{"product_id":"nitecore-nl1840r-18650-4000mah-rechargeable-usb-c-battery","title":"Nitecore NL1840R 4000mAh Rechargeable 18650 USB-C Battery - High Performance","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe \u003cstrong\u003eNitecore NL1840R battery\u003c\/strong\u003e offers a \u003cstrong\u003ecapacity of 4000mAh at 3.6V (14.4Wh)\u003c\/strong\u003e, collaboratively developed by Nitecore and its industry partner for an \u003cstrong\u003eenergy density of 288mWh\/g\u003c\/strong\u003e, \u003cstrong\u003e17.6% higher than conventional 18650 batteries\u003c\/strong\u003e. Equivalent to \u003cstrong\u003e4 CR123A batteries\u003c\/strong\u003e, it integrates a \u003cstrong\u003edirect USB-C charging port\u003c\/strong\u003e, eliminating the need for an external charger for \u003cstrong\u003emaximum runtime with ultimate simplicity\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2 class=\"font-claude-response-body break-words whitespace-normal\"\u003eIntegrated USB-C Charging and Performance\u003c\/h2\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eUnlike traditional 18650 batteries, the NL1840R \u003cstrong\u003erecharges directly via its integrated USB-C port\u003c\/strong\u003e (input 5V⎓1.5A), no external charger required. An \u003cstrong\u003eLED indicator\u003c\/strong\u003e confirms status: \u003cstrong\u003ered constant-on while charging\u003c\/strong\u003e, \u003cstrong\u003egreen constant-on once fully charged\u003c\/strong\u003e. It also remains compatible with \u003cstrong\u003eexternal Nitecore chargers\u003c\/strong\u003e (UMS4, UMS2, Ci4, Ci2) for \u003cstrong\u003edual charging flexibility\u003c\/strong\u003e. With over \u003cstrong\u003e500 full charging cycles\u003c\/strong\u003e, it still retains \u003cstrong\u003eover 80% of its original capacity\u003c\/strong\u003e, ensuring a durable and cost-effective investment.\u003c\/p\u003e\n\u003ch2 class=\"font-claude-response-body break-words whitespace-normal\"\u003eMaximum Internal and External Safety\u003c\/h2\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe NL1840R incorporates a \u003cstrong\u003ededicated intelligent protection circuit\u003c\/strong\u003e on the positive polarity, using a \u003cstrong\u003ehigh-quality battery protection chip\u003c\/strong\u003e and \u003cstrong\u003ehigh-power MOS-FET\u003c\/strong\u003e for optimal efficiency and output, effectively protecting against \u003cstrong\u003eovercharge, over-discharge and short-circuiting\u003c\/strong\u003e. A \u003cstrong\u003epressure relief valve\u003c\/strong\u003e activates in the event of a rapid temperature increase. Externally, \u003cstrong\u003enickel-plated stainless steel protectors\u003c\/strong\u003e at both ends ensure \u003cstrong\u003eimpact and oxidation resistance\u003c\/strong\u003e, coated with a \u003cstrong\u003edurable metallic film\u003c\/strong\u003e against abrasion. Its \u003cstrong\u003emercury-free, lead-free, cadmium-free\u003c\/strong\u003e construction ensures safe use and storage. \u003cstrong\u003eCE and RoHS certified\u003c\/strong\u003e for guaranteed international reliability.\u003c\/p\u003e\n\u003ch2 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eLi-ion 18650 rechargeable protected battery\u003c\/li\u003e\n\u003cli\u003eNominal capacity: 4000mAh at 3.6V (14.4Wh)\u003c\/li\u003e\n\u003cli\u003eEnergy density: 288mWh\/g\u003c\/li\u003e\n\u003cli\u003eCharging port: Integrated USB-C (input 5V⎓1.5A)\u003c\/li\u003e\n\u003cli\u003eCharging indicator: LED red (charging) \/ green (complete)\u003c\/li\u003e\n\u003cli\u003eRecharge cycles: Over 500 full cycles (\u0026gt;80% capacity retained)\u003c\/li\u003e\n\u003cli\u003eBuilt-in protection: Overcharge, deep discharge, short circuit\u003c\/li\u003e\n\u003cli\u003ePressure relief valve built-in\u003c\/li\u003e\n\u003cli\u003eNickel-plated stainless steel protectors (both ends)\u003c\/li\u003e\n\u003cli\u003eMercury free, lead free, cadmium free\u003c\/li\u003e\n\u003cli\u003eCertifications: CE, RoHS\u003c\/li\u003e\n\u003cli\u003eDimensions: 2.80\" \/ 71.0mm±0.3mm (L) x 0.73\" \/ 18.5mm±0.3mm (diameter)\u003c\/li\u003e\n\u003cli\u003eWeight: 1.80oz \/ 51g\u003c\/li\u003e\n\u003cli\u003eCompatible chargers: Integrated USB-C cable or external chargers UMS4, UMS2, Ci4, Ci2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eBox Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 NL1840R 4000mAh 18650 USB-C Battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eCompatibility\u003c\/h2\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eCompatible with most \u003cstrong\u003e18650-based\u003c\/strong\u003e flashlights and lighting devices available on the market.\u003c\/p\u003e\n\u003ch2 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eFAQ - Frequently Asked Questions\u003c\/h2\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eWhat is the lifespan of the NL1840R battery?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe battery can perform over 500 full recharge cycles while retaining over 80% of its original capacity.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eHow do I charge this battery?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eConnect a USB-C cable directly to the battery's integrated port, no external charger needed. It also remains compatible with Nitecore UMS4, UMS2, Ci4 and Ci2 chargers.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eWhat is the difference with a standard 18650 battery?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe NL1840R integrates a USB-C charging port directly on the battery for simple charging without an external charger, while also offering 17.6% higher capacity than conventional 18650 batteries.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eWhat is the warranty on this battery?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe NL1840R battery comes with a 12-month warranty from the date of purchase.\u003c\/p\u003e","brand":"Nitecore","offers":[{"title":"Default Title","offer_id":66909990649901,"sku":null,"price":38.95,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/3113\/8349\/files\/Battery-Nitecore-NL1840R-18650-4000mAh-Rechargeable-USB-C_1.png?v=1782143516","url":"https:\/\/www.powertrail.ca\/products\/nitecore-nl1840r-18650-4000mah-rechargeable-usb-c-battery","provider":"Power Trail","version":"1.0","type":"link"}