10 Best Bms 5s 20a 21v In The Us - Black Friday 2024
Best Choice1
ACEIRMCACEIRMC 2pcs 5S 21V 100A BMS Li-ion LMO Ternary Lithium Battery Protection Circuit Board Li-Polymer Balance Charging Module (5S 21V)
Main highlights- high quality 18650 battery charging Module
- Single cell battery overcharge protect voltage : 4.21-4.29 V
- Single cell battery overcharge protect recover voltage : 4.14-4.24V
- Overcharge protect Current : 100A
- BMS 100A LMO Ternary Lithium Battery Protection Circuit Board Li-Polymer Balance Charging Module Battery Overcharge Protection Circuit
9.8Exceptional
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Value for Money2
MELIFEMELIFE 5PCS BMS 5S 25A 21V Battery Protection Board for Lithium Battery Protection Circuit Charging Board Module Integrated Circuits.
Main highlights- When connecting 2 sets of batteries in series, please ensure that the voltage of each set of batteries is the same. If they are different, please fill each set of batteries separately and use them in series.
- Overcharge protect current: 60A;Over-discharge protect current: 60A;Over-discharge protectdelay: 0.5 - 1.5S.
- Noted:This Protective Plate Cannot be used for Lithium Iron Phosphate Batteries. Lithium Battery Protection Board is Strictly Prohibited to be Used in Series.
- Before installing the protection board,the voltage difference between each battery is not higher than 0.05V, the internal resistance is not more than 5mΩ, the difference of the capacitance is less than 30mAh
- 18650 Lithium Battery Protection Board:Charging Current: 25A;Charging Voltage : 21V for 5S BMS Board.
9.7Exceptional
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3
DKARDUDKARDU 5S 20A 18V 21V BMS Module Li-Ion Lithium Battery Pack Battery Charger Protection Board with Nickel Strip DC Male Cable for Power Tools
Main highlights- Purpose: The protection board is for 5 series Li-ion batteries, mainly used for electric power tools.
- Protection function: Stable various protective functions for charging and discharging, such as overcharge protection, over-discharge protection and short circuit protection.
- Product features: It uses special IC for 5S lithium batteries as processor to detect real-time voltage, charge and discharge current and ambient temperature of each battery.
- Low current: Low power consumption, the working current is about 25uA and quiescent current is about 6uA.
- Importance: Choosing the correct protection board and applying it appropriately is vital to the longevity your batteries.
9.6Exceptional
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4
DKARDUDKARDU 2 pcs 5S 15A Charger Protection Board 18V 21V 18650 Li-ion Lithium Battery BMS Protection PCB Board 18650 Charger Protection Board with Nickel Strip
Main highlights- Multiple protection: Over-discharge protection, overcurrent protection, overcharge protection, Short circuit protection.Disconnect load self-recovery.
- High precision: High-accuracy voltage detection circuit, fine workmanship and durable.
- Features: Low internal resistance, high power MOS. MOS transistor can control the battery charge and discharge, low standby current consumption.
- Applications: Use for variety of capacities and various shapes 3.7V lithium batteries,Massager battery pack, LED light backup power supply, solar street light battery pack, monitor standby power supply, etc.
- Advantages: High charge and discharge current, Compact size and lightweight.
9.5Excellent
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5
Atnsinc5S 21V 100A BMS Li-ion Lithium Battery Protection Board Circuit Li-Polymer Balance Charging Module for 3.7V LCO Battery Packs (5S 21V)
Main highlights- The 5s protection board is in common use lithium battery protection board (you can adjust for how many strings to be used). High Quality, Specified chip, fine workmanship and durable, stable performance.
- Package includes:1 x5S 21V 100A BMS Li-ion Lithium Battery Protection Circuit Board
- Multiple Protection:Support disconnection protection, over-current protection, over discharge protection, overcharge protection, with balance, etc.
- LOW STANDBY CURRENT: MOS transistor can control the battery charge and discharge, low standby current consumption.Applications: It can use for LMO.Ternary lithium battery.LCO(3.7V)battery packs etc.
- Common use for “same port” and “different port”, the protection board uses 15 high-power of ultra-low resistance MOS tube (discharge of 8, charging of 7), in the same port mode can support the discharge current 60A, charging current 60A; different port mode discharge current 80A, charging current 60A.
9.3Excellent
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6
ANMBESTAnmbest 5S 18V 21V 15A 18650 Charger PCB BMS Protection Board, Li-ion Lithium Battery Charger Lipo Cell Module with 6-core Wire
Main highlights- Short circuit protection/Over current protection/Overload/Over discharge protection: disconnect load self-recovery.
- MULTIPLE PPROTECTION: Over-discharge protection, overcurrent protection, overcharge protection; Short circuit protection; High charge and discharge current; Compact size and lightweight.
- Low internal resistance, high power MOS. MOS transistor can control the battery charge and discharge, low standby current consumption.
- High-accuracy voltage detection circuit, fine workmanship and durable.
- Applications: Use for variety of capacities and various shapes 3.7V lithium batteries,Massager battery pack, LED light backup power supply, solar street light battery pack, monitor standby power supply, etc.
9.1Excellent
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7
QINIZX5S 18V 21V 1.2A Li-ion Lipo Lifepo4 LFP Battery Active Equalizer BMS Balancer Inductive Balance Lithium Battery Energy Transfer Board (5S)
Main highlights- Voltage balance accuracy: 30mV (typical value) between adjacent voltages; Balance current: 0.1V
0.2V, balanced current 1.0A (max 1.2A); Under-voltage protection dormant voltage: The adjacent voltage difference is less than 0.03V and enters dormant state, Sleep current 10uA. - Tips: The equalization board is not a BMS protection board, it is an auxiliary to the protection board, so no matter how bad the battery you use to test, it can be used, But it has no overvoltage/overdischarge protection function. Overvoltage/overdischarge is the function of the BMS protection board. If voltage protection is required, it is best to use it in parallel with the BMS protection board.
- NOTE: Only can use for 5s battery-packs, and Not recommended to use poor quality battery pack to test. The indicator light will flash and report an error. Before connecting the equalization board, be sure to check whether each battery is wired correctly (Measure whether the voltage of each battery string is correct), and do a good job of insulation. otherwise it will short-circuit and burn the board.
- Balance method: Detect that the voltage difference between adjacent batteries is greater than 0.1V to trigger the start of equalization, and the adjacent battery voltage difference is less than 0.03V to stop working. (Tips: The inductance equalization board needs to be charged/discharged many times before the voltage equalization can achieve a better effect.)
- Applicable battery type: NCM(Li-ion)/LFP, NOT support LTO; Single voltage working range: 3.0V-4.2V; Suggested battery capacity: below 30AH, If more than 30AH, pls search Capacitor Faster Whole Group Balancer " B096NLHXPF " to purchase.PCB size about: 2.08x2.04x0.31inch; Indicator light: LED on, balance in progress; LED off, balance ends; LED flashing: battery drop string indicator/circuit failure.
9.0Excellent
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- Voltage balance accuracy: 30mV (typical value) between adjacent voltages; Balance current: 0.1V
8
ACEIRMCACEIRMC 2pcs BMS 5S 21V 18650 Li-ion Lithium Battery Protection Circuit Charging Board Module PCM Polymer Lipo Cell PCB (5S BMS 25A 21V)
Main highlights- This protection board adopts mature protection circuit, special IC, imported high current ultra low internal resistance MOS (single MOS internal resistance as low as 3 milliohms), and has perfect and stable charging and discharging protection functions.
- Single Cell overcharge protect voltage: 4.23 - 4.28V;Single Cell overcharge rotect recover voltage: 4.08 - 4.18;Overcharge protect delay: 0.5 - 1.5S;Single Cell over-discharge protect voltage: 2.72 - 2.88V;Single Cell over-discharge rotect recover voltage: 2.9 - 3.1V;
- Overcharge protect current: 60A;Over-discharge protect current: 60A;Over-discharge protectdelay: 0.5 - 1.5S;
- Charging voltage : 12.6V for 3S BMS board,16.8V for 4S BMS board,21V for 5S BMS board.
- Before installing the protection board, the battery must be matched well (the voltage difference between each battery is not higher than 0.05V, the internal resistance is not more than 5mΩ, the difference of the capacitance is less than 30mAh), the better the battery consistency, the longer the battery life, and the best performance of the protection board.
8.8Very Good
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9
QCCANQCCAN 3pcs 5S 15A 18V 21V Lithium Battery Protection Board, 18650 Charger Cell PCB BMS Protection Board Module for Li-ion Battery Cell Pack with Cable
Main highlights- Package includes:3 x 5S 15A Lithium Battery Protection Board+3 x Wire
- Notice:Please strictly according to the diagram wiring to avoid possible damage to the chip.(Connect wires refer to the "wiring diagram"(NO.5 picture). After connection, it need to charge activation first, then will have the output.
- Multiple Protection (Short circuit/Over-current/overcharge/Over-discharge): After disconnecting load will auto recovery.
- High Quality, High-accuracy voltage detection circuit, fine workmanship and durable, equipped with battery core balancing function,low standby current, low power consumption.
- Applications: It is used for 5 series 3.7V Li-ion batteries, massager battery pack, LED light backup power supply, solar street light battery pack, monitor standby power supply and so on.
8.7Very Good
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10
PhoncooBattery Charging Protection Board 5S 18 21V 20A Li-Ion Lithium Battery Pack Protection Circuit Board BMS Module for Power Tools
8.5Good
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