Complaint
| Model | 18650MN2000(5C) | |
| Chemistry | NMC | |
| Nominal Capacity | 2000 mAh | |
| Minimum Capacity | 1950 mAh | |
| Nominal Voltage | 3.7V | |
| Energy | 7.40 WH | |
| Internal Resistance | ≤20 mQ | |
| Dimensions | φ18.0x65.0 mm | |
| Weight | ≤46 g | |
| Charging | Method | Constant Current Constant Voltage |
| Voltage | 4.20 ±0.05V | |
| Standard Current | 400 mA | |
| Fast Charging | 2000 mA | |
| Discharging | Cut-off Voltage | 2.75V±0.05V |
| Standard Current | 400 mA | |
| Maximum Continuous Current | 6000 mA | |
| Operating Temperature | charging | 0ºC~45ºC |
| Discharging | 20ºC~60ºC | |
| Cycle Life (cycles) | 300 | |
| Self-discharge Rate (monthly) | ≤3% | |
| Items | Inspecting Method | Standard | |
Nominal capacity | The charger provides 0.5I1 (A) constant current until the battery voltage reaches 4.20V at (25±2ºC), then charges at 4.20V constant voltage, and gradually reduces the charging current to less than or equal to 0.01I1 (A). Take a 10-minute break. Then the discharge capacity of the battery is measured during the supply of 0.5I1 (A) current until the voltage drops to 2.75V. (25±2ºC) , 0.5I1(A) 4.20V , 0.01I1(A) , 10 , 0.5I1(A) 2.75V , ( mAh ) . | ≥ 1950 | |
Initial capacity | Charge according at (25±2ºC) discharge according to 6.2, the cycle should be 5 times. When the capacity gap of three times in succession are less than 3% nominal capacity, the test terminates. Calculate the average of last three experimental results. | Capacity gap for three times <3% 3 <3% | |
| Discharge Rate | Charge according at 25±2ºC, rest for 10 minutes. Then the battery discharge with vary current to the end, measuring the discharge capacity percentage. 25±2ºC ,10min ,, (/) . | 1C | 100% |
| 3C | 97% | ||
| 5C | 95% | ||
Charge Rate | At 25±2ºC, discharge with a constant current of 0.5I1(A) to the cut-off voltage, rest for 1 hour, then charge with constant current of 2I1(A) to the end voltage, rest for 1 hour. Last, discharge with constant current of 0.5I1(A) to the cut-off voltage and calculate the discharge capacity. 25±2ºC, 0.5I1(A) , 1H , 2I1(A), 1H , 0.5I1(A), . | ≥80% initial capacity ≥80% | |
| Temperature ºC | Time Increment min | Cumulative Time min | Temperature Rate ºC/min |
| 25 | 0 | 0 | 0 |
| -40 | 60 | 60 | 13/ 12 |
| -40 | 90 | 150 | 0 |
| 25 | 60 | 210 | 13/12 |
| 85 | 90 | 300 | 2/3 |
| 85 | 110 | 410 | 0 |
| 25 | 70 | 480 | 6/7 |
| Standard Charge method | Constant Current Constant Voltage(CC/CV) |
| Constant Current:1000mA | |
| Max. Charge voltage:4.2V | |
| Cut-off Current :20mA | |
| Standard Discharge | Constant Current Discharge (DC) |
| Constant Current:1000mA | |
| Cut-off Voltage:2.75V |
Zenith Star (Tianjin) Electronic Technology Co., Ltd was established in September 2017 and is headquartered in Tianjin, China. It is a new energy battery technology enterprise focused on technology promotion, application services, and product sales. We are committed to building a comprehensive service platform for new energy applications and becoming a problem solver and solution provider in the new energy industry. The core R&D team members of the company have many years of experience in the new energy industry and can provide customized solutions based on customers' actual needs in the fields of new energy batteries and new energy vehicles.
Our factory (Tianjin Shenli) is located in Tiankai Pioneer Park, 33 Huishen Road, Xiqing District, Tianjin. Our factory has a number of professional talents such as national electric vehicle 863 project experts, new energy vehicle professional power battery lecturers, senior engineers, structural engineers, circuit engineers, software engineers, and new energy maintenance technicians, among others.
Our company has always adhered to the business philosophy of "truth-seeking, pragmatic, efficient, and innovative," and is committed to providing customers with the best quality products and the most attentive services. We aim to provide shareholders with an ideal platform for maintaining and increasing the value of investment and to offer employees a warm home for sharing entrepreneurial achievements.
Our company offers a variety of products that can meet your multifarious demands. Since the establishment of the company, we have adhered to the management principles of "quality first, customer first, and credit-based" and always do our best to satisfy the potential needs of our customers. We sincerely wish to cooperate with enterprises from all over the world to achieve a win-win situation, as the trend of economic globalization has developed with enterprises from all over the world to achieve a win-win situation,as the trend of economic globalization has developed with an irresistible force.
| 1. Q: Do you offer international shipping for your batteries? |
| A: Yes, we provide international shipping services for our batteries. |
| 2. Q: What are the shipping costs for international orders? |
| A: Shipping costs for international orders may vary based on the destination and order quantity. Please contact our sales team for specific details. |
| 3.Q:Where is the address of your company? |
| A:Tianjin, China, has convenient sea, land, and air transportation channels and is an important transportation hub in northern China. |
| 4. Q: What is the estimated delivery time for international orders? |
| A: The estimated delivery time for international orders depends on the destination and shipping method. Our sales team can provide you with an accurate delivery timeframe. |
| 5. Q: Are there any import taxes or customs duties that I need to pay for international orders? |
| A: Import taxes and customs duties may apply to international orders. Customers are responsible for any applicable taxes or duties imposed by their country's customs regulations. |
| 6. Q: Do you offer product warranties for international customers? |
| A: Yes, we offer product warranties for international customers. The general warranty is 1 year, which is based on the actual situation of the order. |
| 7. Q: Can you provide product certifications required for importation in my country? |
| A: Yes, we can provide necessary product certifications to facilitate the importation process. Please inform our sales team of any specific requirements. |
| 8. Q: Do you accept international payment methods? |
| A: Yes, we accept various international payment methods, including credit cards and bank transfers. |
| 9. Q: Can I track my international order during transit? |
| A: Yes, we will request the carrier to provide tracking information for international orders so that customers can monitor the shipment's progress. |
| 10. Q: How can I contact your customer support team for international inquiries? |
| A: You can contact our customer support team via email or phone, and they will be happy to assist you with any international inquiries. |
| 11.Q:Are you a factory? |
| A: We are a foreign trade company that operates a production factory for new energy battery products. |
| 12.Q:Can you send some test samples before placing an order? |
| A:Yes, you can contact our service specialist to discuss the matter of sending samples. |
