{"product_id":"21v-7mos-li-battery-protection-board-electric-tools","title":"21V 7MOS Li-Battery Protection Board for Electric Tools","description":"\n\u003ch2\u003e21V 7MOS Li-Battery Protection Board for Electric Tools\u003c\/h2\u003e\n\u003cp\u003eKeep your power tools running safely and efficiently with this \u003cstrong\u003e21V 7MOS Lithium Battery Protection Board\u003c\/strong\u003e. Designed for electric tools powered by Li-ion battery packs, this compact PCB module features a built-in \u003cstrong\u003ebalancing circuit\u003c\/strong\u003e and \u003cstrong\u003etemperature protection\u003c\/strong\u003e to help extend battery life and maintain stable performance during heavy-duty use.\u003c\/p\u003e\n\n\u003cp\u003eWhether you're rebuilding a battery pack or upgrading an existing setup, this reusable protection board offers a reliable solution for DIY enthusiasts and professional tradespeople alike.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e21V, 7MOS configuration\u003c\/strong\u003e — optimized for common cordless electric tool battery packs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-in balancing circuit\u003c\/strong\u003e — keeps individual cells balanced for consistent performance and longer pack life\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTemperature protection\u003c\/strong\u003e — monitors heat levels to help prevent overheating during charge and discharge cycles\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReusable design\u003c\/strong\u003e — built to last across multiple battery rebuilds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact form factor\u003c\/strong\u003e — approximately 90.5 × 62 mm, fits neatly inside standard tool battery housings\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlastic + metal construction\u003c\/strong\u003e — durable and lightweight\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 21V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMOSFET Count:\u003c\/strong\u003e 7MOS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Plastic + Metal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e ~90.5 × 62 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Contents:\u003c\/strong\u003e 1× Protection Board (batteries not included)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in China\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\/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\/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\/105-degree-right-angle-driver-with-hex-screwdriver-bit\"\u003e105° Right Angle Driver with 1\/4\" Hex Screwdriver Bit | HIP\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Colors may vary slightly from images due to monitor settings and lighting conditions. Please allow minor measurement tolerances of ±1–2 mm.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What type of battery packs is this 21V 7MOS protection board compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This Li-battery protection board is designed for 21V lithium-ion (Li-ion) battery packs commonly used in cordless electric tools such as drills, saws, and screwdrivers. Always verify your battery pack's voltage and cell configuration before installing.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does the balancing circuit activate during charging or discharging?\u003c\/h4\u003e\n\u003cp\u003eA: The built-in balancing circuit typically activates during the charging process to equalize voltage levels across individual cells, helping maintain consistent capacity and prolonging the overall life of the battery pack.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is the battery or charger included with this protection board?\u003c\/h4\u003e\n\u003cp\u003eA: No — this listing includes only the 21V 7MOS PCB protection board (1 piece). Batteries and charger are sold separately.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What does the temperature protection feature do?\u003c\/h4\u003e\n\u003cp\u003eA: The temperature protection circuit monitors the board's operating temperature and can cut off current if unsafe heat levels are detected, helping to safeguard both the battery cells and the tool from damage caused by thermal stress.\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 battery packs is this 21V 7MOS protection board compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This Li-battery protection board is designed for 21V lithium-ion (Li-ion) battery packs commonly used in cordless electric tools such as drills, saws, and screwdrivers. Always verify your battery pack's voltage and cell configuration before installing.\"}}, {\"@type\": \"Question\", \"name\": \"Does the balancing circuit activate during charging or discharging?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The built-in balancing circuit typically activates during the charging process to equalize voltage levels across individual cells, helping maintain consistent capacity and prolonging the overall life of the battery pack.\"}}, {\"@type\": \"Question\", \"name\": \"Is the battery or charger included with this protection board?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No — this listing includes only the 21V 7MOS PCB protection board (1 piece). Batteries and charger are sold separately.\"}}, {\"@type\": \"Question\", \"name\": \"What does the temperature protection feature do?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The temperature protection circuit monitors the board's operating temperature and can cut off current if unsafe heat levels are detected, helping to safeguard both the battery cells and the tool from damage caused by thermal stress.\"}}]}\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\": \"21V 7MOS Li-Battery Protection Board for Electric Tools\", \"item\": \"https:\/\/rw8eae-v1.myshopify.com\/products\/21v-7mos-li-battery-protection-board-electric-tools\"}]}\u003c\/script\u003e","brand":"HIP","offers":[{"title":"one size","offer_id":46320234594538,"sku":"1005012943306473-one size","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0718\/4590\/4618\/files\/S77705b48cf9e4eb09c67b16335a266cat.webp?v=1790187592","url":"https:\/\/hipcustomerservice.com\/products\/21v-7mos-li-battery-protection-board-electric-tools","provider":"HIP","version":"1.0","type":"link"}