sales@coolienergy.com 
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Energy Storage Knowledge Hub & Technical Resources – Coolienergy
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Frequently Asked Questions
Energy Storage Knowledge Hub & Technical Resources
Yes, we offer comprehensive after-sales service for international customers.
Our services include:
Technical Support: Remote assistance via email, video call, or phone.
Spare Parts: We provide spare parts required for maintenance and repairs, and in some regions (Europe and Southeast Asia), we have local branches for convenient access.
Warranty: All our products come with a 2-10 year warranty against manufacturing defects. This warranty is valid worldwide.
On-site Support: In some cases, we may arrange for a local service provider or technician to assist with installation, troubleshooting, or maintenance.
For standard orders, our standard sample production lead time is typically 1 to 2 weeks. Custom orders or large quantities may take 3 to 5 weeks. After receiving order details and confirmation, we will provide a more accurate delivery time based on production schedules and custom requirements.
Yes, we offer expedited production and shipping services for urgent orders. Please contact us directly with your request, and we will assess whether we can accommodate your timeline. Expedited services may incur additional charges depending on the urgency of your order and the specific needs.
Our standard shipping terms are FOB (Free on Board) at the port of production, meaning the buyer is responsible for shipping costs from our factory to the port of destination. Additional costs such as customs, duties, and insurance are the buyer’s responsibility, unless otherwise agreed.
Upon request, we also offer CIF (Cost, Insurance, and Freight) terms, where we cover transportation and insurance until the goods arrive at the port of destination.
Our standard payment terms are a 30% deposit upon order confirmation, with the remaining 70% due before shipment. We accept payments by bank transfer and letter of credit. For large or custom orders, we may require a higher deposit.
Once your order has shipped, we’ll provide you with a tracking number and the carrier’s contact information. You can use the tracking number to monitor the progress of your shipment online. We’ll also keep you updated on the status of your order, including any delays or issues that may arise during shipping.
If the product arrives damaged or defective, please contact us immediately. We will arrange a replacement or repair under the warranty. For damaged goods, we may request photos of the damage and shipping documents. In the case of a defect, we may request a diagnostic report or photos to assess the issue.
Custom products are generally not accepted for returns or exchanges unless they are defective or damaged during shipping. For standard products, returns are accepted within 30 days of receipt as long as the product is in new, unused condition and original packaging. Return shipping costs are the buyer’s responsibility unless the product is defective.
Yes, we offer samples for most of our products. You can order samples to evaluate the product’s quality, performance, and suitability for your needs. Please contact us for sample availability, pricing, and shipping details.
Yes, we can provide the necessary documentation, such as product certifications, invoices, packing lists, and certificates of origin, to facilitate customs clearance and comply with your country’s regulations.
In addition to the product and shipping costs, international orders may incur additional fees such as:
Customs Duties and Taxes: Depending on the destination country’s import regulations.
Insurance: Optional insurance to cover the goods in transit.
Handling Fees: Fees for packaging and special handling, if applicable.
We recommend checking with your local customs office to understand any additional fees or taxes that may apply.
You can reach our support team via email, phone, or through instant chating tools (wechat, whatsapp). For urgent inquiries, please contact us directly via phone for a quicker response.
To schedule a factory visit, please contact our project developer. We recommend scheduling the visit at least two weeks in advance to allow us to arrange the necessary resources and ensure that the relevant personnel are available during your visit.
BESS
An LFP (Lithium Iron Phosphate) Battery Energy Storage System (BESS) is a type of energy storage solution that uses lithium iron phosphate as the cathode material in rechargeable batteries. These systems are used for storing electrical energy, optimizing renewable energy use, providing backup power, and enhancing energy security in residential, commercial, and industrial applications.
We manufacture a wide range of LFP BESS tailored for various applications, including:
Residential Systems: Compact solutions for storing solar energy and providing backup power.
Commercial Systems: Medium to large-scale storage systems for businesses, reducing energy costs and enhancing reliability.
Utility-Scale Systems: Large, scalable BESS solutions designed for grid support, renewable energy integration, and load balancing.
Safety: LFP batteries are one of the safest lithium-ion technologies, with lower risks of thermal runaway, fire, or explosion.
Long Lifespan: LFP batteries provide between 3,000 and 5,000 charge cycles, significantly outlasting other types of batteries.
Cost Efficiency: Compared to other lithium-ion chemistries, LFP batteries are more affordable while maintaining high performance.
Environmental Impact: LFP batteries contain no cobalt or nickel, making them more environmentally friendly and ethical to manufacture.
Yes, we offer customizable LFP Battery Energy Storage Systems. We work with clients to design solutions that meet specific requirements, such as:
Storage capacity (kWh)
Backup duration
Integration with renewable energy sources (solar, wind)
Load management and smart grid capabilities
Specialized enclosures for outdoor or harsh environments
LFP batteries have an impressive lifespan of 10 to 15 years, with up to 6,000 charge cycles, depending on usage patterns and maintenance. Their extended service life reduces the need for frequent replacements, making them a cost-effective solution in the long run.
We offer warranties on our LFP Battery Energy Storage Systems that range from 2 to 10 years, depending on the system size and specific customer requirements. The warranty covers performance degradation, battery faults, and defects in manufacturing, ensuring peace of mind for our clients.
Our LFP BESS solutions come with detailed installation guides and can be installed by certified technicians. We also provide professional installation supervision services for commercial and industrial clients. It generally includes:
Site assessment and system sizing support
Battery and inverter placement support
Electrical connections and system integration support
Commissioning and testing
We adhere to international quality standards and certifications (e.g., ISO, CE, UL) to ensure that all our products meet rigorous performance, safety, and reliability requirements. Our LFP BESS are equipped with:
Built-in safety features such as overcharge protection, temperature control, and short-circuit protection.
Advanced battery management systems (BMS) for real-time monitoring and performance optimization.
Compliance with industry standards for electrical safety and environmental performance.
We provide comprehensive after-sales support, including:
Technical support: Assistance with installation, operation, and troubleshooting.
Maintenance: Regular maintenance schedules to ensure the system operates efficiently over its lifespan.
Upgrades: Availability of firmware or software updates to enhance system performance.
Spare parts: Easy access to replacement parts and batteries for long-term service.
Our LFP Battery Energy Storage Systems meet industry-leading certifications, including:
UL 1973: Safety for batteries in stationary applications.
IEC 62133: International safety standard for batteries.
CE: Compliance with European Union safety, health, and environmental requirements.
ISO 9001: Quality management systems.
The Grid Connection Certification for battery inverters is a crucial process that ensures the inverter meets the technical standards required to operate safely and efficiently when connected to the electric grid.
The requirements for grid connection certification vary by region and country. Our products have the certifications for most of the countries in the world, plesae consult with our project developer for more details.
The cost of an LFP BESS depends on the storage capacity (kWh), the application (residential, commercial, or utility-scale), and any customization or additional features required. We offer flexible pricing options, including bulk orders and long-term contracts, to accommodate different budget sizes. Please contact us for a detailed quote based on your specific needs.
The installation time for LFP BESS can vary depending on the system size and complexity. For residential systems, installation can usually be completed within 1 to 2 days. For larger commercial or utility-scale systems, installation may take several weeks, including site assessments, electrical work, and system integration.
Yes, LFP BESS is ideal for off-grid applications. These systems can store energy generated from solar and provide power during periods when the renewable generation is insufficient. Off-grid applications often include remote homes, agricultural operations, and emergency power systems.
LFP BESS requires minimal maintenance, but regular checks should be made to ensure:
Proper battery voltage levels and system status.
Cleanliness and ventilation of battery enclosures.
Firmware and software updates for optimal performance.
Battery cycle monitoring to optimize the lifespan of the system.
Powering The Future
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Here we offer you up-to-date information on new energy, encompassing enterprise installation of lithium batteries, industry updates on lithium battery sector, and expert knowledge pertaining to LiFePO4 Batteries.
