Product Name: Easy Installation BMS/PCM PCB for Lithium Battery Packs Model NO.: LWS-5S20A-306 Max Workign Current: 20A Type Charging Voltage: 21V Over Charge Protection: 4.25V+-0.025V Ove Discahrge Protection: 2.70V+-0.08V Over Current Protection: 80+-10A Short Circuit Protection Function: Cut Load Application: Digital Equipment, Electrice, Ebike, etc metal Coating: Copper Mode of Production: SMT Layers: Multilayer base Material: Fr-4 Certification: RoHS, ISO Customized: Customized Trademark: LWS Transport Package: Anti-Static Bag Packaging/ Carton Packaging Specification: 88*52*4mm Origin: Shenzhen, China HS Code: 8536300000 Product Description Product Advantages1.True lithum battery pack BMS factory2.Supply OEM/ODM and custom service3.High quality with smart balance function4.Wholesale price5.Environment5.ISO9001/ISO14001/CE/ROHS certificates6.Fast deliveryabout the battery BMSFunction:Detect and protect the battery from over-charge ,over-dicharge, over-current short-circuit ,temperature detecting protection and auotmatically voltage balance function.with high end electronic components (High End IC and MOSFET ),simple structuredesign will let it have more stable quality working performance ,Flexible application (it can be used for lessseries battery by leaving some connection pins at empty status ),full set of protection measures let it works wellwithout any infulence from external unexpected accidents.about your products,just tell us the relative voltage/ cells/ current Aor equipment etc,we will help to recomment the most suitable products for you. or we design for you!Product specificationPCM Specifications For 18.5v(5S)Li-ion Battery PacksLWS-5S20A-306(5S)No.Test itemCriterion1VoltageCharging voltageDC:21V CC/CVBalance voltage for single cell2CurrentBalance current for single cellCurrent consumption≤50μAMaximal continuous charging current20AMaximal continuous Discharging current20A3Over charge ProtectionOver charge detection voltage for single cell4.25±0.025VOver charge detection delay time800mS-1.5SOver charge release voltage for single cell4.10±0.05V4Over discharge protectionOver discharge detection voltage for single cell2.70±0.08VOver discharge detection delay time800mS-1300mSOver discharge release voltage for single cell3.0±0.08V5Over current protectionOver current detection voltage100±25mVOver current detection current80±10ADetection delay time 800ms-1300msRelease conditioncut load6Short protectionDetection conditionExterior short circuitDetection delay time50-500usRelease conditioncut load7ResistanceProtection circuitry(MOSFET)≤50mΩ8TemperatureOperating Temperature Range-20~+70ºCStorage Temperature Range-40~+125ºCOther products :Packing and shippingFactoryFAQQ: How do Ijudge what material my battery is ?A: Please take alook at the battery body.if the normal voltage of your battery shows as 3.2V,the battery will beLiFePo4.If the normal voltage of your battery shows as 3.6V or 3.7V, the battery will be Li-ion or Li-polymer battery. you can also ask battery manufacturer the material of battery.Q: Can Iuse this protection circuit board for my battery?A: Can use this protection circuit board, or not?There are 2questions:How much cells in series is your battery pack?The protection circuit board you need to buy must be same cells in series as your battery pack.What material is your battery?only the LiFePo4 battery has different electric parameter from other battery, so if you need buy the protection circuit board for LiFePo4 battery ,Please let us know firstly.Q: Do we need cell balance or not?A: The function of balance :Since battery is made of many pcs of cells in parallel and in series, the cells can't bethe same as no two people in the world is the same ,so can only put in group with similar performance is notconsistent ,which will lead to each cell voltage is not consistent as well after the completion of the charging ifwithout balance functionQ: Do you have Minimum Order Requirement (MOQ)?A: No, We don't have MOQ, Different customer have different requirement ,We can provide various capacity and size as per your requirements,Also ODM /OEM is welcome.Q: What is your term of payment?A: PayPal, T/T, L/C,Western UnionMore question can contact :Web:http://www.lws-pcm.comAny further questions, Welcome to contact our sales person by sending inquiry .Your satisfaction is our pleasure. Let's Join hands for mutual Benefits!