{"product_id":"molicel-p42a-21700-inr-4200mah-battery","title":"Molicel P42A 21700 INR 4200mAh Battery","description":"\u003ch2 class=\"font-heading-extra-bold margin0 h2\"\u003eMolicel P42A 21700 INR 4200mAh Battery\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eMolicel P42A 21700 4200mAh Battery\u003c\/strong\u003e is a single lithium-ion cell in the 21700 size, with a 3.6V nominal voltage and a flat-top, unprotected build. Capacity is rated at 4200mAh typical and 4000mAh minimum, and the cell is charged to 4.2V on an external charger.\u003c\/p\u003e\n\u003cp\u003eMolicel rates the cell for a 45A maximum continuous discharge, while 30A is the figure vape mods are normally matched to. It fits regulated mods with a removable 21700 bay and is supplied as one battery, so a second cell or a charger is bought separately.\u003c\/p\u003e\n\u003ch3\u003eWhat to Know About the Molicel P42A\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e4200mAh typical capacity in the 21700 size\u003c\/li\u003e\n\u003cli\u003e45A maximum continuous rating from Molicel, with 30A the usual vape figure\u003c\/li\u003e\n\u003cli\u003eFlat-top, unprotected cell for regulated mods\u003c\/li\u003e\n\u003cli\u003eFits 21700 battery bays only, not 18650 or 20700\u003c\/li\u003e\n\u003cli\u003eSold as one battery, with no charger included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFeatures of Molicel P42A 21700 4200mAh Battery\u003c\/h2\u003e\n\u003cp\u003eFour ratings matter when a cell is matched to a mod: capacity, discharge, construction and charge rate. Each is set out below, along with what to check on \u003ca href=\"https:\/\/piratevapes.co.uk\/collections\/box-mods\" title=\"Box Mods\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eBox Mods\u003c\/strong\u003e\u003c\/a\u003e first.\u003c\/p\u003e\n\u003ch3\u003e4200mAh Typical Capacity\u003c\/h3\u003e\n\u003cp\u003eThe cell is rated at \u003cstrong\u003e4200mAh\u003c\/strong\u003e typical, with a 4000mAh minimum, and 15.5Wh of energy is stored at the typical figure. A Molicel 4200mAh cell is larger than an 18650 in both diameter and length. Runtime still depends on the mod and the wattage it is run at. Swapping in a spare is quick.\u003c\/p\u003e\n\u003ch3\u003e45A Maximum Discharge Rating\u003c\/h3\u003e\n\u003cp\u003eMolicel gives \u003cstrong\u003e45A\u003c\/strong\u003e as the maximum continuous discharge, with the cell cut off at 2.5V. Vape mods are normally matched to \u003cstrong\u003e30A\u003c\/strong\u003e continuous instead, which leaves headroom on most regulated devices. The mod's wattage and cell count decide the current drawn per cell, so both should be checked against that figure first.\u003c\/p\u003e\n\u003ch3\u003eFlat-Top, Unprotected Cell\u003c\/h3\u003e\n\u003cp\u003eEvery cell is a \u003cstrong\u003eflat-top, unprotected\u003c\/strong\u003e design, which suits bays with flat contacts. Nothing inside the wrap guards against over-discharge or short circuits, so those cut-outs come from the mod itself. A 21700 vape battery in this form lies flush against the bay contacts.\u003c\/p\u003e\n\u003ch3\u003e4.2A Standard Charge Rate\u003c\/h3\u003e\n\u003cp\u003eThe standard charge current is \u003cstrong\u003e4.2A\u003c\/strong\u003e, and a full charge to 4.2V takes about 1.5 hours. Charging is done in an external charger, as the cell carries no USB or other input of its own. Charging is best kept at or below the rated current, which makes a charger with adjustable current worth checking.\u003c\/p\u003e\n\u003ch2\u003eHow to Fit the Molicel P42A\u003c\/h2\u003e\n\u003cp\u003eVery little is needed for fitting: a charged cell and a mod with a removable 21700 bay.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStep 1:\u003c\/strong\u003e The cell is slid out of any packaging and its wrap is checked for tears, dents or exposed metal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStep 2:\u003c\/strong\u003e A full charge is given on an external Li-ion charger set to 4.2V, since the cell has no charge port.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStep 3:\u003c\/strong\u003e The flat positive end is lined up with the polarity marks printed inside the battery bay.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStep 4:\u003c\/strong\u003e The cell is eased into the bay and the door is closed until it clicks into place.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStep 5:\u003c\/strong\u003e Battery level is read from the mod's screen before the first session, and a full charge is not assumed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStep 6:\u003c\/strong\u003e A spare cell is best carried in a \u003ca href=\"https:\/\/piratevapes.co.uk\/collections\/carry-cases\" title=\"Carry Cases\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCarry Cases\u003c\/strong\u003e\u003c\/a\u003e unit, because loose coins or keys can bridge the terminals of an unprotected cell.\u003c\/p\u003e\n\u003ch2\u003eWhat's in the Molicel P42A Pack\u003c\/h2\u003e\n\u003cp\u003eOnly the cell itself is supplied, without any kit around it.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1x Molicel P42A 21700 4200mAh Battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNeither a charger nor a device is bundled.\u003c\/p\u003e\n\u003ch2\u003eDevices Compatible With the Molicel P42A\u003c\/h2\u003e\n\u003cp\u003eAny device with a removable \u003cstrong\u003e21700\u003c\/strong\u003e bay takes a Molicel 21700 cell like this one, including single-cell and dual-cell \u003ca href=\"https:\/\/piratevapes.co.uk\/collections\/regulated-mods\" title=\"Regulated Mods\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eRegulated Mods\u003c\/strong\u003e\u003c\/a\u003e that list 21700 batteries in their manuals.\u003c\/p\u003e\n\u003cp\u003eAn 18650 bay is too narrow for a 21700 cell, and a 20700 bay is too short. Devices with a sealed, built-in battery cannot take it either. The battery compartment sticker or the manual gives the quickest confirmation of cell size before an order is placed.\u003c\/p\u003e\n\u003ch2\u003eAbout Molicel and the INR-21700-P42A\u003c\/h2\u003e\n\u003cp\u003eMolicel cells are built by E-One Moli Energy, which runs facilities in Taiwan and Canada. The P42A appears in the range as INR-21700-P42A, and full charge, discharge, temperature and cycle curves are published for it in a data sheet.\u003c\/p\u003e\n\u003cp\u003eThat published detail is why the ratings above are stated as they are. Pirate Vapes also carries the Molicel P26A in the smaller 18650 size, for mods that take the older cell format.\u003c\/p\u003e\n\u003ch2\u003eStock Up on the Molicel P42A\u003c\/h2\u003e\n\u003cp\u003eA dual-cell mod needs a second cell. Bay chargers and carry cases are the usual extras, and anyone looking for a Molicel P42A UK cell to keep as a spare can add both in one order. Chargers for 21700 cells are listed under \u003ca href=\"https:\/\/piratevapes.co.uk\/collections\/vape-battery-chargers\" title=\"Battery Chargers\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eBattery Chargers\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eTracked 24 orders placed before 3:30pm on a weekday are dispatched that same day. Checkout at \u003cstrong\u003ePirate Vapes\u003c\/strong\u003e verifies age before any hardware is sent, and sales are for over-18s only.\u003c\/p\u003e\n\u003ch2\u003eConclusion\u003c\/h2\u003e\n\u003cp\u003eThis battery suits owners of regulated mods with a 21700 bay who want a high-capacity cell as a backup or a like-for-like swap. It also works as a first cell for a new device, once a matching charger is on hand.\u003c\/p\u003e\n\u003cp\u003eA charger and case from \u003ca href=\"https:\/\/piratevapes.co.uk\/collections\/vape-accessories\" title=\"Vape Accessories\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eVape Accessories\u003c\/strong\u003e\u003c\/a\u003e finish the order, and the wider range of cells is listed at \u003ca href=\"https:\/\/piratevapes.co.uk\" title=\"Pirate Vapes\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003ePirate Vapes\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eFAQs\u003c\/h2\u003e\n\u003ch3\u003eIs the Molicel P42A 21700 battery protected or unprotected?\u003c\/h3\u003e\n\u003cp\u003eThe cell is an unprotected flat-top design with no circuit board under the wrap. Over-discharge and short-circuit cut-outs are handled by the mod, so the device needs to provide them.\u003c\/p\u003e\n\u003ch3\u003eWhat is the continuous discharge rating of the Molicel P42A?\u003c\/h3\u003e\n\u003cp\u003eMolicel lists a maximum continuous discharge of 45A for the cell. Vape mods are normally matched to 30A continuous, which is the figure to compare with the mod's current draw.\u003c\/p\u003e\n\u003ch3\u003eDoes the Molicel P42A fit 18650 or 20700 mods?\u003c\/h3\u003e\n\u003cp\u003eThe cell fits removable 21700 bays only. An 18650 bay is too small for it, and a 20700 bay is too short, so the mod's manual should be checked before ordering.\u003c\/p\u003e\n\u003ch3\u003eDoes the P42A battery come with a charger?\u003c\/h3\u003e\n\u003cp\u003eA single cell is supplied and no charger is included. Charging is not possible through the cell itself, so a separate bay charger is needed.\u003c\/p\u003e\n\u003ch3\u003eHow long does the Molicel P42A take to charge?\u003c\/h3\u003e\n\u003cp\u003eMolicel lists 1.5 hours for a full charge at the standard 4.2A current, ending at 4.2V. Other chargers vary with the current they supply.\u003c\/p\u003e\n\u003ch3\u003eHow many batteries come in one order of the Molicel 4200mAh cell?\u003c\/h3\u003e\n\u003cp\u003eOne Molicel P42A is supplied per order. Owners of dual-cell mods who need a matched pair should order two.\u003c\/p\u003e","brand":"Molicel","offers":[{"title":"Default Title","offer_id":52942338851098,"sku":null,"price":9.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0995\/5675\/3690\/files\/Molicel_P42A_21700_INR_4200mAh_Battery.jpg?v=1790257037","url":"https:\/\/piratevapes.co.uk\/products\/molicel-p42a-21700-inr-4200mah-battery","provider":"Pirate Vapes","version":"1.0","type":"link"}