10 Best Bms 4s for 3s In The Us - Black Friday 2024
Best Choice1
DALYDALY Smart BMS 4S 12V 100A with WiFi Module and CAN 485 Communication Protection Board for Remote Monitoring of LifePO4 Lithium Battery Pack
Main highlights- 【Smart BMS】With the WiFi module, lithium batteries can be remotely monitored through the Internet, regardless of the distance.When the BMS detects any abnormality in the battery pack, it will send alert via the smartphone app.
- 【Quality Guarantee】We provide 24-hour one-on-one customer service and technical support.If you have any questions,please feel free to contact us.--- ISO/ FCC/ RoHS/ PSE/ CE APPROVED
- 【New Upgrade】Smaller size; Parallel protection; Pre-charging function; 100mA passive equalization current; Low temperature rise; Working condition indicator;Consistent Chg/Dischg cuurrent.
- 【Multiple Protection】Overcharge Protection; Overdischarge Protection; Overcurrent Protection; Short circuit Protection; Temperature Protection;Waterproof Protection.
- 【DALY BMS】Multiple communication functions+ expansion function ports,CAN, RS485, dual UART communication interfaces,rich expansion applications.If you need Touch Screen,active balancer, parallel module or other accessories, please contact online customer service.
9.8Exceptional
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Value for Money2
WENKESAMZIANT Smart BMS 3-4S 110A 12V Peak 330A Support Li-ion LifePo4 LTO Built-in Bluetooth Band Balancing Function
Main highlights- 【Temperature Sensor】2pcs External
- 【Multiple Protection】Overcharge Protection; Overdischarge Protection; Overcurrent Protection; Short circuit Protection; Temperature Protection.
- 【Communication Function】UART
- 【Balance current】100mA
- 【Application Field】Power Battery,E-Bike,Electric Motorcycle,Electric Scooter,so on.
- 【Applicable Battery Type】Li-ion LifePo4 Battery
- Product Introduction Size:140*72*16mm Applicable Battery Type: Li-ion LifePo4 LTO Battery. Support strings number:Automatically identify 3S-4S Package Included:BMS with Module with Bluetooth*Balance Wires
9.7Exceptional
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3
Dweii3pcs Type C BMS 2S 3S 4S 1A 2A 4A 18650 Lithium Battery Charger Board USB C Step-up Boost Module for Li-Po Polymer Power Bank(3pcs 3S 4A)
Main highlights- Size :39mm x 18mm x 6.3mm;Weight : 5g; Battery Overvoltage Protection
- Protection for Battery Voltage Being Low than Input and Short Battery Good adaptability to Input Supply with Limited Driving Capability
- Led indicator : ''CR'' LED is charge status indicator ''OK'' LED is fully charged OR Constant voltage mode;
- Input Type-C 5V; Operating Temperature－40℃ to ＋85℃;
- 3PCS Multi-Cell 2S 3S 4S Type-C to 8.4V 12.6V 16.8V Step-Up Boost LiPo Polymer Li-Ion Charger 7.4V 11.1V 14.8V 18650 Lithium Battery (3S-4A)
9.6Exceptional
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4
QINIZX11% Off3S 4S 12V 5A Battery Active Equalizer BMS Balancer Lipo Li-ion LFP LiFePO4 Lithium Battery Balance Active Energy Transfer Equalization Module Faster Whole Group Capacitor Balancer PCB
Why we love it
This product is voltage compatible with NCM Ternary polymer lithium batteries Li ion and lithium iron phosphate batteries LiFePO4 .
The manufacturer has put this product through extensive testing to ensure its long lasting and effective performance.
This product has a standby power consumption of less than 0.1mA, making it very power efficient.
9.5Excellent
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5
AITIAO2PCS Type C BMS 2S 3S 4S 1A 2A 4A 18650 Lithium Battery Charger Board USB C Step-up Boost Module for Li-Po Polymer Power Bank (3S 4A)
Main highlights- [3-Cell(3S) 12.6V Version] Input voltage : DC 3-6V(Recommend DC 3.7V 5V); Input current : 1A(1A Version);2A(2A Version);4A(4A Version); Charging voltage : 12.6V; Charging current : 0.37A(1A Version);0.74A(2A Version);1.48A(4A Version)
- Led indicator : "CR" LED is charge status indicator; "OK" LED is fully charged OR Constant voltage mode. Note: For the 4A version, unless your TYPE-C power supply canprovide 4A current,it is not recommended that you USE THE 4A VERSION.
- High Safety Performance: Battery overvoltage protection; Protection for Battery Voltage Being Low than Input and Short Battery.
- Applications: The Step-Up Power module can be widely used in PDA, MP3 Players, MP4 Players, Digital Cameras,Bluetooth Applications,Game Players,Notebook,Mobile phone, Solar charging, Audio equipment,Portable Devices,POS , Electric Fan, and TYPE-C charging equipment etc.
- 2PCS 3S 4A Type-C USB C Step-Up Lithium Li-ion Battery Charging Protection Board Boost Charging Module DC 8.4V 12.6V 16.8V
9.4Excellent
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6
AITIAOAITIAO 4PCS 3S 60A 11.1V 12V 12.6V 18650 Lithium Battery Charger PCB BMS Protection Board with Balance Li-ion Lithium Battery Charger Lipo Cell Module for Drill Motor
Main highlights- This product is used to charge/discharge three groups of lithium batteries in series, and each group can connect multiple lithium batteries in parallel.
- This product can be used in electric drills, sprayers, LED lights, low power reverse. Charge and discharge batteries of transformers and other products.
- During using the process, the heat dissipation conditions should be good. If the heat dissipation conditions are not good, please reduce the current usage and do not let the board has a noticeably hot feeling.
- During charging and discharging, it has overcharge protection, overdischarge protection, and overcurrent protection, short circuit protection.
- Charging voltage: DC 12.6V-13V; Continuous charging current 20A, continuous discharge current 40A, instantaneous current below 80A.
9.3Excellent
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7
heltec bmsHeltec Active Equalizer Balancer 5A 3S-21S 4S 6S 7S 8S 14S 16S 17S 20S 21S Lifepo4/Lipo/LTO Battery Energy Capacitor (3-4S 5A)
Main highlights- [Satisfactory Service]: We Provide 24-hour online service,If you encounter any problems, Please email SELLER SUPPORT (Not Amazon support), we will give you a perfect solution.
- [Protection switch]: With under-voltage sleep protection, the voltage will stop automatically when the voltage is lower than 3.0V, and the standby power consumption is less than 0.1mA.
- [Product Information]:Working voltage: 1.8V-4.5V，Suitable for ternary lithium, lithium iron phosphate, lithium titanate.Working principle, the capacitor fit transfers the charge mover, the equalization board is connected to the battery, and the equalization is started. The original new ultra-low internal resistance MOS, 2OZ copper thickness PCB，Equilibrium current 0-5.5A, the more balanced the battery, the smaller the current, with manual sleep switch, sleep current mode is less than 0.1mA, the balance voltage accuracy is within 5mv! The quiescent current is about 12 mA. It is recommended that the battery capacity is 60-300AH.
9.0Excellent
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8
QINIZX3S 4S 12V 5.5A Capacitor Active Equalizer Whole Group Balancer Lifepo4 LFP Lipo Li-ion Lto Lithium Active Battery Energy Transfer Equalization + Protective Case
Main highlights- Working Voltage: 2.7V-4.2V, suitable for NCM Ternary polymer lithium battery (Li-ion), lithium iron phosphate battery (LiFePO4), Not Fit Lithium Titanate). It can be used in parallel with BMS protection board. NOTE Tips: The default protective case is a kit, not assembled, the transparent acrylic case has a yellow protective film that can be peeled off.
- Working Principle: Flying capacitor transfer charge transporter, Balancer board is connected to the battery to start the balance work, using the original brand new ultra-low internal resistance MOS, 2OZ copper thickness PCB. Balance current 0-5.5A, the more balanced the battery current is Small, reserved for the dormant switch wiring position, the dormant power-off mode working current is less than 0.1mA, and the balance voltage accuracy is within 5mv!
- The Quiescent Current is about 12mA, and the battery capacity is recommended to be used between 30-300AH/Per Balancer. High-capacity batteries can be connected in parallel with multiple equalizers; With under-voltage sleep protection, only detecting the battery voltage of B1, the equalizer will automatically stop entering the sleep state when the B1 voltage is lower than 2.7V, and the standby power consumption is less than 0.1mA.
- RUN Pad: you can add a switch to control the balancer. Default short connect, let balancer working. if disconnect, it will not working. One LED indicator: It will always be on during normal operation, but it will not turn on when there is a problem or malfunction. Equipped with VH3.96 terminal by default, come with 1.31ft 18awg wire.
- NOTE: Before connect the balance cable to the balance board, be sure to check whether the connections of each section of the battery pack are correct, and do a good job of insulating the bottom of the board and the battery string connection terminals. Otherwise, it will short-circuit and burn the board. Tips: This balancer board is backward compatible by default. eg. If it is used for 3S, the last line B4+ is empty.
8.7Very Good
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9
Cywhrvzsf3S 4S 5A Active Equalizer Whole Group Balancer Lifepo4 Lipo Lto Lithium Active Battery Energy Transfer Equalization Capacitor + Test Board
Main highlights- [Satisfactory Service]: We Provide 24-hour online service,If you encounter any problems, Please email SELLER SUPPORT (Not Amazon support), we will give you a perfect solution.
- [Protection switch]: With sleep protection, when the voltage is lower than 3V, it will automatically stop and enter the sleep state to reduce the damage to the battery.
- [Product Information]: Before connecting the equalization board, check whether each piece of wiring is correct, insulation between the bottom board and the battery connection terminals is required to prevent burnout.Model:3S-4S Suitable : Lithium Iron Phosphate, NCM Ternary Polymer,(Not Fit Lithium Titanate) ,Voltage is 1.8 V-4.5V ,Suggest Battery Capacity: 60-300AH.
- [Original Design]:using the original ultra-low internal resistance MOS, 2OZ copper thickness PCB, equalizing current 0-5.5A, The more balanced the battery, the lower the current.
- [Capacitance Principle]: No external power supply is required,The working principle is Capacitor fit transfers the charge transporter, use the internal energy transfer of the battery to transfer and balance the entire battery pack.the equalization board can be connected to the battery to start the equalization work.
8.6Very Good
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10
DALYDALY BMS Li-ion 4S 12V 50A with Balance Wire and Temperature Sensor for 18650 Rated 3.7V Battery Charging and Discharging Protection(Standard BMS,50A)
Main highlights- [Packing List]3.7V Li-ion BMS*1,NTC sensor*1,Sampling cable*1,Instruction Manual*1.Quality Guarantee--- ISO/ FCC/ RoHS/ PSE/ CE APPROVED
- [Note] Standard BMS dosen't have communication functions. If you need smart BMS, active balancer, parallel module or other accessories, please contact online customer service.We offer 24-hour one-on-one customer service and lifetime technical support.
- [Easy to install]Easy to plug and unplug, which allows you to effortlessly create an electrical connection between the battery pack and the BMS.
- [Double Protection] Double protection by injection patent technology and patent shell.Waterproof,Dustproof,Shockproof and Anti-static;High-quality components, pressure-resistant and durable material, high acquisition accuracy.
- [DALY BMS]Overcurrent,Overcharge,Overdischarge,Short circuit, Temperature protection.DALY BMS maximizes optimizes the lithium battery performance, and extends the battery lifetime to a large extent.
8.5Good
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