{"product_id":"dongmagnetic-18650-power-battery-high-magnification-4000mah-10c-j-protection-functions-overcharge-explosion-proof-valve-short-circuit-overdischarge-protection-nickel-cobalt-manganese-ternary-lithium-3-7v-4ah","title":"Dongmagnetic 18650 Power Battery High Magnification 4000mAh 10C J Protection Functions Overcharge Explosion-Proof Valve Short Circuit Overdischarge Protection Nickel Cobalt Manganese Ternary Lithium 3.7V 4Ah","description":"\u003ch1\u003eDongmagnetic 18650 Power Battery 4000mAh 10C High Magnification Nickel Cobalt Manganese Ternary Lithium\u003c\/h1\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Dongmagnetic 18650 power battery 4000mAh 10C high magnification with protection features on white background\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US10\/5874\/2025-10-27\/original-image\/059ab0fa-e796-4478-bb47-6fe3a426da6f.webp\"\u003e\u003c\/div\u003e\u003cp\u003eThis 18650 power battery from Dongmagnetic delivers a rated capacity of 4000mAh and a 10C discharge rating, making it suited for devices that require high current output. The battery uses nickel cobalt manganese ternary lithium (NCM) chemistry, a widely adopted formulation for its balanced energy density and discharge characteristics. Safety features include overcharge, overdischarge, and short circuit protection, plus an explosion-proof valve. The nominal voltage is 3.7V and nominal capacity is 4Ah.\u003c\/p\u003e\u003ch2\u003eFeatures and Construction\u003c\/h2\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Dongmagnetic 18650 power battery 4000mAh 10C high magnification with protection features on white background\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US10\/5874\/2025-10-27\/original-image\/0c8d2980-1986-418b-88e2-4b9740557542.webp\"\u003e\u003c\/div\u003e\u003cp\u003eThis battery is built to support high-drain applications with built-in safeguards. The 18650 format is standard and fits many battery compartments.\u003c\/p\u003e\u003ch3\u003eProtection Circuitry\u003c\/h3\u003e\u003cp\u003eThe battery integrates overcharge protection, overdischarge protection, and short circuit protection to help prevent common electrical faults during use and charging. An explosion-proof valve provides an additional safety layer.\u003c\/p\u003e\u003ch3\u003eCapacity and Discharge\u003c\/h3\u003e\u003cp\u003eWith a nominal capacity of 4000mAh and a 10C high magnification discharge rating, this battery can deliver sustained power for devices that draw higher currents. The 3.7V nominal voltage is typical for lithium-ion cells.\u003c\/p\u003e\u003ch2\u003eUses and Placement\u003c\/h2\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Dongmagnetic 18650 power battery 4000mAh 10C high magnification with protection features on white background\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US10\/5874\/2025-10-27\/original-image\/26bc65cb-14b4-4857-9285-36f685ab3108.webp\"\u003e\u003c\/div\u003e\u003cp\u003eThis battery is designed for high-drain applications where standard consumer cells may not suffice. The 18650 size is common in many electronic devices, flashlights, and portable equipment.\u003c\/p\u003e\u003ch3\u003eHigh-Drain Devices\u003c\/h3\u003e\u003cp\u003eSuitable for power tools, e-bikes, and other equipment that require bursts of high current. The 10C rating indicates the battery can discharge at up to 10 times its capacity under load.\u003c\/p\u003e\u003ch3\u003eReplacements and Projects\u003c\/h3\u003e\u003cp\u003eCan be used as a replacement cell in battery packs or for DIY electronics projects that require protected 18650 cells with high current capability.\u003c\/p\u003e\u003ch2\u003eBenefits and Buying Value\u003c\/h2\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Dongmagnetic 18650 power battery 4000mAh 10C high magnification with protection features on white background\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US10\/5874\/2025-10-27\/original-image\/802a84e0-231a-422a-8c03-51be8a59fb1f.webp\"\u003e\u003c\/div\u003e\u003cp\u003eThis battery combines safety protections with high discharge capability in a standard size, offering practical value for demanding applications.\u003c\/p\u003e\u003ch3\u003eSafety and Reliability\u003c\/h3\u003e\u003cp\u003eMultiple protection functions reduce the risk of damage from overcharging, overdischarging, and short circuits, helping to prolong battery life and safe operation.\u003c\/p\u003e\u003ch3\u003eWhy Choose This Product\u003c\/h3\u003e\u003cp\u003eThe Dongmagnetic 18650 power battery provides a balance of capacity, discharge rate, and built-in safety features at an accessible price point, making it a practical choice for high-drain uses.\u003c\/p\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Dongmagnetic 18650 power battery 4000mAh 10C high magnification with protection features on white background\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US10\/5874\/2025-10-27\/original-image\/a491ee6d-357d-4b2e-a4e7-b9e61b4e4483_trans.webp\"\u003e\u003c\/div\u003e","brand":"4hz513-9c","offers":[{"title":"21700 4000mah 10C J \/ 3.7V \/ 4Ah","offer_id":54246533136726,"sku":"CJYD209954301AZ","price":12.58,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1013\/9199\/1126\/files\/26bc65cb-14b4-4857-9285-36f685ab3108.webp?v=1781807796","url":"https:\/\/4hz513-9c.myshopify.com\/products\/dongmagnetic-18650-power-battery-high-magnification-4000mah-10c-j-protection-functions-overcharge-explosion-proof-valve-short-circuit-overdischarge-protection-nickel-cobalt-manganese-ternary-lithium-3-7v-4ah","provider":"EverTide","version":"1.0","type":"link"}