Chisen 6-DMF-58- Comprehensive Analysis of the 12V 58Ah Lead-Acid Battery
2026-08-09
Chisen 6-DMF-58 (12V/58Ah) deep-cycle VRLA battery for electric tricycles & motorcycles. Maintenance-free, wide temperature range, long life. OEM & factory-direct.
Chisen 6-DMF-52- Comprehensive Analysis of the 12V 52Ah Lead-Acid Battery
2026-08-09
Chisen 6-DMF-52 (12V/52Ah) deep-cycle VRLA battery for electric tricycles & motorcycles. Maintenance-free, wide temperature range, long life. OEM & factory-direct.
Chisen 6-DMF-45- Comprehensive Analysis of the 12V 45Ah Lead-Acid Battery
2026-08-09
Chisen 6-DMF-45 (12V/45Ah) deep-cycle VRLA battery for electric tricycles & motorcycles. Maintenance-free, wide temperature range, long life. OEM & factory-direct.
Chisen 6-DMF-40- Comprehensive Analysis of the 12V 40Ah Lead-Acid Battery
2026-08-09
Chisen 6-DMF-40 (12V/40Ah) deep-cycle VRLA battery for electric tricycles & motorcycles. Maintenance-free, wide temperature range, long life. OEM & factory-direct.
Chisen 6-DMF-38- Comprehensive Analysis of the 12V 38Ah Lead-Acid Battery
2026-08-09
Chisen 6-DMF-38 (12V/38Ah) deep-cycle VRLA battery for electric tricycles & motorcycles. Maintenance-free, wide temperature range, long life. OEM & factory-direct.
Chisen 6-DMF-32- Comprehensive Analysis of the 12V 32Ah Lead-Acid Battery
2026-08-09
Chisen 6-DMF-32 (12V/32Ah) deep-cycle VRLA battery for electric tricycles & motorcycles. Maintenance-free, wide temperature range, long life. OEM & factory-direct.
Chisen OPzV2-2000- Comprehensive Analysis of the Tubular Gel Battery
2026-08-08
ChisenOPzV2-2000 2V2000Ah tubular gel battery, 20+ yr float life, maintenance-free, low self-discharge. Factory direct, ISO, OEM+bulk+TCO: energy storage, power systems.
Chisen OPzV2-1500- Comprehensive Analysis of the Tubular Gel Battery
2026-08-08
ChisenOPzV2-1500 2V1500Ah tubular gel battery, 20+ yr float life, maintenance-free, low self-discharge. Factory direct, ISO, OEM+bulk+TCO: energy storage, power systems.
Chisen OPzV2-1200- Comprehensive Analysis of the Tubular Gel Battery
2026-08-08
ChisenOPzV2-1200 2V1200Ah tubular gel battery, 20+ yr float life, maintenance-free, low self-discharge. Factory direct, ISO, OEM+bulk+TCO: data centers, large UPS.
Chisen OPzV2-1000- Comprehensive Analysis of the Tubular Gel Battery
2026-08-08
ChisenOPzV2-1000 2V1000Ah tubular gel battery, 20+ yr float life, maintenance-free, low self-discharge. Factory direct, ISO, OEM+bulk+TCO: data centers, large UPS.
Chisen OPzV2-600- Comprehensive Analysis of the Tubular Gel Battery
2026-08-08
ChisenOPzV2-600 2V600Ah tubular gel battery, 20+ yr float life, maintenance-free, low self-discharge. Factory direct, ISO, OEM+wholesale+free samples: medium base stations, solar storage.
Chisen OPzV2-500- Comprehensive Analysis of the Tubular Gel Battery
2026-08-08
ChisenOPzV2-500 2V500Ah tubular gel battery, 20+ yr float life, maintenance-free, low self-discharge. Factory direct, ISO, OEM+wholesale+free samples: medium base stations, solar storage.
Chisen OPzV2-420- Comprehensive Analysis of the Tubular Gel Battery
2026-08-08
ChisenOPzV2-420 2V420Ah tubular gel battery, 20+ yr float life, maintenance-free, low self-discharge. Factory direct, ISO, OEM+wholesale+free samples: medium base stations, solar storage.
Chisen OPzV2-350- Comprehensive Analysis of the Tubular Gel Battery
2026-08-08
ChisenOPzV2-350 2V350Ah tubular gel battery, 20+ yr float life, maintenance-free, low self-discharge. Factory direct, ISO, OEM+wholesale+free samples: medium base stations, small UPS.
Electric Vehicle Battery Maintenance and Charging Tips
2025-02-13
Proper battery maintenance is essential for every EV owner: avoid overcharging, watch for heat, leakage, or swelling, and use the odometer to schedule charging and extend battery life.
Understanding EV Battery Discharge: Principles and Precautions
2025-02-12
Learn how EV batteries discharge and key precautions: avoid deep over-discharge, use the speedometer to judge battery status, and protect capacity to extend battery life.
Lead-Acid vs. Lithium Batteries for Electric Vehicles: A Comparison
2025-02-11
Compare lead-acid and lithium batteries for e-bikes on price, range, maintenance, and market acceptance. Lead-acid remains dominant; lithium must overcome cost and usability barriers to catch up.
Power Batteries vs. Ordinary Batteries: Key Differences Explained
2025-02-10
This article compares power batteries and ordinary batteries on nature, capacity, discharge power, and applications, and looks ahead to future trends and environmental considerations.
The Core of Electric Vehicles: Battery and Motor Basics
2025-02-09
This article covers EV batteries and motors: the features and history of lead-acid batteries, motor types, structure and working principles, and why this knowledge matters for users and manufacturers.
EV Battery Discharge Tester: Functions and Features Explained
2025-02-08
This article explains the dedicated EV battery discharge tester: its role in capacity testing and battery matching, plus features such as self-powering, high-precision measurement, and easy operation.
How to Choose the Right EV Battery: A Buying Guide
2025-02-07
This guide explains how to buy an EV battery: choose a reliable brand, match the battery to your travel needs, and inspect product labels and appearance for quality and safety.
This article explains why EV batteries swell, known as thermal runaway: overcharging, casing modification, high ambient temperature, and separator damage, and advises professional repair for safety.
LiFePO4 batteries offer high specific energy, excellent safety and a long cycle life, plus longer lifespan than NiCd or lead-acid batteries, with low pollution.
A comprehensive glossary of common battery terms: from capacity, discharge and electrolyte to AGM, VRLA batteries, self-discharge, C20 rating and terminal voltage.
What Documents Are Needed to Apply for a Bank Loan?
2023-01-23
Documents needed for a bank loan include identity and marriage certificates, household registration, income proof, property certificate, business license and bank statements.
What Are the Main Loan Models for Distributed PV Projects?
2023-01-23
Distributed PV loan models include direct bank loans for qualified investors and the unified borrowing and repayment model, which channels credit through a unified platform.
Bank Loan Amount, Term, Interest Rate and Repayment for PV Projects
2023-01-23
For distributed PV projects, users can borrow up to 80% of total investment with terms up to 15 years, flexible bank pricing, and equal installment or equal principal repayment.
Can Users with Insufficient Funds Get Bank Loans for Distributed PV Systems?
2023-01-23
Yes. Distributed PV investment is stable, profitable and low risk. Banks and financial institutions now offer loans and installment financing for distributed PV systems.
Benefits of Installing a PV System for Commercial and Industrial Users
2023-01-23
PV benefits commercial and industrial users through high self-consumption returns, short payback, lower emissions, carbon-target compliance in pilot cities, and better image.
Energy Performance Contracting (EPC) is a market-oriented energy-saving mechanism where reduced energy costs pay for the full cost of energy-saving projects.
What Construction and Business Models Are Available for Distributed PV Systems?
2023-01-23
Distributed PV projects must use lawful buildings. Owners may self-build and keep the returns, or sign use/lease and energy management contracting agreements with power users.
How to Estimate Subsidy Income for Distributed PV?
2023-01-23
Subsidy income has three parts: national subsidy, self-consumed electricity savings, and coal-fired purchase price for surplus power fed to the grid. Income varies by mode.
How to Estimate the Cost per kWh of Distributed PV Systems?
2023-01-23
Generation cost depends on labor costs, solar resources, installation, investment, tariffs, and lifespan. With a 20-year lifespan, distributed PV cost is about RMB 0.7-1.4/kWh.
How to Estimate a Home PV System Investment and Payback Time?
2023-01-23
Home distributed PV investment depends on installation capacity and environment. A typical home installs about 10 kW, costing around RMB 40,000-100,000. Payback takes 6-10 years.
What Licensed PV Testing and Certification Bodies Are There in China?
2023-01-23
Certification bodies: Beijing CGC and China Quality Certification Center (CQC). Testing bodies: CAS PV Quality Testing Center, CETC 18th Institute, Shenzhen, Yangzhou, and more.
Can Distributed PV Generation Be Monitored Online?
2023-01-23
Yes. Grid companies cooperate with energy authorities to monitor distributed PV generation. With monitoring, output, equipment parameters, and environment can be checked online.
Approved meters at the grid connection point measure feed-in power, and the local dispatch center monitors it remotely. Owners can build systems to monitor and optimize feed-in.
Are PV Monitoring Data and Meter Measurement Data the Same?
2023-01-23
PV monitoring data and meter data are not necessarily the same. They match only with identical metering equipment at the same point; different devices and losses cause deviations.
How to Judge PV System Stability, Power Quality, and Appliance Safety?
2023-01-23
Test power quality at the grid connection point against national standards. If compliant, the PV system is stable. Fault protectors cut power, keeping appliances safe.
How to Judge the Quality of Your PV System and Resolve Problems?
2023-01-23
Owners judge a PV system by checking appearance, certifications, safety (grounding, insulation, lightning protection), and efficiency; issues should be fixed by the builder.
What Repair Procedure Do PV Suppliers Follow for Quality Issues?
2023-01-23
After a quality issue, on-site staff report the problem to the supplier, who sends an engineer to solve it. If key equipment is involved, manufacturer engineers come within a week.
How to Judge the Quality of a Distributed PV Grid-Connected System
2023-01-23
The quality of a distributed PV grid-connected system is confirmed by comprehensive testing of components and the system, covering safety and electrical performance.
What Product Certifications Are Required to Qualify for Government Subsidies?
2023-01-23
At grid connection acceptance, the PV system must meet quality and safety standards. Major equipment needs domestic certification: modules, inverters, combiner boxes.
How to Choose Qualified PV System Accessories and What Warranty to Expect?
2023-01-23
Choose accessories certified by approved bodies. Key parts must match certified products and fit the system design. Modules: 5-year warranty; inverters: 2-year.
Do Qualified Components Mean the PV System Needs No Testing?
2023-01-23
Although a PV system consists of components, qualified parts do not mean the integrated system is qualified. Overall design, configuration, safety, and performance must be tested.
Why Is Quality Monitoring of Distributed PV Systems Important?
2023-01-23
Quality monitoring of distributed PV systems is important because defects can damage equipment, endanger people, harm on-site loads, and reduce generation and revenue.
Fire Safety Tips for Residential Distributed PV Systems
2023-01-23
Keep flammable and explosive materials away from distributed PV systems. Use self-monitoring, arc and fire detection, firebreaks every 40 m, and an emergency DC disconnect switch.
Do PV Systems Pose Electromagnetic Radiation Risks?
2023-01-23
PV systems convert sunlight into electricity with no pollution and no radiation. Inverters and distribution cabinets pass EMC tests, so they are harmless to humans.
How Temperature and Ventilation Affect Solar Panel Output
2023-01-23
Solar cell output decreases as temperature rises. Ventilation and heat dissipation improve power generation efficiency, with natural wind the most common method.
How to Deal with Snow and Ice on PV Modules in Winter
2023-01-23
Heavy snow on PV modules should be removed with a tool, without scratching the glass. Never stand on modules to clean them, as this causes micro-cracks and shortens lifespan.
Should You Disconnect PV Systems During Thunderstorms?
2023-01-23
Distributed PV systems have built-in lightning protection, so no disconnection is needed. For extra safety, open the combiner box breaker and check lightning protection regularly.
Should Damaged Components Be Replaced Immediately in Hot Sun?
2023-01-23
Do not replace components immediately in hot sun; do it in the early morning or late afternoon instead. Contact the plant O&M staff, and let professionals perform the replacement.
Can Wire Mesh Be Installed Over a PV Array for Protection?
2023-01-23
Wire mesh is not recommended: it shadows modules, causing hot-spot effects that cut efficiency. Qualified modules already pass hail impact tests, so mesh is unnecessary.
Do Shadows and Bird Droppings on PV Modules Affect Output?
2023-01-23
Yes. Shading causes hot-spot effects that can damage solar cells. Bypass diodes prevent hot spots in series strings, and DC fuses on each string protect parallel circuits.
If power output drops noticeably, the system may be faulty. Monitor combiner box data for anomalies, then use clamp meters and thermal cameras to locate the defective module.
How to Safely Clean PV Modules Without Electric Shock Risk
2023-01-23
Clean PV modules in the early morning or late afternoon to avoid electric shock. Use a soft brush and clean water with moderate pressure to protect the glass.
Follow the supplier manual for parts inspection. Wipe modules monthly in dry seasons and more often in dusty areas, and clear snow and shading promptly.
Choose reputable manufacturers with good after-sales service. Quality products lower failure rates, and following the manual with regular inspection and cleaning cuts costs.
How to Handle Common Faults in Residential PV Systems
2023-01-23
If problems occur within the warranty period, call the installer or O&M provider to explain the issue. They will troubleshoot by phone and dispatch technicians on site if needed.
Common Faults and Typical Problems in Residential PV Systems
2023-01-23
Common faults include inverters failing to start due to low voltage, low generation from modules or inverters, burnt junction boxes, and locally burnt modules.
What Is a Bidirectional Meter and Why Is It Needed?
2023-01-23
A bidirectional meter reads both consumption and generation. It is needed because surplus PV power is exported to the grid and grid power covers shortfalls.
How to Protect Building-Integrated PV Systems from Lightning
2023-01-23
Lightning hazards include direct strikes and induced surges. Grounded rods handle direct strikes; surge protection modules in combiner boxes and inverters handle induced surges.
PV modules generate electricity in sunlight, so power cannot be switched off. Installers should follow the manual, use IP65 connectors and breakers, and guard against leakage.
Who Inspects a Completed PV System and What Is Checked?
2023-01-23
Acceptance is organized by the grid company, focusing on grid-connection performance, construction quality, module and inverter certification, lightning grounding, and fire safety.
What Information Must Customers Provide for PV System Design?
2023-01-23
For PV design, required data: installation site, surroundings, building year, roof type and load, grid voltage, roof photos. Optional: power use, roof structure, CAD drawings.
Where Are PV Monitoring Devices Installed? Do They Take Up Indoor Space?
2023-01-23
Distributed grid-connected PV monitoring covers large plants, commercial and residential rooftop PV. It installs outdoors, using no indoor space, and reports operating data.
Does PV Installation Need Separate Wiring on Existing Buildings?
2023-01-23
PV system wiring has DC and AC parts, which must be wired separately. The AC part connects to the grid at the meter position, linking with the home electrical system.
Can Daytime PV Power Be Stored for Night Lighting?
2023-01-23
Yes, add a controller and batteries to store daytime PV power for night lighting. Without storage, the system stops on grid failure; a microgrid hybrid inverter keeps it running.
Will Distributed PV Integration Affect Power Quality?
2023-01-23
Power quality is the quality of electricity in a power system. The PV inverter is certified and factory-tested for power quality, so distributed PV does not affect it.
PV output is barely affected by temperature; key factors are irradiation and sunshine hours. Winter output is lower, but grid-connected systems power homes when the grid is on.
On rainy or hazy days, modules still generate in weak light, but below inverter startup voltage the system stops. Running parallel with grid, power shortfalls are covered.
How to Tell If You Are Using Grid Power or Your Own Solar Power?
2023-01-23
After installation, the grid company installs two meters: one for PV generation, the other for power fed into the grid. If the PV meter is running, you are using solar power.
How to Estimate Distributed PV System Power Generation?
2023-01-23
To estimate PV generation you need effective sunshine hours, system efficiency and installed capacity. A 1000W Beijing system at 80% efficiency generates about 3.2 kWh per day.
How to Determine Home PV System Installed Capacity?
2023-01-23
Home PV capacity depends on appliance loads, roof type and area, plus grid company approval. Typical: about 70Wp/sq.m for concrete roofs and 100Wp/sq.m for steel roofs.
Designing PV Arrays for Wind Speed and Building Load
2023-01-23
PV arrays on rooftops must consider roof load and airflow turbulence and acceleration effects. Wind, terrain and building position relative to surroundings all affect safety.
Choosing PV Module Color, Transparency, Size and Shape for Buildings
2023-01-23
Choose modules matching building color. For transparency, meet indoor daylight needs to avoid secondary lighting, and balance module size and shape through professional design.
Choose the inverter per system requirements. Its power should match the solar array maximum power, with rated output close to total input power to save cost.
Choose modules per site: area decides size, high-efficiency modules for more capacity, frame color and connector length. Choose certified modules from reputable brands.
How to Set PV Array Orientation and Its Effect on Output?
2023-01-23
Face modules toward most sunlight, as daily irradiation determines PV output. Angle also affects efficiency; assuming optimum angle is 100%, output varies with azimuth and angle.
What Determines the PV Array Installation Tilt Angle?
2023-01-23
PV array tilt angle depends mainly on longitude, latitude and optimum irradiation. Adjust the angle if site conditions prevent the optimum; table lists optimum angles for cities.
Solar irradiation and sunshine hours across China are shown below. For more details, contact local meteorological stations, the CMA Public Meteorological Service Center, or NASA.
What Components Make Up a Distributed PV Grid-Connected System
2023-01-23
A distributed PV grid-connected system mainly consists of PV modules, inverters, racks, cables, combiner boxes, AC/DC cabinets, and monitoring systems, some optional.
How Are Residential Distributed PV Systems Defined and Subsidized
2023-01-23
Residential distributed PV projects are capped at 30 kW. Self-consumed power offsets grid use; surplus fed to the grid is bought at the local coal benchmark price.
A filed project generally cannot be changed at will. If special circumstances require a plan change, you must re-apply through the original application procedure.
How to File a Distributed PV Project and What Materials Are Needed
2023-01-23
Filing a distributed PV project requires the filing forms, project plan, site use proof, grid access opinion, EMC contract if applicable, and other local materials.
Why Must Distributed PV Projects Be Filed? Can Unsubsidized Ones Start
2023-01-23
Distributed PV relies on national subsidies, so projects must be filed to optimize subsidy allocation. Unsubsidized projects can start construction after filing.
State Council energy authority guides national distributed PV planning; local authorities manage regional construction; a national solar institution handles quality control.
Turnkey projects cover design, procurement, and construction, handed over ready for operation. Distributed PV users get full service from site survey to grid connection.
How to Get Property Management and Neighbor Approval for Rooftop PV
2023-01-23
Rooftop PV needs neighbor, property management, owner committee, and neighborhood committee consent. Systems stop on grid outage and must have anti-islanding protection.
What Should Be Considered for Distributed PV Grid Connection
2023-01-23
Plan for system safety, PV configuration, metering, and settlement: connection point switches, equipment safety, anti-islanding devices, tariffs, and subsidy procedures.
Do You Pay for PV Grid Connection? Documents Needed for Individuals and Firms
2023-01-23
Grid companies charge no service fees for grid connection. Individuals need ID, household registration, and property certificates; enterprises need licenses and approvals.
What to Do With Excess Power? How Is Surplus PV Electricity Settled
2023-01-23
After signing a feed-in agreement, the grid company meters surplus electricity and pays the project owner promptly at the state-set price according to the settlement cycle.
How to Apply for Distributed PV System Grid Connection
2023-01-23
Apply at the grid company customer service center. After confirming the access plan, the grid company installs metering, signs contracts, and completes grid connection acceptance.
Wuxi leads the province in distributed PV: 157 grid access applications totaling 110 MW since 2012, plus a 50 MW demonstration project in Wuxi High-tech Zone.
Wuxi has a humid monsoon climate. Annual average daily irradiation is 3.51 kWh/m2 per day, peaking at 4.99 in July; annual average temperature is about 16.61°C.
How Are Distributed PV Subsidies Paid to Project Owners
2023-01-23
The grid enterprise meters all PV generation, which qualifies for the national per-kWh subsidy, and transfers subsidy funds to owners each settlement cycle.
How Do Users Obtain National Electricity Subsidies?
2023-01-23
Grid companies guide distributed PV grid-connection, sign power purchase contracts, meter total and on-grid generation, and transfer national generation subsidies monthly.
Which Departments Should You Consult for Distributed PV Policies?
2023-01-23
Consult municipal or county-level energy departments for distributed PV policies; they offer one-stop filing, acceptance, grid-connection and subsidy settlement services.
Are Distributed PV Subsidies the Same for All Sectors?
2023-01-23
Distributed PV projects receive a fixed per-kWh subsidy, so returns vary with local electricity prices, from RMB 0.3/kWh for residential use to 1.4/kWh for commercial use.
Do Self-Consumed and Surplus-On-Grid Power Receive the Same Subsidy?
2023-01-23
Under current national policy, distributed PV projects get a fixed per-kWh subsidy on all generation, so self-consumed and surplus on-grid power are paid at the same rate.
The generation-based subsidy pays PV power per kWh generated. Self-consumed power gets a state subsidy; surplus on-grid power earns the desulfurization price plus per-kWh subsidy.
The feed-in tariff prices PV power at generation cost plus profit, with the grid buying all output. It covers large plants and distributed PV, with clear pros and cons.
What Does Self-Consumption with Surplus On-Grid Mean?
2023-01-23
Self-consumption with surplus on-grid is a distributed PV model: self-used power earns the retail price, while surplus power is sold to the grid at the feed-in tariff.
Can Distributed PV Systems Be Installed on Greenhouses and Ponds?
2023-01-23
PV agricultural greenhouses block excess heat, keep warmth at night and power LED lighting; surplus power can go to the grid. PV arrays on fish ponds add shade for fish.
What Is the Difference Between Facade and Rooftop PV Installation?
2023-01-23
PV can go on rooftops (horizontal, sloped or skylight) or facades (curtain walls). Rooftop arrays give higher output and lower cost; facades trade efficiency for aesthetics.
What Is a Building-Integrated Distributed PV System?
2023-01-23
Grid-connected building PV comes in two types: BIPV modules replace building materials, while BAPV adds ordinary modules to existing buildings, in eight common integration forms.
Distributed PV applies to two scenarios: building-integrated systems in grid-covered or load-concentrated areas, and off-grid systems or micro-grids for remote no-power areas.
Distributed PV comes in three forms: grid-connected self-consumption systems, off-grid systems for remote and island areas, and multi-energy micro-grids (hydro/PV/wind/storage).
How Much Solar Energy Can We Use? Can It Power the Future?
2023-01-23
Solar radiation reaching Earth exceeds global energy demand 10,000-fold. PV on 4% of world deserts could cover all demand, and falling costs make it a future dominant energy.
Do PV Module Production Processes Generate Lots of Pollutants?
2023-01-23
PV module pollution concerns center on polysilicon by-products. The improved Siemens process recycles silicon tetrachloride and tail gas, meeting environmental standards.