SUNKING Energy is a professional lithium battery manufacturer and solution provider focused on OEM and industrial applications.
We help global customers power their products with reliable, application-driven lithium battery solutions designed for real-world use.
Our team combines engineering expertise with manufacturing capability to deliver batteries that meet specific technical, safety, and performance requirements.
With 15 years in customized polymer and cylindrical batteries, we deliver tailored solutions for diverse industries and demanding applications.
From prototyping to volume production, our integrated processes support fast iteration, controlled quality, and smooth scale-up of custom battery solutions.
We ensure consistent quality through strict supplier control, material inspection, and standardized production.
Each battery pack is tested before shipment to reduce risk and ensure stable real-world performance.
Submit your requirements including application, specifications, quantity, and target timeline. Our team reviews the initial technical and commercial details.
Our engineers evaluate feasibility, select suitable cells and configurations, and provide a detailed quotation with technical recommendations.
A prototype or sample pack is developed for testing and validation to ensure performance, safety, and compatibility with your device.
Final specifications, pricing, and delivery terms are confirmed after sample approval. Production parameters are locked in.
We proceed with mass production under strict quality control, followed by testing, packaging, and on-time delivery.
We collect customer usage feedback and performance data to support continuous optimization, future iterations, and long-term product reliability.
All products are manufactured and supplied by Sunking Energy Technology Co., Ltd., ensuring product quality, regulatory compliance, and reliable international delivery.
Certifications such as UL, CE, RoHS, UN38.3, and MSDS are available upon customer request, depending on specific project requirements.
We have delivered customized lithium battery solutions for customers and brands such as:
Yes. We are Shenzhen SunKing Energy Technology Co., Ltd., founded in 2011 (Unified Social Credit Code: 9144030057002758X6).
sunkingbattery.com is our only official website. Headquartered in Huizhou, China, we operate multiple factories nationwide and serve long-term global customers. Official social media accounts are linked in the website header and footer.
We provide fully assembled lithium battery packs, including Li-Po battery packs, cylindrical battery packs (such as 18650), and multi-cell battery solutions.
All battery packs use only A-grade cells with guaranteed capacity. We never use recycled or substandard cells, ensuring stable performance and long-term reliability.
Not sure which battery fits your product? Share your application, voltage, capacity, or size, and our engineers will recommend the best solution.
Yes. We offer full customization services, including battery dimensions, capacity, voltage configuration, BMS design, wire leads, connectors, and casing materials to meet your project requirements.
Please provide your application scenario, size limitations, required capacity and voltage, discharge rate, operating environment, and any mandatory certifications. This information helps us design the optimal lithium battery solution.
Since most lithium battery packs are custom-built, MOQ depends on your technical specifications and design complexity. Contact us to receive a clear MOQ based on your specific project.
Sample lead time is typically around 5 working days. Mass production lead time ranges from 10 to 25 working days, excluding shipping.
Lead time may vary depending on material availability, but our stable supply chain ensures consistent and reliable delivery.
Yes. All battery packs include basic BMS protection such as overcharge, over-discharge, overcurrent, and short-circuit protection.
Optional features including temperature sensors and advanced protection functions can be added based on application needs.
We support certifications including UN38.3, MSDS, CE, RoHS, and others depending on your target market and application requirements.
Certified battery packs can be supplied directly, or we can assist with custom certification processes for your project.
We implement strict IQC, IPQC, and OQC quality control processes and perform 100% capacity and safety testing before shipment to ensure consistent quality.
Our standard warranty period is 12 months. Extended warranty terms are available for long-term cooperation partners and large-volume projects.
We support air freight, sea freight, rail transport, and express delivery, depending on destination, regulations, and lithium battery transport requirements.
Yes, samples are available for testing and evaluation. Shipping costs are borne by the customer. Sample fees may apply for high-value or fully customized battery packs and are handled flexibly based on the project.
We provide technical guidance, troubleshooting support, and long-term after-sales service to ensure stable battery performance throughout the product lifecycle.
