{"product_id":"21700-3000mah-3-7v-battery","title":"21700 3000MAH 3.7V BATTERY","description":"\u003ch2\u003e21700 3000mAh 3.7V Battery\u003c\/h2\u003e\n\u003cp\u003eA 3.7V 21700 lithium-ion cell rated at 3000mAh. The 21700 format is physically larger than the 18650 it replaced in many modern mods, and that extra size translates directly into longer runtime and better current handling at higher wattages.\u003c\/p\u003e\n\u003cp\u003eSupplied as a bare cell for use in external chargers and 21700-compatible regulated devices. If your mod shipped with a 21700 adapter sleeve, keep it — it lets the same device run 18650s as a backup.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3000mAh capacity in the larger 21700 format\u003c\/li\u003e\n\u003cli\u003e3.7V nominal output\u003c\/li\u003e\n\u003cli\u003eRechargeable lithium-ion cell\u003c\/li\u003e\n\u003cli\u003eSuited to higher-wattage devices\u003c\/li\u003e\n\u003cli\u003eSold as a bare cell for external charging\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBattery Safety — Please Read\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCharge only in a dedicated Li-ion charger, and never unattended.\u003c\/li\u003e\n\u003cli\u003eTransport cells in a plastic battery case, never loose in a pocket.\u003c\/li\u003e\n\u003cli\u003eCheck the wrap before every use — replace or retire any cell with damaged wrapping.\u003c\/li\u003e\n\u003cli\u003eIn dual-cell mods use a matched pair of the same brand, model and age, charged together.\u003c\/li\u003e\n\u003cli\u003eKeep your build within the cell's rated continuous discharge current.\u003c\/li\u003e\n\u003cli\u003eRetire cells that are swollen, damaged, or run unusually hot.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use a 21700 in an 18650 mod?\u003c\/strong\u003e\u003cbr\u003eA: No — a 21700 is both longer and wider. Some mods accept 21700s with 18650s via an adapter, but never the other way round.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is a 21700 better than an 18650?\u003c\/strong\u003e\u003cbr\u003eA: For high-wattage vaping, generally yes. It typically holds more charge and handles current better, at the cost of a bulkier device.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does it come charged?\u003c\/strong\u003e\u003cbr\u003eA: Cells ship at a partial storage charge. Charge fully in an external charger before first use.\u003c\/p\u003e","brand":"Unbranded","offers":[{"title":"Default Title","offer_id":49015012851967,"sku":null,"price":5.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/7143\/3215\/files\/21700-3000mah-37v-battery-vapewholesalesupplier-5756011.jpg?v=1786810746","url":"https:\/\/www.vapewholesalesupplier.co.uk\/products\/21700-3000mah-3-7v-battery","provider":"Vape Wholesale Supplier","version":"1.0","type":"link"}