{"product_id":"samsung-25r-2500mah-20a-flat-top-battery-2-pack-with-nitecore-um2-smart-charger-high-drain-power-bundle-for-edc-lights-drones-and-custom-packs","title":"Samsung 25R 2500mAh 20A Flat Top Battery 2-Pack with Nitecore UM2 Smart Charger – High-Drain Power Bundle for EDC Lights, Drones, and Custom Packs","description":"\u003ch3 class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eWhat’s in This Bundle:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e2x Samsung 25R 2500mAh 20A Flat Top Batteries\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e – Factory-fresh, high-drain 18650 cells.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e1x Nitecore UM2 Intelligent Dual-Slot Charger\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e – Smart charging with LCD display and QC 2.0 fast input.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e1x USB-C Charging Cable\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e – Ready to plug into wall adapters, power banks, or laptops.\u003c\/span\u003e\n\u003cbr\u003e\u003cem\u003e\u003cspan class=\"\"\u003e(Note: This kit does not include an AC wall adapter.)\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cstrong\u003e\u003cspan class=\"\"\u003eThis listing is for Flat Top. Looking for Button Top? \u003ca href=\"https:\/\/oneandes.com\/product\/samsung-30q-3000mah-15a-button-top-battery-4-pack-with-xtar-vc4sl-charger-high-drain-power-kit-for-vapes-tactical-flashlights-power-tools\/\"\u003eClick here to buy: Samsung \u003c\/a\u003e\u003ca href=\"https:\/\/oneandes.com\/product\/samsung-25r-2500mah-20a-button-top-battery-2-pack-with-nitecore-um2-smart-charger-high-drain-power-kit-for-vapes-flashlights-and-cordless-tools\/\"\u003e 25R Button Top + Nitecore UM2\u003c\/a\u003e\u003ca href=\"https:\/\/oneandes.com\/product\/samsung-30q-3000mah-15a-button-top-battery-4-pack-with-xtar-vc4sl-charger-high-drain-power-kit-for-vapes-tactical-flashlights-power-tools\/\"\u003e Bundle.\u003c\/a\u003e\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003ch3 class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eProduct Description:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eIf you're building a custom battery pack or running high-performance EDC gear, you need a cell that delivers under load. The Samsung 25R has been the trusted standard for years, and for good reason. It puts out a genuine \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e20A continuous discharge\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e—enough to handle heavy-duty flashlights, drones, or DIY power packs without voltage sag or overheating.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eThis bundle gives you \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003etwo brand-new 25R flat-top cells\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e and the \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eNitecore UM2 charger\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e. The UM2 takes the guesswork out of charging. It detects battery chemistry automatically—Li-ion, IMR, LiFePO4, or Ni-MH—and applies the exact charging profile the cell needs. The LCD panel shows you voltage, current, and capacity in real time, so you're not left wondering.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eIt supports \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQC 2.0 input\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e, pushing up to \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e1500mA per slot\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e. That means a 3500mAh cell can reach 80% charge in just over two hours. It also includes an IMR-optimized charge program for high-drain cells, and a repair mode that can revive over-discharged batteries you'd normally throw away.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eReliable power doesn't need to be complicated. This kit gets it right.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eKey Benefits:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e20A continuous output\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e – Stable, sustained current for high-drain builds.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eUp to 35A pulse burst\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e – Handles sharp power spikes when you need them.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eFast QC 2.0 charging\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e – 1500mA per slot cuts down charge times.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eSmart battery detection\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e – The UM2 reads your battery and picks the right charging mode.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eLCD real-time display\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e – View voltage, current, and capacity instantly.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eBuilt-in repair mode\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e – Revives over-discharged or dead cells.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eComprehensive safety\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e – Reverse polarity, short-circuit, and overheat protection.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eTechnical Specifications:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eBattery - Samsung 25R (Flat Top):\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eBrand: Samsung SDI\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eModel: INR18650-25R\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eCapacity: 2500mAh\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eVoltage: 3.6V \/ 3.7V\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eContinuous Discharge: 20A\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003ePulse Discharge: Up to 35A (short bursts only)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eStandard Discharge: 10A (for longer cycle life)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eInternal Resistance: ≤18mΩ\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eChemistry: Li-ion NMC\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eCut-Off Voltage: 2.5V\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eOperating Temp (Discharge): -20°C to 75°C\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eCycle Life: 250+ cycles at 20A\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eWeight: 45g\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eCharger - Nitecore UM2:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eInput: DC 5V\/2A, 9V\/2A (QC 2.0)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eMax Output: 1500mA per slot\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eTotal Output: 3000mA\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eDisplay: LCD (voltage, current, capacity)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eProtection: Reverse polarity, short-circuit, overheat, over-charge\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eComplete Battery Compatibility List:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"ds-scroll-area ds-scroll-area--show-on-focus-within ds-scroll-area--enabled _1210dd7 c03cafe9\"\u003e\n\u003cdiv class=\"ds-scroll-area__gutters\"\u003e\n\u003cdiv class=\"ds-scroll-area__horizontal-gutter\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"ds-scroll-area__vertical-gutter\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan class=\"\"\u003eBattery Type\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan class=\"\"\u003eSupported Models\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan class=\"\"\u003eVoltage\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003cbr\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eLi-ion \/ IMR\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e10440, 14500, 14650, 16500, 16340 (RCR123), 16650, 17350, 17500, 17650, 17670, 17700, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22500, 22650, 25500, 26500, 26650, 26700\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e3.6V \/ 3.7V \/ 4.35V\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eLiFePO4\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e(All compatible Li-ion sizes above)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e3.2V\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eNi-MH \/ Ni-Cd\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eAA, AAA, AAAA, C, D\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e1.2V\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003cbr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eDimensions: 152mm × 73mm × 40mm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eWeight: 148.3g\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eApplications:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eEDC flashlights and headlamps\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eDrone and UAV battery systems\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eDIY 12V and 24V battery pack builds\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003ePortable power stations and solar generators\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eHigh-drain remote-controlled models\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eFrequently Asked Questions (FAQ):\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ1: What's the real-world difference between 20A continuous and 35A pulse?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA: The 20A rating is the safe, long-term current you can pull without damaging the cell. The 35A rating is what the battery can deliver in short, milliseconds-long bursts—like starting a drone motor. You shouldn't run it at 35A continuously; that would overheat the cell and shorten its life. Treat it as a 20A battery and you'll be fine.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ2: Can I use the UM2 charger with LiFePO4 batteries?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA: Yes. The UM2 automatically detects LiFePO4 cells and switches to the correct 3.2V charge profile. No manual setup is required.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ3: What should I do if the charger shows \"EE EE\" on the screen?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA: That's the charger's way of saying it found a battery that's been over-discharged or is possibly damaged. The UM2 has a built-in repair mode—just press and hold the \"V\" button to try to revive a deeply drained cell.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ4: Can I charge different battery sizes at the same time?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA: Absolutely. The UM2 has two independent slots, so you can charge an 18650 in one slot and a 21700 in the other without any issues. Check the compatibility list above to ensure both sizes are supported.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ5: Can I power the UM2 from a power bank or solar panel?\u003c\/span\u003e\u003c\/strong\u003e\n\u003cbr\u003e\u003cspan class=\"\"\u003eA: Yes. The USB-C input makes it compatible with wall adapters, power banks, car chargers, and even portable solar panels—ideal for field use or road trips.\u003c\/span\u003e\u003c\/p\u003e\n\u003cstrong\u003e\u003cspan class=\"\"\u003eThis listing is for Flat Top. For Button Top,\u003ca href=\"https:\/\/oneandes.com\/product\/samsung-25r-2500mah-20a-button-top-battery-2-pack-with-nitecore-um2-smart-charger-high-drain-power-kit-for-vapes-flashlights-and-cordless-tools\/\"\u003e click here\u003c\/a\u003e\u003c\/span\u003e\u003c\/strong\u003e","brand":"Nitecore","offers":[{"title":"Default Title","offer_id":51454220599542,"sku":"OAS1663","price":35.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/2753\/6886\/files\/nitecore-um2-samsung-25r-flat-top-2pack-lcd-bundle-main_568cf802-8b83-4c59-afd5-03384457bd2c.webp?v=1786968474","url":"https:\/\/oneandes.com\/products\/samsung-25r-2500mah-20a-flat-top-battery-2-pack-with-nitecore-um2-smart-charger-high-drain-power-bundle-for-edc-lights-drones-and-custom-packs","provider":"OneAndes","version":"1.0","type":"link"}