{"product_id":"samsung-30q-18650-flat-top-2-pack-with-xtar-mc2-charger-3000mah-15a-high-drain-battery-kit-for-flashlights-diy-projects","title":"Samsung 30Q 18650 Flat Top 2-Pack with XTAR MC2 Charger – 3000mAh 15A High Drain Battery Kit for Flashlights \u0026 DIY Projects","description":"\u003ch2 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\" data-sourcepos=\"5:1-5:25;140-164\"\u003eWhat's in This Bundle\u003c\/h2\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\" data-sourcepos=\"7:1-9:54;166-302\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\" data-sourcepos=\"7:1-7:45;166-210\"\u003e2x Samsung INR18650-30Q, 3000mAh, Flat Top\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\" data-sourcepos=\"8:1-8:38;211-248\"\u003e1x XTAR MC2 dual-slot USB-C charger\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\" data-sourcepos=\"9:1-9:54;249-302\"\u003e1x USB-C charging cable (included with the charger)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" data-sourcepos=\"11:1-11:224;304-527\"\u003eA ready-to-go starter kit for anyone who needs two matched, genuine 18650 cells and a compact way to charge them — no separate charger purchase, no guessing whether a charger you already own is a safe match for these cells.\u003c\/p\u003e\n\u003cp data-sourcepos=\"11:1-11:224;304-527\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eThis listing is for Flat Top. Looking for Button Top? \u003ca href=\"https:\/\/oneandes.com\/product\/samsung-30q-18650-3000mah-15a-button-top-2-pack-xtar-mc2-charger-high-drain-battery-kit-for-vape-flashlight\/\"\u003eClick here to buy: Samsung 30Q Button Top + XTAR MC2 Bundle.\u003c\/a\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\" data-sourcepos=\"13:1-13:32;529-560\"\u003eWhy This Pairing Makes Sense\u003c\/h2\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" data-sourcepos=\"15:1-15:423;562-984\"\u003eFlat Top is the standard terminal type for most modern devices — box mods, DIY battery packs, and the majority of current-generation flashlights and power tools that don't rely on spring-loaded contacts. Buying two cells together as a matched pair (rather than singles) means you're starting with cells from a similar batch, which matters for devices that run cells in series or expect consistent performance between them.\u003c\/p\u003e\n\u003cp data-sourcepos=\"15:1-15:423;562-984\"\u003eWe chose the MC2 for this bundle not just for its steady 1A charge, but also for its 0V activation technology — it can safely revive over-discharged 30Q cells that other chargers would simply reject. This one feature alone can save you from throwing away a perfectly good battery.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" data-sourcepos=\"17:1-17:405;986-1390\"\u003eThe XTAR MC2 pairs well with this because it charges both slots at a full 1A simultaneously — no current-splitting trade-off for using both bays at once. It's a genuinely portable charger that doesn't ask you to sacrifice charge speed for its small size. If you're putting together a first 18650 kit and don't want to invest in a larger multi-bay charger yet, this bundle covers both pieces in one order.\u003c\/p\u003e\n\u003ch2 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\" data-sourcepos=\"19:1-19:31;1392-1422\"\u003eSamsung 30Q — Battery Specs\u003c\/h2\u003e\n\u003cdiv class=\"overflow-x-auto w-full px-2 mb-6\" data-sourcepos=\"21:1-31:30;1424-1781\"\u003e\n\u003ctable class=\"min-w-full border-collapse text-sm leading-[1.7] whitespace-normal\"\u003e\n\u003cthead class=\"text-left\"\u003e\n\u003ctr\u003e\n\u003cth class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\"\u003eParameter\u003c\/th\u003e\n\u003cth class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003cbr\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eBrand \u0026amp; Model\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eSamsung SDI INR18650-30Q\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eCapacity\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e3,000mAh (minimum ~2,900mAh)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eNominal Voltage\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e3.6V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eFull Charge Voltage\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e4.2V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eDischarge Cutoff Voltage\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e2.5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eMax Continuous Discharge\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e15A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eTerminal Type\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eFlat Top\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eProtection Circuit\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eNone (unprotected cell)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eWeight\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e~45-48g per cell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003cbr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" data-sourcepos=\"33:1-33:250;1783-2032\"\u003eThese are genuine cells, verified against Samsung's official datasheet — not rewrapped or relabeled stock. See our full \u003cstrong\u003e\u003ca href=\"https:\/\/oneandes.com\/product\/samsung-18650-rechargeable-battery-3-7volt-li-ion-batteries-3000mah-flat-top-18650-for-headlamp-and-flashlights-headlight-etc\/\"\u003eSamsung 30Q product page\u003c\/a\u003e\u003c\/strong\u003e for detailed test data and authenticity-checking tips if you want to go deeper than what's covered here.\u003c\/p\u003e\n\u003ch2 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\" data-sourcepos=\"35:1-35:28;2034-2061\"\u003eXTAR MC2 — Charger Specs\u003c\/h2\u003e\n\u003cdiv class=\"overflow-x-auto w-full px-2 mb-6\" data-sourcepos=\"37:1-50:91;2063-2909\"\u003e\n\u003ctable class=\"min-w-full border-collapse text-sm leading-[1.7] whitespace-normal\"\u003e\n\u003cthead class=\"text-left\"\u003e\n\u003ctr\u003e\n\u003cth class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\"\u003eParameter\u003c\/th\u003e\n\u003cth class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003cbr\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eInput\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eType-C, 5V⎓2A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eCharging Current\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e1A per slot — both slots simultaneously, no splitting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eCharging Method\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e3-stage charging (trickle → constant current → constant voltage), 2 independent slots with automatic detection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eEnd-of-Charge Voltage\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e4.2V ±0.05V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eEnd-of-Charge Current\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\u0026lt;130mA cutoff\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e0°C to 40°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eDimensions\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eL103mm x W53mm x H30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eWeight\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e54g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eCompatible Cell Sizes\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e3.6V\/3.7V Li-ion, sizes 10440 through 26650 (10440, 14500, 14650, 16340, 17335, 17500, 17670, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22650, 25500, 26650), including protected 21700 cells\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eExtra Feature\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003e\"0V\" activation technology — can recover some over-discharged cells\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eStatus Indicators\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eGreen = standby\/fully charged, Red = charging, Off\/unlit = reverse polarity or abnormal insertion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eSafety\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\"\u003eReverse polarity protection, short-circuit protection, 3-stage charge control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003cbr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" data-sourcepos=\"52:1-52:221;2911-3131\"\u003e\u003cstrong\u003eA realistic note on charge time:\u003c\/strong\u003e at a full 1A per slot with both cells charging at once, a 30Q reaches a full charge from empty in roughly 3.5-4 hours, accounting for the tapering constant-voltage stage near the end.\u003c\/p\u003e\n\u003cp data-sourcepos=\"52:1-52:221;2911-3131\"\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/oneandes.com\/product\/samsung-30q-18650-3000mah-15a-button-top-2-pack-xtar-mc2-charger-high-drain-battery-kit-for-vape-flashlight\/\"\u003e\u003cspan class=\"\"\u003eThis listing is for Flat Top. For Button Top, click here\u003c\/span\u003e\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\" data-sourcepos=\"54:1-54:48;3133-3180\"\u003eThings Worth Knowing Before You Use This Kit\u003c\/h2\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\" data-sourcepos=\"56:1-58:187;3182-3805\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\" data-sourcepos=\"56:1-56:229;3182-3410\"\u003e\n\u003cstrong\u003eThe 30Q is an unprotected cell.\u003c\/strong\u003e The charger enforces its own voltage and current cutoffs, but your device still needs to handle discharge-side protection — don't run these in a device with no low-voltage cutoff of its own.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\" data-sourcepos=\"57:1-57:208;3411-3618\"\u003e\n\u003cstrong\u003eDon't mix these cells with older ones you already own\u003c\/strong\u003e, even if they're also 30Q. Pairing cells from different ages or usage histories in a series\/parallel setup can cause imbalanced charging over time.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\" data-sourcepos=\"58:1-58:187;3619-3805\"\u003e\n\u003cstrong\u003eFlat Top won't work in devices that specifically require Button Top cells\u003c\/strong\u003e — check your device's battery compartment before ordering if you're not sure which terminal type it needs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\" data-sourcepos=\"60:1-60:30;3807-3836\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" data-sourcepos=\"62:1-63:158;3838-4063\"\u003e\u003cstrong\u003eCan this charger handle the Samsung 30Q's full capacity safely?\u003c\/strong\u003e Yes. The MC2 charges at a full 1A per slot, a safe, standard charging rate for a 3,000mAh cell — a full charge takes roughly 3.5-4 hours, both cells at once.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" data-sourcepos=\"65:1-66:331;4065-4438\"\u003e\u003cstrong\u003eWill Flat Top cells work in my device?\u003c\/strong\u003e If your device uses spring-loaded, flat, or magnetic-style contacts without a raised positive terminal requirement, Flat Top is the correct choice — it's the standard for most current mods, flashlights, and DIY packs. If your device specifically calls for Button Top (a raised positive terminal), you'll want that version instead.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" data-sourcepos=\"68:1-69:231;4440-4724\"\u003e\u003cstrong\u003eCan I charge two different battery sizes at once?\u003c\/strong\u003e Yes — the MC2's two slots operate independently with automatic size and chemistry detection, so you could charge one 18650 and a differently-sized cell (like a 21700) at the same time if needed. This bundle is set up for two 30Qs.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" data-sourcepos=\"71:1-72:178;4726-4946\"\u003e\u003cstrong\u003eIs this kit protected-cell compatible?\u003c\/strong\u003e The MC2 supports protected 21700 cells if you use it for those later. The Samsung 30Q cells included in this bundle are unprotected bare cells, which is standard for this model.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" data-sourcepos=\"74:1-75:177;4948-5171\"\u003e\u003cstrong\u003eWhat happens if I insert a cell backwards?\u003c\/strong\u003e The LED for that slot stays off rather than turning red or green, signaling a reverse-polarity or abnormal insertion — the charger won't attempt to charge until it's corrected.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" data-sourcepos=\"77:1-78:249;5173-5467\"\u003e\u003cstrong\u003eWhat does the \"0V activation\" feature do?\u003c\/strong\u003e It lets the charger attempt a slow, controlled charge on cells drained deep enough that a standard charger would refuse to recognize them at all. It won't save every over-discharged cell, but it can recover some that would otherwise be written off.\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" data-sourcepos=\"82:1-82:204;5474-5677\"\u003e\u003cstrong\u003eIn stock now.\u003c\/strong\u003e This bundle ships as a matched pair of genuine Samsung 30Q Flat Top cells with a verified XTAR MC2 charger — everything you need to get a dual-cell device running safely out of the box.\u003c\/p\u003e\n\u003cp data-sourcepos=\"82:1-82:204;5474-5677\"\u003e\u003cspan class=\"\"\u003eAuthentic Samsung Cells – sourced from official distributors. No rewraps, no fakes.\u003c\/span\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eFast \u0026amp; Tracked Shipping (US\/EU\/UK\/AU\/CA).\u003c\/span\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003e30-Day Satisfaction Guarantee.\u003c\/span\u003e\u003c\/p\u003e","brand":"XTAR","offers":[{"title":"Default Title","offer_id":51454215487734,"sku":"OAS1168","price":21.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/2753\/6886\/files\/samsung-30q-button-2pack-mc2-hero-1_59f2ad1f-23d8-4dcc-b58e-9656f23e73b2.webp?v=1786968311","url":"https:\/\/oneandes.com\/products\/samsung-30q-18650-flat-top-2-pack-with-xtar-mc2-charger-3000mah-15a-high-drain-battery-kit-for-flashlights-diy-projects","provider":"OneAndes","version":"1.0","type":"link"}