{"product_id":"hxyp-2s-a18-18650-2s-4a-bms-lithium-ion-protection-board-with-cell-balancing-7-4v-8-4v","title":"HXYP-2S-A18 18650 2S 4A BMS Lithium-Ion Protection Board with Cell Balancing (7.4V \/ 8.4V)","description":"\u003cp data-path-to-node=\"5\"\u003eThe \u003cb data-path-to-node=\"5\" data-index-in-node=\"4\"\u003eHXYP-2S-A18 18650 2S 4A BMS\u003c\/b\u003e is a highly capable, \"enhanced\" battery management system designed specifically for two-cell (2S) 18650 lithium-ion battery packs. While many micro-BMS boards cap out at a strict 3 Amps and lack cell equalization, this enhanced module steps up the performance. It safely sustains a 4 Amp continuous discharge rate, providing that extra bit of overhead needed for slightly more demanding DC motors, brighter LED arrays, and punchier audio amplifiers without constantly tripping the over-current protection.\u003c\/p\u003e\n\u003cp data-path-to-node=\"6\"\u003eThe standout feature of this specific board is its integrated \u003cb data-path-to-node=\"6\" data-index-in-node=\"62\"\u003eactive cell balancing\u003c\/b\u003e circuitry. When two cells are wired in series, they naturally drift apart in voltage over multiple charge cycles. If left unchecked, one cell will overcharge while the other starves, killing the battery pack prematurely. This board actively bleeds off excess voltage from the faster-charging cell, ensuring both 18650s hit exactly 4.2V at the exact same time. This guarantees you get the maximum possible runtime and cycle life out of your custom battery builds.\u003c\/p\u003e\n\u003cp data-path-to-node=\"7\"\u003e\u003cb data-path-to-node=\"7\" data-index-in-node=\"0\"\u003eKey Features \u0026amp; Functional Advantages:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"8\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,0,0\"\u003e\u003cb data-path-to-node=\"8,0,0\" data-index-in-node=\"0\"\u003e4A Continuous Discharge:\u003c\/b\u003e Provides reliable, steady power delivery for low-to-medium drain devices, with overhead to handle minor motor start-up spikes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,1,0\"\u003e\u003cb data-path-to-node=\"8,1,0\" data-index-in-node=\"0\"\u003eIntegrated Cell Balancing:\u003c\/b\u003e Automatically equalizes the voltage between the two series-connected cells during the final phase of charging, preventing premature pack degradation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,2,0\"\u003e\u003cb data-path-to-node=\"8,2,0\" data-index-in-node=\"0\"\u003e4-Tier Protection Suite:\u003c\/b\u003e Constantly monitors the pack to instantly sever the connection in the event of over-voltage (over-charging), under-voltage (deep discharging), over-current, or a hard short-circuit.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,3,0\"\u003e\u003cb data-path-to-node=\"8,3,0\" data-index-in-node=\"0\"\u003eEnhanced MOSFETs:\u003c\/b\u003e Built with upgraded, low-resistance MOSFETs that reduce heat generation and improve overall efficiency compared to standard, budget-tier 2S boards.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,4,0\"\u003e\u003cb data-path-to-node=\"8,4,0\" data-index-in-node=\"0\"\u003eCompact PCB Footprint:\u003c\/b\u003e Designed to sit cleanly across the bridge of two side-by-side 18650 cells, making it incredibly easy to heat-shrink into a clean, professional-looking custom pack.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"9\"\u003e\u003cb data-path-to-node=\"9\" data-index-in-node=\"0\"\u003ePerfect For:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"10\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,0,0\"\u003e\u003cb data-path-to-node=\"10,0,0\" data-index-in-node=\"0\"\u003eUpgraded Portable Audio:\u003c\/b\u003e Protects the internal 7.4V lithium power supply inside mid-wattage DIY Bluetooth speakers and desktop radios.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,1,0\"\u003e\u003cb data-path-to-node=\"10,1,0\" data-index-in-node=\"0\"\u003eCustom LED Lighting:\u003c\/b\u003e Safely regulates power for portable 7.4V LED video lights, headlamps, and outdoor camping lanterns.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,2,0\"\u003e\u003cb data-path-to-node=\"10,2,0\" data-index-in-node=\"0\"\u003eSmall RC Toys \u0026amp; Robotics:\u003c\/b\u003e Provides safe, steady voltage to 7.4V DC gear motors and servos found in tabletop rovers and custom STEM robotics.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,3,0\"\u003e\u003cb data-path-to-node=\"10,3,0\" data-index-in-node=\"0\"\u003eReplacing Dead BMS Boards:\u003c\/b\u003e An excellent, drop-in upgrade for repairing the internal battery packs of older 7.4V shavers, clippers, and low-power handheld vacuums.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"11\"\u003e\u003cb data-path-to-node=\"11\" data-index-in-node=\"0\"\u003eTechnical Specifications:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"12\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,0,0\"\u003e\u003cb data-path-to-node=\"12,0,0\" data-index-in-node=\"0\"\u003eModel:\u003c\/b\u003e HXYP-2S-A1818650\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,1,0\"\u003e\u003cb data-path-to-node=\"12,1,0\" data-index-in-node=\"0\"\u003eConfiguration:\u003c\/b\u003e 2S (2 Cells in Series)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,2,0\"\u003e\u003cb data-path-to-node=\"12,2,0\" data-index-in-node=\"0\"\u003eSupported Chemistry:\u003c\/b\u003e Lithium-Ion (18650, 21700) or Lithium Polymer (LiPo)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,3,0\"\u003e\u003cb data-path-to-node=\"12,3,0\" data-index-in-node=\"0\"\u003eNominal Voltage:\u003c\/b\u003e 7.4V\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,4,0\"\u003e\u003cb data-path-to-node=\"12,4,0\" data-index-in-node=\"0\"\u003eFull Charge Voltage:\u003c\/b\u003e 8.4V (Requires an 8.4V CC\/CV lithium charger)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,5,0\"\u003e\u003cb data-path-to-node=\"12,5,0\" data-index-in-node=\"0\"\u003eMaximum Continuous Current:\u003c\/b\u003e 4A\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,6,0\"\u003e\u003cb data-path-to-node=\"12,6,0\" data-index-in-node=\"0\"\u003ePeak \/ Transient Current:\u003c\/b\u003e ~5A to 8A (Brief spikes)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,7,0\"\u003e\u003cb data-path-to-node=\"12,7,0\" data-index-in-node=\"0\"\u003eOvercharge Detection Voltage:\u003c\/b\u003e 4.25V to 4.35V (±0.05V) per cell\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,8,0\"\u003e\u003cb data-path-to-node=\"12,8,0\" data-index-in-node=\"0\"\u003eOver-Discharge Detection Voltage:\u003c\/b\u003e 2.5V to 3.0V (±0.05V) per cell\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,9,0\"\u003e\u003cb data-path-to-node=\"12,9,0\" data-index-in-node=\"0\"\u003eBalancing Current:\u003c\/b\u003e ~45mA\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,10,0\"\u003e\u003cb data-path-to-node=\"12,10,0\" data-index-in-node=\"0\"\u003eApproximate Dimensions:\u003c\/b\u003e ~34 mm x 17 mm x 3 mm (Dimensions can vary slightly by manufacturer batch)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"K-TECHNICS","offers":[{"title":"Default Title","offer_id":42858720329799,"sku":null,"price":400.0,"currency_code":"KES","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0680\/7637\/2039\/files\/41nEfpx7Y8L.jpg?v=1780938829","url":"https:\/\/www.ktechnics.com\/products\/hxyp-2s-a18-18650-2s-4a-bms-lithium-ion-protection-board-with-cell-balancing-7-4v-8-4v","provider":"K-TECHNICS","version":"1.0","type":"link"}