{"product_id":"ultrafire-18650-2400-ptd","title":"Ultrafire 18650 2500mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Bulk (ULTRAFIRE-18650-2500-PTD)","description":"\u003ch2\u003eUltrafire 18650 Protected Rechargeable Lithium Battery\u003c\/h2\u003e\u003ch4\u003eDetailed Description:\u003c\/h4\u003e\u003cp\u003eProtected 18650 2500 mAh rechargeable 3.7 volt battery - charge with the Ultrafire Multi-Battery charger.\u003c\/p\u003e\u003cp\u003eThe advantage of this cell is that it features a button top making it particularly compatible with many flashlight applications.\u003c\/p\u003e\u003cp\u003eRechargeable Lithium batteries are rapidly becoming a very economical way to lower the operating costs of Lithium-Powered flashlights. We offer a number of different options in order to meet any rechargeable needs. These are Protected batteries.\u003c\/p\u003e\u003cp\u003eThese fully protected cells simplify usage with their integrated PCB. Perfect for your single cell application these cells are not for pack building as doing so will defeat the PCB protection which is matched to the correct voltage on a single cell. If you are building a pack please choose one of our other cells and the appropriate PCB.\u003c\/p\u003e\u003ch3\u003eFeatures and Benefits:\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003cfont color=\"#ff0000\"\u003e\u003cstrong\u003eUnique and New! With integrated PCB Protection!\u003c\/strong\u003e\u003c\/font\u003e\u003c\/li\u003e\n\u003cli\u003eLithium Ion 18650 cylindrical rechargeable batteries\u003c\/li\u003e\n\u003cli\u003eInternal PCB protection prevents under-voltage at 2.5V and over-voltage at 4.25V.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eUnique PCB design and patent pending.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eHigher energy density and lower weight than other types rechargeable batteries\u003c\/li\u003e\n\u003cli\u003eManufactured under ISO9001-2000 to assure quality\u003c\/li\u003e\n\u003cli\u003eBattery tested based on International Electrotechnical Commission (IEC) standard to ensure capacity, quality and life time\u003c\/li\u003e\n\u003cli\u003eLighting or other device needing 3.7V power\u003c\/li\u003e\n\u003cli\u003eBuilding portable power device needing high energy density and low weight\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eProduct Specifications:\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCapacity: Nominal: 2500 mAh, Minimum: 2250 mAh\u003c\/li\u003e\n\u003cli\u003eInternal PCB protection prevents under-voltage at 2.5V and over-voltage at 4.25V.  \u003cstrong\u003e\u003cfont color=\"#ff0000\"\u003eUNIQUE INTERNAL PCB!\u003c\/font\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDimensions:\u003cul\u003e\n\u003cli\u003eDiameter 18.3+\/-0.5 mm\u003c\/li\u003e\n\u003cli\u003eHeight 66.5+\/- 0.5mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeight (Typical) Approx. 46 g\u003c\/li\u003e\n\u003cli\u003eNominal Voltage: Average 3.7V\u003c\/li\u003e\n\u003cli\u003eCut-off Voltage: 2.5V\u003c\/li\u003e\n\u003cli\u003eInternal Impedance: less or equal to  180  milliohm (with PTC)\u003c\/li\u003e\n\u003cli\u003eCycle Performance: 90% of initial capacity at 400 cycles\u003c\/li\u003e\n\u003cli\u003eCycle life: 500 cycles\u003c\/li\u003e\n\u003cli\u003eCharge: Current = 0.5C mA Voltage = 4.2 V End Current = 0.01 mA\u003c\/li\u003e\n\u003cli\u003eDischarge: Current = 0.5C mA End Voltage = 3.0V\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cimg src=\"https:\/\/files.batteryjunction.com\/frontend\/HostedImages\/misc\/LI-ION-SAFETY-WARNING.jpg\" alt=\"lithium-ion safety warning\"\u003e","brand":"Shenzhen Wholesale Portal","offers":[{"title":"Default Title","offer_id":47570479808744,"sku":"ULTRAFIRE-18650-2500-PTD","price":7.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/0117\/2456\/files\/ultrafire-18650-2500-ptd.jpg?v=1754623351","url":"https:\/\/www.batteryjunction.com\/products\/ultrafire-18650-2400-ptd","provider":"Battery Junction","version":"1.0","type":"link"}