterprises to go overseas, which is conducive to improving the international competitiveness of enterprises and is generally beneficial to leading enterprises." Huang Xiuyu believes.
At present, facing the situation of intensified domestic competition, lithium battery companies are targeting overseas markets with huge growth. "Everyone has basically the same opinion and wants to go overseas. However, overseas certification standards, market demand and after-sales difficulties are different from those in the domestic market. The overall requirements will be higher, and we will not be able to have too many opportunities for trial and error. Therefore, the quality requirements for products going overseas will be higher, otherwise it will be difficult to bear the after-sales costs." Yan Longlong, assistant dean of Penghui Energy Storage and Power Battery Research Institute, told reporters.
Solar-Powered Lithium Battery Solutions for Remote Monitoring Stations
Huawen New Power • Design principles, sizing methods, and best practices
Contents
Introduction
Why Lithium Batteries
Key Design Considerations
System Sizing & Examples
Recommended Specs (Summary)
System Block Diagram
Work with Huawen New Power
Introduction
Remote monitoring stations—weather, environment, oil & gas, agriculture, security—often operate far from reliable grid power. A combined solar + lithium battery system provides sustainable, efficient, and long-lasting off‑grid energy for sensors, edge controllers, and communication modules.
Why Lithium Batteries for Remote Monitoring?
High Energy Density
Compact footprint with high Wh/kg — ideal for pole‑mount and enclosure‑limited sites.
Long Cycle Life
Typically 2,000–5,000 cycles depending on DoD/C‑rate and thermal profile.
Wide Temperature Range
With proper design, reliable performance across -40℃ ~ 85℃.
Low Self‑Discharge
Retains charge during low‑sunlight seasons; reduces truck‑roll maintenance.
Note: Charging below 0℃ requires dedicated low‑temperature charge strategies or self‑heating packs.
Key Design Considerations
1) Solar Panel Sizing
Base on daily energy consumption and local solar irradiance (PSH).
Include margin (10–30%) for seasonal variability and soiling.
2) Battery Capacity
Size for nighttime load and autonomy days (e.g., 2–5 days).
Prefer DoD ≤ 80% for long life; ≤ 50% for mission‑critical assets.
3) BMS & Controls
Over/under‑voltage, over‑current, short‑circuit, temperature, and cell balancing.
SoC‑aware MPPT/charge controller integration to protect the pack.
4) Environmental Protection
Enclosure IP65+; conformal coating for PCBs in coastal/dusty sites.
Thermal design for hot/cold extremes (heaters, heat spreaders, or ventilation).
System Sizing & Examples
Core Formulas
Parameter
Formula
Notes
Daily Energy (Wh/day)
Load Power (W) × 24
Adjust for duty cycle if intermittent.
Required Storage (Wh)
Daily Energy × Autonomy Days ÷ Usable DoD
Usable DoD: 0.5–0.8 typical for lithium.
Battery Ah (at system V)
Required Storage ÷ System Voltage
Round up and add 10–20% design margin.
PV Array (W)
Daily Energy ÷ Peak Sun Hours ÷ η
η (end‑to‑end efficiency) typically 0.7–0.8.
Example — Mountain Weather Station
Item
Value
Result
Continuous Load
80 W
Daily energy = 1,920 Wh
Autonomy Days
4 days
Storage = 7,680 Wh / 0.8 DoD = 9,600 Wh
System Voltage
48 V
Battery ≈ 200 Ah (add margin → 220–240 Ah)
Peak Sun Hours
4.0 h
PV ≈ 1,920 ÷ (4.0 × 0.75) ≈ 640 W (add 20% → ~770 W)
Numbers above are illustrative; site‑specific irradiance and temperature should be used for final design.
Recommended Specs (Summary)
Category
Recommendation
Rationale
Chemistry
LiFePO₄ (LFP) or NMC with BMS
LFP for longevity/thermal stability; NMC for higher energy density.
Operating Temp.
-40℃ ~ 85℃ (system-level)
Requires pack and enclosure level thermal strategy.
DoD (daily)
≤ 80% (≤ 50% for premium life)
Extends cycle life and reduces stress.
Enclosure
IP65+ aluminum/steel with insulation
Environmental robustness; EMI shielding.
Controller
MPPT with temp sensor & low‑temp charge logic
Maximize harvest; protect cells in sub‑zero charging.
Monitoring
SoC/SoH telemetry, alarms, logs
Remote diagnostics and preventive maintenance.
System Block Diagram (Inline SVG)
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PV Array Mono/Poly 200–1000 W MPPT Controller η ≈ 95–99% Temp sensor BMS UV/OV/OCP/OTP Cell balance Battery Pack LFP/NMC 48 V 100–200 Ah -40℃~85℃ Load Sensors Comms IP65+ Outdoor Enclosure, thermal design for -40℃~85℃
Work with Huawen New Power
We design and manufacture lithium battery systems tailored for remote monitoring, including low‑temperature charging solutions, self‑heating packs, and integrated telemetry. Share your load profile and site conditions; our engineers will size an optimal solar + battery system for guaranteed uptime.
Contact: info@huawennewpower.com | Website: www.huawennewpower.com
© 2025 Huawen New Power. All rights reserved.
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Dongguan Huawen New Power Co., Ltd.
Dongguan Huawen New Power Co., Ltd. is a professional lithium batteries manufacturer integrating R&D, production and sales. The company was established in 2018 and is located in Dongguan City, GUA.
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Contact person: Olina Chang
WhatsApp：0086-15992786791
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Songhu Yungu Dalang Innovation Industrial Park, No. 388, Yangxin Road, Yangchong Village, Dalang Town, Dongguan City, GUA , China