{"product_id":"4s-40a-lithium-battery-protection-board","title":"4S 40A Lithium Battery Protection BMS Board for 3.7V NMC cells","description":"\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eLithium Ion batteries though have high energy density and light in weight, are very dangerous if abused i.e. if you overcharge or undercharge the battery or draw more current than it can provide then it can explode damaging the surrounding or even potentially harm the humans around. To prevent this from happening you should use your batteries with a protection board. \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eThis \u003c\/span\u003e\u003cb\u003e4S 40A Lithium-ion Battery Protection Board\u003c\/b\u003e\u003cspan style=\"font-weight: 400;\"\u003e monitor protects three cells connected in series by monitoring the voltage and current in and out of the battery pack and if any unsafe condition happens then it will cut off the battery from the load or the charger. This can be used in any DIY project where the current is low like \u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003e or \u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003e based projects, 3D printers, Quadcopters, Robotics applications etc. As it can handle current up to 40A you can also use it in slightly higher currents. This Board is suitable for 18650 cells having nominal voltage of 3.6V or 3.7V, so it can provide a nominal voltage of about 14V and maximum voltage of 16.8V.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cb\u003eSpecifications\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eShort circuit protection\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eOvercharge protection\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eOver-discharge protection\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eOvercurrent protection\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eOvercharge Voltage per cell: 4.2V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eMaximum Working Current: 40A\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cb\u003eProduct Description\u003c\/b\u003e\u003c\/p\u003e\u003cdiv style=\"text-align: left;\"\u003e\u003cimg style=\"margin-bottom: 16px; float: none;\" alt=\"4S 40A Lithium Battery Protection BMS Board for 3.7V NMC cells\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0300\/6424\/6919\/files\/4S-40A-Lithium-Battery-Protection-Board_600x600.jpg?v=1634035948\"\u003e\u003c\/div\u003e\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eAs the Cells are connected in series the positive of 1\u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003est\u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003e cell will be connected to negative of the 2\u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003end\u003c\/span\u003e\u003cspan style=\"font-weight: 400;\"\u003e cell and so on hence in picture only the terminals are mentioned.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cb\u003eDimensions : \u003c\/b\u003e\u003cspan style=\"font-weight: 400;\"\u003eL*B= 60x45mm\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003eOther Sources : \u003c\/b\u003e\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cb\u003ePackage Contents\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003e1×4S Li-ion Battery Protection Board - 40A PCB BMS\u003c\/span\u003e\u003c\/p\u003e","brand":"mysite","offers":[{"title":"Default Title","offer_id":46028734693547,"sku":"BCL-QC0906","price":138.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/1205\/1115\/files\/4S-40A-Lithium-Battery-Protection-Board.jpg?v=1767865835","url":"https:\/\/www.yuzxcn.com\/products\/4s-40a-lithium-battery-protection-board","provider":"Yuzx","version":"1.0","type":"link"}