Q1: Can I have samples to test? And what is lead time for sample order?A1: Yes, we can supply samples, the lead time for samples is 7-10 days. And buyers pay for sample cost and shipping cost.Q2: Do you provide after-sales serive?A2: Yes, the warranty is usually 3 years, if any quality problems on our side in this period, we can send new one as replacement.Q3 What is your company's advantage?A3: We only supply high level quality of lithium battery and we gurantee on-time shipment, we also provide excellent after sales service.Q4: Do you accept OEM/ODM?A4: Yes, it is avaliable.Q5: What information do you need to make a customized battery pack?A5: We need the details below: 1. Size of the battery pack you need in mm. 2. Capacity of the Battery pack. 3. Voltage of the battery pack. 4. Max discharge current. 5. Cable and connector types you need. 6. Casing and Terminals if required. 7. Any protection circuits you may need.Q6: Are you battery real capacity?A6: All of our battery cells with Grade A, 100% new and real capacity.Q7: Are you a factory or a trading companyA7: We are a professional rechargeable lithium-ion battery and LifePO4 battery manufacturer, welcome to visit.Q8: What kind of certificates do you have?A8: We can provide CE, ROHS, FCC, IEC62133, MSDS, UN38.3 & etc. if your need.Q9: What is your lead time for the mass production?A9: General speaking, about 25-30 days depending on different items after getting down payment and confirmation about the samples.