Specification Brand : Reland Sung BulletPoint : Reland Sung BulletPoint1 : 2.4 GHz WiFi + Bluetooth LE SoC BulletPoint2 : Support IEEE 802.11 b/g/n and Bluetooth 5 BulletPoint3 : Please note that SoCs and Modules are packaged as 10 units per reel, so the price for one commodity has been set to reel price by default. CompatibleDevices : Personal Computer ConnectivityTechnology : Bluetooth ControlMethod : touch ExternallyAssignedProductIdentifier1 : 0723585708122 ExternallyAssignedProductIdentifier2 : 723585708122 IncludedComponents : Wi-Fi InputVoltage : 5 volts ItemName : 4S 30A High Current Li-ion Lithium Battery 18650 Charger Protection Board Module 14.4V 14.8V 16.8V Overcharge Over Short Circuit ItemPackageDimensions_Height : 10.9 centimeters ItemPackageDimensions_Length : 2.4 centimeters ItemPackageDimensions_Width : 4.4 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : electronic-microprocessors Manufacturer : Reland Sung Material : iron ModelNumber : PIC16F627A-I/P MountingType : Surface Mount NumberOfItems : 1 PartNumber : 723585708122 ProductDescription : 1. The module name: 4 string lithium battery protection board 2. The modular nature: polymer lithium battery protection board 3. Overcharge detection voltage: 4.25 ± 0.025V 4. Overcharge release voltage: 4.15 ± 0.05V 5. Over discharge detection voltage: 2.50 ± 0.08V 6. Over discharge termination voltage: 3 ± 0.1V 7. Overcurrent: 20-30A 8. Working current: 15A (natural cooling:10A, plus the heat sink:15A, the maximum instantaneous current:30A) 9. Termination conditions:the release of protection condition then automatic recovery, without activation (optional charger to activate) 10. Main functions: the overcharge protection function, overdischarge protection, short-circuit protection, over current protection. 11. Working temperature: -40~+85 degrees (high temperature environment and please strengthen radiating) 12. Connection: welding output 13. Module size: 50mm*22mm*4mm Applications: The protective board can be used as the nominal voltage of 14.4V, 14.8V, 16.8V four series of polymer lithium battery group, four series of 18650 lithium batteries as overcharge and over discharge, short circuit protection. Without the activation function in the power application for high instantaneous current,and in inverter application for avoid false triggering protection.So it will use more convenient. Note:No part design on the back, can be attached to the heat sink to ensure high current work situation for a long time. Package Included: 1PC*4S 30A 18650 lithium battery protection board ProductSiteLaunchDate : 2018-11-16T08:00:00.000Z Size : ESP32-S3 SpecificationMet : Rohs Style : ESP32-S3 SupplierDeclaredDgHzRegulation : not_applicable Voltage : 14.8 volts WarrantyDescription : 2 year manufacture WirelessCommStandard1 : 2.4_ghz_radio_frequency WirelessCommStandard2 : bluetooth