4S Li ion 16.8V Battery BMS and PCM for electric sweeper lithium battery or other electric tool lithium power supplier PCB with 12A or 15A

Description This BMS was designed specially for 4S 16.8V  Li ion battery which can be applied on Electric tool or electric sweeper lithium battery   ,which can fit for various type of lithium ion chemistry such as :NCM battery ,lithium polymer battery etc . Features and characteristics :  For 4S Li ion  Battery Application . Dimension :35*35*1.5mm  With Balance function With full set of protection functions : such as Over-charge and over-discharge protection , over-current protectiton , short circuit protection ,temperature protection  with integrated management solution to provide stable performance Constant current : 12A  or 15A Parameters reference : Constant  discharge current:  12A or 15A   Short circuit protection  External short / release it by disconnect the external short will recover Over current protection  20A±5A or 40A±6A  High temperature protection   can be added if needs Charge current less than 8A   Balance  NA Charge voltage 16.8V CC to CV Overcharge protection cut-off voltage  4.25V±0.025V Overcharge detection delay times 1000±50mS Overdischarge cut-off voltage  2.7V ±0.1V Over-discharge detection delay times 1000±50mS Overdischarge release voltage  3.0V ±1V Self-current consumption stand-by : less than 10uA          In working status : less than 35uA Dimension   35*35*1.5mm         Notice of connection  : A. Firstly ,Please connect bold wires from B- port of the BMS to the negative port of the battery pack .(B- wire should be as short as possible ) ,then connect these voltage detection wires (Please take off these wires from the BMS before connecting these wires to the battery to avoid any connection mistakes ) B. Second ,Please start connect these balance wires to the Battery system from BC0 ,Black thin wire should be connected to the battery negative , and the second wire -white wire BC1 should be connect to the positive port of the first series cell . BC2  should connect to the positive port of second series cell ,and BC3 wire to the third cell’s positive ….connection in this way in order one by one till to the last cell postive port C. Third . After connection of these balance wires finished , please measure connector voltage from each Neighbouring wires ,the voltage between each neighbouring wires for Li ion battery should be less than 4V and for Lifepo4 Battery should be less than 3.5V ,after confirmation of these wires connection order , you can plug cable connector into the BMS .–wrong connection order will damage our BMS surely . please be carefully with this step . D. Finally , connect C- wire as negative of charge and discharge , B wire as positive of charge and discharge , those wires should use bold wire to make connection for large current distribution purpose . then please comparing the voltage from the BMS and voltage directly from the Battery to see if they are the same or not . if they are the same value . your connection is correct , otherwise terrible things will happend !!! Transaction terms : 1) Shipment time : once received your order ,we will proceed it quickly within 3~4 working days without problems .order can be cancled within these days ,otherwise we will reject to cancle the order ,because our items can not get back when in the process of shipment . we will inform our buyer if  there is a stock problems with the order and arrange a properly agreenment on the shipment schedule by email . 2) Shipment Methods : Client can choose suitable shipment methods based on your demand ,Post air parcel service or Express service , we will ship all orders strictly in according to the selected shipment methods by our customer . normally , Post parcel shipment time takes 7~60days depends on different countries serivce . and express takes 2~15days to the destination normally . 3) About Tracking number : Tracking number will be uploaded and will be informed by the registered email on each Friday ,please pay attention to your email later on for the tracking number update . 4) Quality Service : we will take a full responsibility for any defect product caused by our design and production problems ,warranty time is 12 months since the shipment date . but for any defect product caused by any wrong or slavery application from customers . we will not take the responsibility for that , because for this BMS product ,it do need some skills to make installation . please consult us in advance if you are not clearly with bms connection in the hope of avoid any mistakes of connection . if Buyer damaged the BMS , we can offer the free repairing service to our client , but client should take care of shipment cost .please know it kindly in advance . thanks Please send email to this address for any questions [email protected], we will give you reply within 12hours without problems .