{"product_id":"1s-bms-protection-board-3-2v-3-7v-li-ion-lipo-lfp-5a-25a-pcm","title":"1S BMS Protection Board 3.2V 3.7V Li-ion LiPo 5A–25A PCM","description":"\n\u003ch2\u003e1S BMS Battery Protection Board — 3.2V \/ 3.7V Li-ion \u0026amp; LiPo, 5A to 25A\u003c\/h2\u003e\n\u003cp\u003eKeep your single-cell lithium battery pack running safely and efficiently with this versatile \u003cstrong\u003e1S Battery Management System (BMS) Protection Board\u003c\/strong\u003e. Compatible with 3.2V LiFePO4 and 3.7V Li-ion \/ LiPo cells, this compact PCM board actively guards against overcharge, over-discharge, overcurrent, and short-circuit events — making it an ideal solution for solar street lamps, DIY battery packs, e-bikes, power tools, and more.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Current Range:\u003c\/strong\u003e Available in 5A, 10A, 15A, 20A, and 25A continuous discharge ratings to suit your specific application.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Cell Chemistry Support:\u003c\/strong\u003e Works with 3.2V LiFePO4 (LFP) and 3.7V Li-ion \/ LiPo single-cell configurations.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOvercharge Protection:\u003c\/strong\u003e Cuts off charging at 3.6–3.75V (LFP) or 4.25V (Li-ion) with a detection delay of just 0.5–1 second.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOver-Discharge Protection:\u003c\/strong\u003e Disconnects load at 2.0–2.3V (LFP) or 2.7V (Li-ion) to preserve long-term cell health.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOvercurrent \u0026amp; Short-Circuit Protection:\u003c\/strong\u003e Rapid 12–40ms overcurrent detection and 250–300ms short-circuit detection keep both battery and load safe.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAutomatic Recovery:\u003c\/strong\u003e Overcurrent and short-circuit protection resets automatically or upon charger\/load reconnection — no manual reset required.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-Low Quiescent Current:\u003c\/strong\u003e ≤30µA in operating mode and ≤20µA in sleep mode for minimal idle drain.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow On-Resistance:\u003c\/strong\u003e ≤50mΩ (standard) \/ ≤20mΩ (high-current variants) for efficient power delivery.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Plastic + metal build measuring 110 × 40.5 mm for easy integration into battery enclosures.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupported Cell Types\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLi-ion, LiPo (3.7V) \/ LiFePO4 (3.2V)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eContinuous Discharge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5A \/ 10A \/ 15A \/ 20A \/ 25A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransient Discharge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8–30A \/ 10–50A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCharging Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.6–3.75±0.05V \/ 4.25±0.025V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOvercharge Detection Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.6–3.75±0.05V \/ 4.25±0.025V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOver-Discharge Detection Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.0–2.3±0.05V \/ 2.7±0.05V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShort-Circuit Detection Delay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300ms \/ 250ms\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMain Circuit Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤50mΩ \/ ≤20mΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤30µA\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSleep Mode Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤20µA\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBoard Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e110 × 40.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePlastic + Metal\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage Contents\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1× BMS Protection Board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWiring Guide\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eB+\u003c\/strong\u003e — Connect to the positive terminal of the battery cell\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eB−\u003c\/strong\u003e — Connect to the negative terminal of the battery cell\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eP+\u003c\/strong\u003e — Output \/ Input positive terminal (charger \u0026amp; load)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eP−\u003c\/strong\u003e — Output \/ Input negative terminal (charger \u0026amp; load)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10pcs-wooden-handle-nylon-bristle-paint-brush-for-oil-painting-dusting-and-cleaning-unrechargeable-hand-tool-set-without-batt-2\"\u003e10Pcs Wooden Handle Nylon Bristle Paint Brush — Hand Tool Set\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-precision-japanese-double-edged-hand-saw-sk5-steel-fine-toothed-for-carpentry-and-gardening-6-inch-blade-portable-mini-1\"\u003e1pc Precision Japanese Double-Edged Hand Saw — SK5 Steel, 6-Inch Blade\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-professional-heavy-duty-pruning-shears-with-anti-slip-handle-design-suitable-for-trimming-thick-and-sturdy-branches\"\u003e1pc Professional Heavy-Duty Pruning Shears with Anti-Slip 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 battery chemistries is this 1S BMS protection board compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This BMS board supports both 3.7V Li-ion \/ LiPo single cells and 3.2V LiFePO4 (LFP) single cells. The overcharge, over-discharge, and charging voltage thresholds differ between the two chemistries, so be sure to select the correct current rating and voltage configuration for your specific battery type.\u003c\/p\u003e\n\u003ch4\u003eQ: How does the overcurrent and short-circuit protection recover?\u003c\/h4\u003e\n\u003cp\u003eA: The board features automatic recovery for both overcurrent and short-circuit events. Protection will reset either automatically after a fault clears, or by reconnecting the charger or disconnecting the load — no manual button or reset procedure is needed.\u003c\/p\u003e\n\u003ch4\u003eQ: Which current rating should I choose for my application?\u003c\/h4\u003e\n\u003cp\u003eA: Choose a continuous discharge current rating that meets or slightly exceeds your load's maximum draw. For example, a 10A motor load would be best paired with the 15A or 20A board to allow headroom for transient current spikes. Always check your application's peak current requirement before selecting a rating.\u003c\/p\u003e\n\u003ch4\u003eQ: Can this BMS board be used for solar street lamp applications?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. This board is well-suited for solar street lamp charge and discharge management. It handles both the charging input from a solar controller and the discharge output to the LED load, while protecting the lithium cell from overcharge during daytime charging and over-discharge during nighttime operation.\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 battery chemistries is this 1S BMS protection board compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This BMS board supports both 3.7V Li-ion \/ LiPo single cells and 3.2V LiFePO4 (LFP) single cells. The overcharge, over-discharge, and charging voltage thresholds differ between the two chemistries, so be sure to select the correct current rating and voltage configuration for your specific battery type.\"}}, {\"@type\": \"Question\", \"name\": \"How does the overcurrent and short-circuit protection recover?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The board features automatic recovery for both overcurrent and short-circuit events. Protection will reset either automatically after a fault clears, or by reconnecting the charger or disconnecting the load — no manual button or reset procedure is needed.\"}}, {\"@type\": \"Question\", \"name\": \"Which current rating should I choose for my application?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Choose a continuous discharge current rating that meets or slightly exceeds your load's maximum draw. For example, a 10A motor load would be best paired with the 15A or 20A board to allow headroom for transient current spikes. Always check your application's peak current requirement before selecting a rating.\"}}, {\"@type\": \"Question\", \"name\": \"Can this BMS board be used for solar street lamp applications?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. This board is well-suited for solar street lamp charge and discharge management. It handles both the charging input from a solar controller and the discharge output to the LED load, while protecting the lithium cell from overcharge during daytime charging and over-discharge during nighttime operation.\"}}]}\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:\/\/pg0se5-51.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/pg0se5-51.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"1S BMS Protection Board 3.2V 3.7V Li-ion LiPo 5A–25A PCM\", \"item\": \"https:\/\/pg0se5-51.myshopify.com\/products\/1s-bms-protection-board-3-2v-3-7v-li-ion-lipo-lfp-5a-25a-pcm\"}]}\u003c\/script\u003e","brand":"Babs","offers":[{"title":"A 15A","offer_id":52586086957196,"sku":"14:200006151#A 15A","price":3.98,"currency_code":"USD","in_stock":true},{"title":"A 10A","offer_id":52586086989964,"sku":"14:865#A 10A","price":3.2,"currency_code":"USD","in_stock":true},{"title":"A 25A","offer_id":52586087022732,"sku":"14:426734894#A 25A","price":6.93,"currency_code":"USD","in_stock":true},{"title":"A 20A","offer_id":52586087055500,"sku":"14:94#A 20A","price":4.89,"currency_code":"USD","in_stock":true},{"title":"B 10A","offer_id":52586087088268,"sku":"14:504#B 10A","price":2.82,"currency_code":"USD","in_stock":true},{"title":"B 5A","offer_id":52586087121036,"sku":"14:366#B 5A","price":3.56,"currency_code":"USD","in_stock":true},{"title":"B 20A","offer_id":52586087153804,"sku":"14:29#B 20A","price":4.51,"currency_code":"USD","in_stock":true},{"title":"B 15A","offer_id":52586087186572,"sku":"14:496#B 15A","price":3.45,"currency_code":"USD","in_stock":true},{"title":"B 25A","offer_id":52586087219340,"sku":"14:13656805002#B 25A","price":5.07,"currency_code":"USD","in_stock":true},{"title":"A 5A","offer_id":52586087252108,"sku":"14:644092418#A 5A","price":3.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/2862\/6316\/files\/Sc0ca4dfdf13a474fa965bdc983545a22Z.webp?v=1786894919","url":"https:\/\/babcustomersupport.com\/products\/1s-bms-protection-board-3-2v-3-7v-li-ion-lipo-lfp-5a-25a-pcm","provider":"Babs","version":"1.0","type":"link"}