{"title":"18490 Batteries","description":"\u003cp\u003e18490 batteries are compact cylindrical lithium-ion cells built for high performance in small form factor devices. They offer a strong blend of capacity and discharge potential while staying relatively lightweight.\u003c\/p\u003e\n\n\u003cp\u003eThese cells typically operate at a nominal voltage of around 3.6 to 3.7 V, with capacities ranging from about 1,000 mAh up to 1,600 mAh depending on the model and chemistry. Some use IMR chemistry (Li-Mn), while others are standard Li-ion variants, and there are also LiFePO₄ versions that deliver slightly lower voltage around 3.2 V for added thermal stability.\u003c\/p\u003e\n\n\u003cp\u003e18490 cells are ideal for compact flashlights, high-drain handheld devices, and other equipment that requires reliable power in a small form factor. Their combination of voltage, capacity, and portability makes them a practical choice for both everyday and professional use.\u003c\/p\u003e","products":[{"product_id":"efest-3457-button","title":"Efest 3457 IMR 18490 1100mAh 3.7V Unprotected Lithium Manganese (LiMn2O4) Button Top Battery - Boxed","description":"\u003ch2\u003eEfest IMR 18490- Button Top\u003c\/h2\u003e\u003cp\u003eEfest IMR 18490 batteries are specifically designed for electronic devices such as unique flashlights.  They fit securely in most devices because of their button top terminals and their 1100mAh capacity provides long-lasting power.  These batteries use IMR chemistry and are the safest way to power your electronic devices.  If you're looking for a high quality and reliable power source, then the Efest IMR 18490 is the battery for you.\u003c\/p\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003eChemistry: Li-MnO2 \u003c\/li\u003e\n\u003cli\u003eVoltage: 3.7V\u003c\/li\u003e\n\u003cli\u003eBattery size: 18490 \u003c\/li\u003e\n\u003cli\u003eCapacity: 1100mAh\u003c\/li\u003e\n\u003cli\u003eEstimated charge cycles: 300\u003c\/li\u003e\n\u003cli\u003eDiameter: 0.72\" (18.19mm)\u003c\/li\u003e\n\u003cli\u003eHeight: 1.992\" (50.60 mm)\u003c\/li\u003e\n\u003cli\u003eWeight: 0.88 oz (25g)\u003c\/li\u003e\n\u003cli\u003eUnprotected Cell\u003c\/li\u003e\n\u003cli\u003eButton Top\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":"APEXIUM TECHNOLOGY CO., LIMITED","offers":[{"title":"Default Title","offer_id":47569853612264,"sku":"EFEST-3457-BUTTON","price":4.75,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/0117\/2456\/files\/efest-3457-button_-_image.jpg?v=1754619961"},{"product_id":"efest-3689-flat","title":"Efest 3689 IMR 18490 1100mAh 3.7V Unprotected Lithium Manganese (LiMn2O4) Flat Top Battery - Boxed","description":"\u003ch2\u003eEfest IMR 18490- Flat Top\u003c\/h2\u003e\u003cp\u003eEfest IMR 18490 batteries are specifically designed for devices like high powered flashlights.  These particular batteries contain an IMR chemistry which means that they do not require a built-in protective circuit like ICRs do. The flat top terminals allows these batteries to fit easily and securely in most applications that takes an 18490.  \u003c\/p\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003eChemistry: Li-MnO2 \u003c\/li\u003e\n\u003cli\u003eVoltage: 3.7V\u003c\/li\u003e\n\u003cli\u003eBattery size: 18490 \u003c\/li\u003e\n\u003cli\u003eCapacity: 1100mAh\u003c\/li\u003e\n\u003cli\u003eEstimated charge cycles: 300\u003c\/li\u003e\n\u003cli\u003eDiameter: 0.71\" (18.19mm)\u003c\/li\u003e\n\u003cli\u003eHeight: 1.92\" (48.70mm)\u003c\/li\u003e\n\u003cli\u003eWeight: 0.88 oz (25g)\u003c\/li\u003e\n\u003cli\u003eUnprotected Cell\u003c\/li\u003e\n\u003cli\u003eFlat Top\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":"APEXIUM TECHNOLOGY CO., LIMITED","offers":[{"title":"Default Title","offer_id":47569854300392,"sku":"EFEST-3689-FLAT","price":4.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/0117\/2456\/files\/efest-3689-flat_-_image.jpg?v=1754619968"},{"product_id":"efest-imr18490-4359","title":"Efest Purple IMR 18490 1000mAh 3.7V Unprotected High Drain 15A Lithium-Ion (Li-Ion) Rechargeable Flat Top Battery (4359)","description":"\u003ch2\u003eEfest IMR 18490 - 1000mAh - 15A\u003c\/h2\u003e\u003cp\u003eTo power your favorite flashlights, you're going to need a battery that is up to the challenge and no battery performs as well as the \u003cstrong\u003eEfest IMR 18650\u003c\/strong\u003e. This battery comes standard with a \u003cstrong\u003e1000mAh\u003c\/strong\u003e capacity. Reliable IMR technology keeps this battery safe and stable, and it can even be used without a protection circuit unlike standard Li-Ion batteries.\u003c\/p\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\t\u003cul\u003e\t\t\u003cli\u003eChemistry: Li-MnO2\u003c\/li\u003e\t\t\u003cli\u003eCapacity: 1000mAh\u003c\/li\u003e\t\t\u003cli\u003eMaximum Discharge Current: 15A\u003c\/li\u003e\t\t\u003cli\u003eTerminal Type: Flat\u003c\/li\u003e\t\t\u003cli\u003eUnprotected Cell\u003c\/li\u003e\t\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":"APEXIUM TECHNOLOGY CO., LIMITED","offers":[{"title":"Default Title","offer_id":47569857085672,"sku":"EFEST-IMR18490-4359","price":6.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/0117\/2456\/files\/efest-imr26650-generic_1_1.jpg?v=1754619970"},{"product_id":"nitecore-nl18490a-opt","title":"Nitecore NL18490A IMR 18490 1100mAh 3.7V Unprotected High-Drain 11A Lithium Manganese (LiMn2O4) Battery - Flat Top or Button Top - Boxed","description":"\u003ch2\u003eNitecore NL18490A\u003c\/h2\u003e\u003ch3\u003e1100mAh High Discharge IMR Battery\u003c\/h3\u003e\u003cstrong\u003e\u003cem\u003e18490 Sized Battery with IMR Chemistry\u003c\/em\u003e\u003c\/strong\u003e\u003cp\u003eA favorite for use within the power tool and medical device industry, the \u003cstrong\u003eNitecore NL18490A\u003c\/strong\u003e is an 18490 sized battery that provides heavy duty power coupled with unbeatable reliability.  The cell's IMR chemistry makes it a perfect addition to your high-drain electronics, so stable it can be used without protection circuitry. The NL18490A runs at \u003cstrong\u003e3.7 Volts\u003c\/strong\u003e and can store an impressive \u003cstrong\u003e1100mAh\u003c\/strong\u003e of energy, specifically made for use in applications that need a high-discharge current.\u003c\/p\u003e\u003cp\u003eThe NL18490A has Lithium-ion Manganese Oxide (LiMn204) or IMR Li-ion chemistry.  This chemistry is not only rechargeable, but stable and utilized in high-drain devices.  Its internal structure uses a cathode made from Lithium Manganese Oxide in a three-dimensional spinel construction that allows for enhanced ion flow.  This improved flow lowers internal cell resistance, giving you a faster charge, and high-current discharge.  IMR batteries were made particularly for high-drain applications, such as lights, power tools, electronics and medical devices.\u003c\/p\u003e\u003cp\u003eBy purchasing a rechargeable battery, you are not only saving money, but you are also helping the environment.  Reusing your drained cells has never been easier.  Don't have a charger for your specific size battery?  We offer a variety of smart chargers for your convenience.  The \u003ca href=\"nitecore-d2-digicharger.html\" target=\"_blank\"\u003eNitecore Digicharger D2 2-Channel Smart Battery Charger\u003c\/a\u003e is one of the most versatile chargers we offer that can charge your 18490 Li-ion battery as well as a wide range of other sizes too.\u003c\/p\u003e\u003cstrong\u003eFeatures \u0026amp; Specifications:\u003c\/strong\u003e\t\u003cul\u003e\t\t\u003cli\u003eAvailable with Flat Top or Button Top terminals\u003c\/li\u003e\t\t\u003cli\u003eTypical Capacity: 1100mAh\u003c\/li\u003e\t\t\u003cli\u003eNominal Voltage: 3.7V\u003c\/li\u003e\t\t\u003cli\u003eDischarge Voltage: 2.8V\u003c\/li\u003e\t\t\u003cli\u003eCharging Voltage: 4.20±0.05V\u003c\/li\u003e\t\t\u003cli\u003eMax Continous Discharging Current: 11A\u003c\/li\u003e\t\t\u003cli\u003eDimensions:\t\t\t\u003cul\u003e\t\t\t\t\u003cli\u003eLength: 1.94\" (49.4 mm)\u003c\/li\u003e\t\t\t\t\u003cli\u003eDiameter: 0.72\" (18.3 mm)\u003c\/li\u003e\t\t\t\t\u003cli\u003eWeight: 0.99 oz. (28 g)\u003c\/li\u003e\t\t\t\u003c\/ul\u003e\t\t\u003c\/li\u003e\t\u003c\/ul\u003e\u003cimg src=\"https:\/\/files.batteryjunction.com\/frontend\/HostedImages\/misc\/LI-ION-SAFETY-WARNING.jpg\"\u003e","brand":"Nitecore","offers":[{"title":"Button Top","offer_id":47570108612840,"sku":"NITECORE-NL18490A-BUTTON","price":9.95,"currency_code":"USD","in_stock":false},{"title":"Flat Top","offer_id":47570108645608,"sku":"NITECORE-NL18490A-FLAT","price":9.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/0117\/2456\/files\/nitecore-nl18490a_2.jpg?v=1754621180"}],"url":"https:\/\/www.batteryjunction.com\/collections\/18490-batteries.oembed","provider":"Battery Junction","version":"1.0","type":"link"}