{"product_id":"10-pack-1s-3-7v-3a-li-ion-bms-pcm-battery-protection-boards","title":"10-Pack 1S 3.7V 3A Li-ion BMS PCM Battery Protection Boards","description":"\u003ch2\u003e10-Pack 1S 3.7V 3A Li-ion BMS PCM Battery Protection Boards for 18650 Cells\u003c\/h2\u003e\n\u003cp\u003eKeep your single-cell lithium-ion batteries running safely and efficiently with this 10-pack of 1S 3.7V 3A Battery Management System (BMS) protection boards. Designed for 18650 and similar li-ion cells, each compact PCM board delivers high-accuracy voltage monitoring, three-stage over-current detection, and MOS transistor-controlled charge\/discharge management — all in one reliable circuit.\u003c\/p\u003e\n\n\u003cp\u003eWhether you're building a DIY power bank, repairing a flashlight, or prototyping electronics, these BMS boards are an essential safeguard for your lithium battery projects. Made in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Accuracy Voltage Detection:\u003c\/strong\u003e Precisely monitors cell voltage to prevent overcharging and over-discharging.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Voltage Charger Terminal:\u003c\/strong\u003e Compatible with standard li-ion charger inputs using a high-voltage rated terminal.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThree-Stage Over-Current Detection:\u003c\/strong\u003e Built-in protection covers over-current level 1, over-current level 2, and load short-circuit events.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMOS Transistor Control:\u003c\/strong\u003e Intelligently manages both charging and discharging cycles for extended battery life.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePack of 10:\u003c\/strong\u003e Great value — stock up for multiple builds or repairs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e 1S (Single Series Cell)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNominal Voltage:\u003c\/strong\u003e 3.7V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOvercharge Protection Voltage:\u003c\/strong\u003e 4.25 ± 0.05V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOvercharge Release Voltage:\u003c\/strong\u003e 4.23 ± 0.05V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOver-Discharge Protection Voltage:\u003c\/strong\u003e 2.54 ± 0.1V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Continuous Charging Current:\u003c\/strong\u003e 2A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOver-Current Protection:\u003c\/strong\u003e 3A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Batteries:\u003c\/strong\u003e 18650 li-ion \/ lithium-ion cells\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 10 pieces per pack\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBattery Included:\u003c\/strong\u003e No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Mainland China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e10 × 1S 3.7V 3A BMS PCM Battery Protection Boards\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/hex-nut-bolt-extractor-tool-kit-10-piece\"\u003e10-Pc Hex Nut \u0026amp; Bolt Extractor Kit 9–19mm | HIP Tools\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-2-inch-8-piece-hex-short-socket-set-vanadium-steel\"\u003e1\/2\" Drive 8-Piece Hex Short Socket Set – Vanadium Steel\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10-piece-complete-gardening-tool-kit\"\u003e10-Piece Gardening Tool Kit – Iron Head \u0026amp; Plastic Handle\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.epa.gov\/recycle\/used-lithium-ion-batteries\" target=\"_blank\" rel=\"noopener\"\u003eEPA guidance on lithium-ion battery handling\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What type of batteries are these BMS protection boards compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: These 1S 3.7V BMS PCM boards are designed for single-cell 18650 lithium-ion (li-ion) batteries and similar 3.7V lithium cells used in DIY electronics, flashlights, power banks, and more.\u003c\/p\u003e\n\u003ch4\u003eQ: Does the BMS board include a cell balancing function?\u003c\/h4\u003e\n\u003cp\u003eA: No — these boards are designed for single-series (1S) configurations and do not include a balancing function, as balancing is only needed for multi-cell (2S+) packs.\u003c\/p\u003e\n\u003ch4\u003eQ: What protections do these boards provide?\u003c\/h4\u003e\n\u003cp\u003eA: Each board provides overcharge protection (triggers at 4.25V), over-discharge protection (triggers at 2.54V), and a three-stage over-current detection system covering over-current level 1, over-current level 2, and load short-circuit scenarios.\u003c\/p\u003e\n\u003ch4\u003eQ: How many boards are included in the pack?\u003c\/h4\u003e\n\u003cp\u003eA: You receive 10 individual BMS PCM protection boards per order — ideal for bulk DIY projects, repairs, or restocking your electronics workbench.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What type of batteries are these BMS protection boards compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These 1S 3.7V BMS PCM boards are designed for single-cell 18650 lithium-ion (li-ion) batteries and similar 3.7V lithium cells used in DIY electronics, flashlights, power banks, and more.\"}}, {\"@type\": \"Question\", \"name\": \"Does the BMS board include a cell balancing function?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No — these boards are designed for single-series (1S) configurations and do not include a balancing function, as balancing is only needed for multi-cell (2S+) packs.\"}}, {\"@type\": \"Question\", \"name\": \"What protections do these boards provide?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Each board provides overcharge protection (triggers at 4.25V), over-discharge protection (triggers at 2.54V), and a three-stage over-current detection system covering over-current level 1, over-current level 2, and load short-circuit scenarios.\"}}, {\"@type\": \"Question\", \"name\": \"How many boards are included in the pack?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"You receive 10 individual BMS PCM protection boards per order — ideal for bulk DIY projects, repairs, or restocking your electronics workbench.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/rw8eae-v1.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Tools \u0026 Household\", \"item\": \"https:\/\/rw8eae-v1.myshopify.com\/collections\/tools-household\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"10-Pack 1S 3.7V 3A Li-ion BMS PCM Battery Protection Boards\", \"item\": \"https:\/\/rw8eae-v1.myshopify.com\/products\/10-pack-1s-3-7v-3a-li-ion-bms-pcm-battery-protection-boards\"}]}\u003c\/script\u003e","brand":"HIP","offers":[{"title":"OneSize","offer_id":46320541925610,"sku":"1005012535760690-OneSize","price":16.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0718\/4590\/4618\/files\/S519e14c29d6749259f8fa03931a32a11J.webp?v=1790194886","url":"https:\/\/hipcustomerservice.com\/products\/10-pack-1s-3-7v-3a-li-ion-bms-pcm-battery-protection-boards","provider":"HIP","version":"1.0","type":"link"}