product model: XL 2000mAh 3.7V Single battery model: 524041 Battery voltage range after combination: 3.0V~4.2V Battery pack power: 7.4Wh Battery pack size:5.2*40.5*44mm Charge and discharge times: >500 times Brand: Xuan Li Internal resistance: customizable Net weight: customizable Package: customizable Colour: silver grey Shelf life: 1 year Storage temperature: 25℃ Charging time: 7.5h Charging voltage: 4.2V Charging current: 0.12A Whether to charge: Yes Standard capacity:2000mah Nominal capacity 2000mah Factory voltage: 3.7-3.9V Customization: Yes Cell standard: IEC62133-2:217 Load voltage: 3.0-4.2V Rechargeable or not: Rechargeablemarket demand——raise product design proposal——preliminary assessment——issuing the trial produce ordering——products quality tracking——pilot plant test report——pilot plant test final report——pilot plant review report——concluding reportXUANLI advantages: 1.With more than 12years' experience and more than 600 skilled staff serve you. 2.Factory ISO9001:2015 approved and most products comply with UL,CB,KC standards. 3.Wide range of production line covers Li-polymer battery,Lithium ion battery, and battery pack for your various demand.   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   Main export markets: Asia;Australasia;Central/South America;Eastern Europe;Mid East/Africa;North America;Western Europe   Main selling point: Country of origin;Experienced staff;Green product;Quality approvals   Shipping Information: FOB Port: Shenzhen Lead Time: 7 - 25 days   Payment Details: Payment Method: T/T   Primary 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