Product Name: Customized 18650 4000mAh 1s2p 3.7V Lithium Ion Battery Pack with PCM Wires Connector High Quality with RoHS Ce UL-1643 Un38.3 for Power Bank Solar Energy Sensor Model NO.: MC-18650-3.7-4000-03 Electrolyte: Li-ion Usage: Solar Lamp Electronic Digital Products Standard Voltage: 3.7V Rated Capacity: 4000mAh Accessories Type: Battery Size: Small Discharge Rate: Medium Discharge Rate Rechargeable: Chargeable Connection Mode: Series and Parallel Type: Lithium-Ion Battery Pack Weight: 96g Cycle Life: >500 Cycles Max Discharge Current: 1c(4000mAh) Brand: OEM/ODM Configuration: 1s2p Trademark: MICA Transport Package: Carton Specification: 70*19*39mm(H*W*L) Origin: China HS Code: 8507600090 Product Description Type18650Configuration1S2PBrandOEM/ODMNominal Voltage3.7VNominal capacity4000mAhMax Cut-off discharge Voltage2.8VMax Charge Voltage4.2VMax discharge current1C(4000mAh)Operation TemperatureCharge:0ºC-45ºCDischarge:-20ºC-60ºCWeight96gDimension70*19*39mm(H*W*L)Cycle life>500 cyclesApplicationelectronic digital productsMeeting Quality StandardsOur company has passed ISO 9001:2015 quality and BSCI system approval and our products have got the ROHS, CE, UL, IEC, UN38.3 certifications. The battery products have the advantages of high energy density, high power density, small volume, light weight, long service life, low self-discharge, flexible and varied shapes, safety performance and so on.Benefit From Our AdvantagesBacked by professional supporting team, we have expertise in R&D, OEM production and marketing. With the support of a professional and dedicated engineering and operation team, we are available to bringing customers' idea into reality. Flexible to customized request, such as sound adjusted, color, package, and accessories adjusted, so you can enjoy our quick one-stop OEM service.FAQQ1: Can we get samples for test?A: Yes, we can supply samples, and buyer pay for sample cost and shipping cost.Q2: What is the MOQ ?A: 1pc for sample verification is available. More quantity has better price.Q3: Can you accept OEM and ODM Service?A: Yes, it's available.Q4. What about the lead time?A:Sample needs ~2wks , mass production time needs 3wks-4wks.Q5: How do I track my shipment?After we deliver your goods, we will send you the tracking NO. once your goods has been shipped.