Key Specifications/Special Features: Product model:5100mAh 7.4V Single battery model:628190 Single battery voltage:3.7V Single battery capacity:5100mAh Battery voltage range after combination:6.0-8.4V Battery pack power:37.74wh Battery pack size:6.2*162.5*93mm Charge and discharge times:＞500times Rechargeable or not: Rechargeable Customization:Yes Product details： 1.Sufficient capacity:using domestic and foreign brand raw materials,sufficient capacity,low internal resistance, and stable voltage. 2.Stable performance: long cycle life,high energy density,wide operating temperature range,stable discharge voltage.market demand——raise product design proposal——preliminary assessment——issuing the trial produce odering——products quality tracking——pilot plant test report——pilot plant test final report——pilot plant review report——concluding reportPrimary Competitive Advantages: Product Features;Prompt Delivery;Quality Approvals;Reputation;Service;Small Orders accepted; Origin;Distributorships offered;Experienced staff;Product Performance; Green Product;Guarantee/Warranty;International approvals; Military specifications;Packaging;Price XUANLI Advantages: 1.Technology-With more than 20 years of battery manufacturing and automatic production line,XUANLI can guarantee our products better products. 2.R&D-Experienced R&D team with over 20 engineers for supporting ODM requirements. 3.Safety-Various tests are done at XUANLI to ensure the safety of our products for our customers. 4.Certificates-ISO、UL、CB、KC certificated. 5.Service-XUANLI has a professional sales team to provide professional project solutions and after-sale services.   Company overview: XUANLI electronic Co.,Ltd is an experienced manufacturer of batteries specialized in smart battery packs,18650 lithium batteries,polymer lithium batteries,lithium iron phosphate batteries,power batteries,battery chargers and various special batteries. We welcome OEM and ODM orders and we sincerely hope to work with you hand in hand to create a prosperoous future. We have experienced staff,reasonable price,product performance,quality approvals and small orders accepted.