3.7V polymer lithium battery · Comply with relevant national standards and requirements for batteries · All finished battery products have been calibrated and tested before leaving the factory. They can be used directlyQ1. Can I have a sample order for Battery? A: Yes, we welcome sample order to test and check quality. Q2. What about the lead time? A:Sample needs 5-10 days, mass production time needs 25-30 days. Q3. Do you have any MOQ limit for Battery? A: Low MOQ, 1pc for sample checking is available Q4. How do you ship the goods and how long does it take to arrive? A: We usually ship by UPS, TNT... It usually takes 3-5 days to arrive. Airline and sea shipping also optional. Q5. How to proceed an order for Battery? A: Firstly let us know your requirements or application.Secondly We quote according to your requirements or our suggestions.Thirdly customer confirms the samples and places deposit for formal order.Fourthly We arrange the production. Q6. Is it OK to print my logo on Battery? A: Yes. Please inform us formally before our production and confirm the design firstly based on our sample. Q7: Do you offer guarantee for the products? A: Yes, we offer 1-2 years warranty to our products. Q8: How to deal with the faulty? A: Firstly, Our products are produced in strict quality control system and the defective rate will be less than 0.2%. Secondly, during the guarantee period, we will send new batteries with new order for small quantity. For defective batch products, we will repair them and resend them to you or we can discuss the solution including re-call according to real situation. 