Top 10 4S Li-ion BMS – Power Converters

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1. HiLetgo

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HiLetgo 14.8V 4S 30A 18650 Li-ion Lithium Battery BMS PCB Integrated Circuits Protection Board Cell Balance

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HiLetgo #ad - High-accuracy voltage detection circuit, fine workmanship and durable. 14. 8v 4s 30a 18650 li-ion lithium battery bms PCB Integrated Circuits Protection Board Cell Balance. Main function: over charge protection, over current protection function, short circuit protection function, over discharge protection function, balance. Working current: 30a. Charging voltage: 16. 8v-18v, the best is 17v. Size:56*48*4mm.
BrandHiLetgo #ad
ManufacturerHiLetgo #ad
Part Number3-01-1548

2. AOICRIE

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AOICRIE 4S 20A 14.8V Li-ion Lithium 18650 Battery BMS PCM Protection PCB Board Module 16.8V Overcharge Over Discharge Short Circuit Protection, for Lithium LicoO2 Limn2O4 18650 LI Battery

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AOICRIE #ad - Magnification formula: 1c rate battery, 2000 capacity equals 2AH*3=6A upper limit working current. The power range described applies to the following products: low power inverters, massager battery packs, monitoring backup power supplies, electronics, solar street light battery packs, LED light backup power supplies, and other products.

The protection board measures 35*35*3. 0mm, 2000 capacity equals 2ah*1=2a upper limit working current. High-accuracy voltage detection circuit; terminal of the charger using high voltage device; low standby current consumption Built-in three-stage over-current detection circuit over-current 1, over-current 2, or load short circuit;MOS transistor can control the battery charge and discharge;. 3c rate battery, and the components are s-8254aa protection chip and D403*4 pieces,Note : For discharge products above 3A, the discharge rate of the battery should be more than 3C.

This protection board can not be used for lithium iron phosphate battery, electric bicycle battery pack, baby car battery, hand drill battery pack, 775 4A and above motor, xenon lamp, electric fish battery pack, 1W fisheye LED light. Over charge voltage:4. 25-4. 35v±005v, this situation can not be used for a long time, the battery rate is not applicable, Over Discharge Voltage: 2.3-3.
BrandAOICRIE #ad
ManufacturerAOICRIE #ad
Part NumberAOICRIE

3. DEVMO

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DEVMO 2PCS 4S 14.8V 30A BMS Protection PCB Cell Board Li-ion Lithium 18650 Balance

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DEVMO #ad - High charge and discharge current; Compact size and lightweight. For connecting cables, use copper wire over 3 square millimeters, the shorter the better can not use nickel plate!!! . Highlight: over-discharge protection, overcurrent protection, overcharge protection. High-accuracy voltage detection circuit, fine workmanship and durable. Mos transistor can control the battery charge and discharge, low standby current consumption.
BrandDEVMO #ad
ManufacturerDEVMO #ad

4. ALAMSCN

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ALAMSCN 4S 30A 14.8V BMS PCB Integrated Circuits Protection Board for 3.7V 18650 Lithium Li-ion Battery Cell Balance with Cable Pack of 3

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ALAMSCN #ad - Applications: use for variety of capacities and various shapes 3. 7v lithium batteries, solar street light battery pack, Massager battery pack, monitor standby power supply, LED light backup power supply, etc.

The battery heats up during use, the battery cannot be used for a long time, the battery rate is not applicable. Multiple protection: over current protection function, band balance. In this case, that is, and the battery will be damaged quickly. With balance: Increase battery life, safety and stability. Over charge protection, over discharge protection function and short circuit protection. 4s 16. 8v 30a lithium battery protection board comes with recovery function-AUTO Recovery. Note: for products with a current above 3a, the battery discharge rate must be above 3C.
BrandALAMSCN #ad
ManufacturerALAMSCN #ad
Height0.39 Inches
Length0.39 Inches
Weight0.04 Pounds
Width0.39 Inches
Part NumberAL12418

5. daier

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Daier 4S 100A 12.8V LiFePO4 14.8V Li-ion Lithium High Power Supply BMS Protect Board

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daier #ad - Short circuit protection: protection, delay self recovery. Overshoot voltage range: 4. 28v ± 005v over voltage range: 2. 5v ± 008v. Four series of 12. 8v 14. 8v inverter with high current 100A, four series of 3. 2v lithium iron phosphate battery protection plate, four series of 3. 7v lithium battery protection plate with balanced charge. Upper limit working current: 100A pay attention to heat dissipation Upper limit instantaneous current: 120A. Note: 3a discharge above the current point, the battery discharge rate of 3C or more.
Branddaier #ad
Manufacturerdaier #ad
Part NumberE1103

6. AITRIP

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AITRIP 3 pcs 18650 Li-ion Lithium Battery Protection Board 3S 25A 12.6V/4S 16.8V/5S 21V BMS Charging Module PCM Polymer Lipo Cell PCB Anti-Overcharge/Over-Discharg 4S BMS 25A 16.8V

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AITRIP #ad - Charging current: 25A;Discharging current: 25A;. Single cell overcharge protect voltage: 4. 23 - 4. 28v;single cell overcharge rotect recover voltage: 4.

08 - 4. 18;overcharge protect delay: 05 - 1. 5s;single cell over-discharge protect voltage: 2. 72 - 2. 88v;single cell over-discharge rotect recover voltage: 2. 9 - 3. 1v;. Charging voltage : 12. 6v for 3s bms board, 16. 8v for 4s bms board, 21v for 5S BMS board. Overcharge protect current: 60a;over-discharge protect current: 60A;Over-discharge protectdelay: 05 - 1. 5s;. Battery has superior quality with protecting circuit to prevent overcharge, over-voltage, and short circuit, over-discharge, extend life.
BrandAITRIP #ad
ManufacturerAITRIP #ad

7. ANMBEST

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Anmbest Enhanced 4S 16.8V 40A 18650 Charger PCB BMS Protection Board Li-ion Lithium Battery Charger Lipo Cell Module for Drill Motor with Balancer

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ANMBEST #ad - For connecting cables, or six 10c-15c power batteries ordinary 18650 battery can not start the drill!! Recommended power battery models: SONY VTC4, use copper wire over 3 square millimeters, VTC5A, VTC4A, the shorter the better can not use nickel plate!!!.

Suitable for lithium batteries with nominal voltage of 3. 7v and full voltage of 4. 2v including 18650, polymer lithium batteries, 26650, no size limit. High-accuracy voltage detection circuit, fine workmanship and durable. Mos transistor can control the battery charge and discharge, low standby current consumption.

Applications: suitable for electric drill with starting current below 80A and power below 135W. Conditions for starting the drill: to successful starting the drill requires three 15c-20c power batteries, vtc6. Highlight: over-discharge protection, overcurrent protection, overcharge protection; High charge and discharge current; Compact size and lightweight.
BrandANMBEST #ad
ManufacturerAnmbest #ad
Part NumberAnmbest_MD145

8. Atnsinc

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2Pack Enhanced 4S 40A 16.8V Li-ion Lithium Battery Protection Board PCB BMS Charger Protection Circuit Balance Charging Module for Drill Motor Motorcycle Battery 4S 40A

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Atnsinc #ad - Low standby current: mOS transistor can control the battery charge and discharge, low standby current consumption. Applications:it is suitable for lithium batteries with nominal voltage of 3. 7v and full voltage of 4.

2v including 18650, 26650, no size limit. Besides, polymer lithium batteries, it can use for electric drill with starting current below 80A and power below 135W. About connecting cables, it requires 3pcs15C-20C power batteries, VTC4A, VTC5A, and can not use nickel plate!. Multiple protections: Over-discharge protection, overcurrent protection, overcharge protection; High charge and discharge current.

If you want to start the drill successfully, we suggest using more than 3 square millimeters copper wire, or 6pcs10c-15c power batteries note: ordinary 18650 battery can not start the drill!! Recommended power battery models: SONY VTC4, VTC6. High quality; compact size and lightweight;High-accuracy voltage detection circuit; fine workmanship and durable; stable performance.
BrandAtnsinc #ad
ManufacturerAtnsinc #ad
Weight0.04 Pounds
Part Number19075

9. DALY

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DALY BMS 4S 12V 40A Li-ion Battery Protection Module PCB Protection Board with Balance Leads BMS for 18650 Battery Pack 12V

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DALY #ad - Temperature protection-low temperature 0℃ battery protection and high temperature 70℃ discharging battery protection. Quality guarantee- iso/ fcc/ rohs/ psE/ CE APPROVED.

Shipping time--you can usually receive the package within 9-14 days from dalyelec, China. Tracking information available. Only during labor daymay 1-3, national dayoctober 1-5 and Spring FestivalFeb 9-18, 2021 need most extra 3-10 days. Over-charge over-discharge protection-18650 Li-ion battery pack will stop charge when its voltage reaches 4. 25v and stop discharge when its voltage reaches 2. 7v. Over current protection-18650 lifepo4 battery pack will stop charging when current over 26AAMP and will stop discharging when current over 120AAMP.
BrandDALY #ad
ManufacturerDongguan Daly Electronics Co., Ltd. #ad
Height0.35 Inches
Length2.95 Inches
Weight0.23 Pounds
Width1.89 Inches

10. ANMBEST

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Anmbest 2PCS 4S 14.4V 14.8V 16.8V 5A 18650 Charger PCB BMS Protection Board for Li-ion Lithium Battery Cell

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ANMBEST #ad - High-accuracy, fine workmanship and durable, highly durABLE: High-accuracy voltage detection circuit, Effective life greater than 50000 hours. Widely applications: use for variety of capacities and various shapes 3. 7v lithium batteries, led light backup power supply, solar street light battery pack, Massager battery pack, monitor standby power supply, etc.

Low standby current: mOS transistor can control the battery charge and discharge, low standby current consumption. Otherwise it will cause damage to the chip. Attention: strictly according to the diagram wiring: b+: connected battery positive, b-: connect to battery negative end, B1: the connect point between battery 1 and battery 2, B2: connect the point between battery2 and battery 3, P+: connection charge / discharge positive, B3: Connect the point between battery 3 and battery 4, P-: connection charge / discharge negative.

Multiple protection: over-discharge protection, overcharge protection, short circuit protection; A combination of 4 safety features that work together to provide ultimate protection for your devices, overcurrent protection, your chargers and most importantly:you. Do not mix the good battery and poor battery to use.
BrandANMBEST #ad
ManufacturerANMBEST #ad
Part NumberAnmbest_MD98
ModelAnmbest_MD98