4A-5A PCB BMS Protection Board for 4 Packs 18650 Li-ion lithium Battery Cell 4S Features: Note: If the correct welding, testing the output of non-output, use other ways to activate charging about protection board! Overview: Main IC uses the original "Ricoh" imported components. Overcharge, over discharge, over current, short circuit protection, for a variety of capacities in various shapes 3.7V lithium batteries. Japan protection IC, VISHAY, AOS, IR and other high-quality MOSFET, FR-4 plate low temperature coefficient, design, fine workmanship, testing and comprehensive. Compact, suitable for many of the requirements of highly integrated, low-cost applications to meet a wide range of performance requirements to ensure the absolute safety and reliability of the battery pack. The protection board device description: Components for Japan's S-8254AAG protection chip; Genuine Bandai America's AO4407 * 2pcs; protect the chip as well as Ricoh R5431 series. Lithium battery protection board attributes: Model: HH-P3-10.8 Dimensions: 48 * 15 * 1.0mm Charging voltage range: 4.25-4.35v 0.05v Over-discharge voltage range: 2.3-3.0v 0.05v Working temperature: -40 --- + 50 c Storage conditions: -40-- + 80 c Maximum operating current: 4-5A The maximum instantaneous current: 6-7A Quiescent Current: less than 6uA Resistance: less than 45m Effective life: more than 50,000 hours Short circuit protection: protect, need to be recharged recovery Suitable for: 4packs 18650 lithium battery 14.8V 16.8V Main functions and features: over charge protection, over-discharge protection, short circuit protection, overcurrent protection. The protective plate using Japan's Ricoh rechargeable lithium iron phosphate battery protection IC; 1) high-accuracy voltage detection circuit; 2) terminal of the charger using high voltage devices; 3) Built-in three-stage overcurrent detection circuit (overcurrent 1, overcurrent 2, load short circuit); 4) MOS transistor can be controlled by a battery charge and discharge; 5) low standby current consumption. Function and Notice: 1, the lithium battery with protection board according to the wiring diagram connection, when the battery voltage is overcharge and over-discharge voltage between the voltage, and P +, P- charging 1 second, P + and P- output voltage of the battery voltage. 2, the battery charge function: between P + and P- plus charger to charge the battery, the battery voltage charge to overcharge detection voltage (4.25 +_0.025V), the protection circuit to cut off the charging path, to achieve overcharge protection. 3, Battery over-discharge protection: in between the P + and P- connected load to the battery discharge when the battery voltage drops to over-discharge voltage (2.7-0.05V), the protection circuit, shut off the discharge path to achieve the over-discharge protection. 4, Short circuit protection: When the P + and P- short circuit protection circuit will act quickly in 5-50uS, cut off access, short-circuit protection. 5, Overcurrent protection function: When the V- terminal voltage of (0.15 0.02V), the protection circuit will act quickly in 6.7-13.9ms, cut off access, overcurrent protection. Package Included: 1PCS * 4A-5A PCB BMS Protection Board for 4 Packs 18650 Li-ion lithium Battery Cell 4S