2S 7.4V 8A Li-ion 18650 Lithium Battery Charger Protection Board

Specifications:

• Type: 2S (Two series) Lithium-ion Battery Protection Board
• Application: Designed for use with 7.4V (nominal) lithium-ion batteries (specifically, two 3.7V 18650 cells connected in series).

Electrical Specifications:

• Operating Voltage: 7.4V (Nominal)
• Charging Voltage: 8.4V (Full Charge Voltage for 2S configuration)
• Overcharge Protection:
  • Overcharge Detection Voltage: 4.25V ± 0.05V per cell
  • Overcharge Release Voltage: 4.15V ± 0.05V per cell
  • Overcharge Delay: 1.0 to 2.0 seconds
• Over-discharge Protection:
  • Over-discharge Detection Voltage: 2.5V ± 0.05V per cell
  • Over-discharge Release Voltage: 2.9V ± 0.1V per cell
  • Over-discharge Delay: 1.0 to 2.0 seconds
• Short Circuit Protection: Yes, automatic recovery
• Overcurrent Protection: Yes
  • Overcurrent Detection Current: 12A ± 3A
  • Protection Delay: 1.0 to 2.0 seconds
  • Release Condition: Automatic recovery when the load is removed
• Balancing Function: Some boards include cell balancing to ensure uniform charging of the 18650 cells.

Thermal & Environmental Specifications:

• Operating Temperature Range: -40°C to 85°C
• Storage Temperature: -40°C to 125°C
• Thermal Shutdown: Some protection boards may include thermal shutdown features to prevent overheating.

Features:

• Overcharge Protection: Automatically prevents the cells from overcharging.
• Over-discharge Protection: Automatically prevents the cells from discharging too much.
• Short Circuit Protection: Automatically cuts off the circuit in case of short circuits.
• Overcurrent Protection: Detects and cuts off high current surges.
• Cell Balancing: Ensures that both cells charge evenly to prolong the life of the battery pack.

Applications:

• Electric toys
• Power tools
• Solar energy systems
• Portable electronic devices (e.g., power banks, flashlights)

Notes:

• Always ensure proper wiring and insulation when installing to avoid accidental short circuits or damaging the battery cells.
• Use with appropriate 18650 lithium-ion cells (ensure matching capacity and voltage ratings).

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2S 7.4V 8A Li-ion 18650 Lithium Battery Charger Protection Board
darazsales

TP4056 Type C 18650 Battery Charger Board

Specifications

• Model Number: TP4056 Type-c
• Operating Temperature: Not Specified
• Dissipation Power: Not Specified
• Supply Voltage: 5V
• Condition: New
• Type: Voltage Regulator
• Brand Name: Elanzeme
• Origin: Mainland China
• Supply Voltage: 5V
• Dissipation Power: 1A

How to use:

1. 1. This shot the ball. The Type-C master and the +-pad of its side are the power input, and the 5V input voltage, B + lithium battery positive plate, and B-lithium battery negative electrode.
2. 2. OUT +, OUT – Take the load, such as moving the roll-off board to is negative or other load and Connect the battery to B +, B-, and insert the phone charger into the USB female seat, The red light is on charging, blue light is bright.
3. 3. When the input is input, the current is obtained from the power supply output.
4. 4. If no power is not connected, the current is obtained from the battery and the battery voltage is lower than 2. 5V, the output is automatically turned off.

Precautions:
1. When you first access the battery, you may have an output voltage output without voltage, you need to access the 5V charge and activate the protection circuit on the power input.
2. When powering with a mobile phone charger, you must output 1A or more, otherwise, it may not be charged normally.
3. The load on the OUT side should be disconnected when charging.

Note: The module only works with a USB to USB-C, it doesn’t support USB-C to USB-C charge

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TP4056 Type C 18650 Battery Charger Board
darazsales

Li-ion Lithium 18650 Battery Charger 12.6V 20A

Li-ion Lithium 18650 Battery Charger is a useful ….

Specification

• Product size: 59 * 20 * 3.4mm
• Product weight: 4.3g
• Charging voltage: 12.6V – 13.0V
• Continuous discharge current (upper limit): 20A (if the cooling environment is bad, please reduce the load current for use)
• Continuous charging current (upper limit): 10A
• Standard version: applicable to electric drills with starting current below 40A and power below 65W.
• Enhanced version: applicable to electric drills with starting current below 60A and power below 100W.

1: Three 15C-20C power batteries or six 10C-15C power batteries are required to successfully start the electric drill (ordinary 18650 cannot start the electric drill!!!).

2: Wiring 0V, 4.2V, 8.4V, 12.6V in strict accordance with the diagram, and do not intentionally short circuit.

3: When the load with brush motor is used, a non-polar capacitor (withstand voltage above 25V, capacity 10uF-100uF) must be connected in parallel at the positive and negative terminals of the motor to prevent the reverse peak voltage generated by the motor from interfering with the protection board or breaking through MOS tubes.

Note 4: When three groups of batteries are connected in series, please ensure that the voltages of each group of batteries are the same. If they are different, please fully charge each group of batteries separately and then use them in series… During the discharge test, the group of batteries with fast voltage drop is the poor battery.

For some customers with poor electronic foundation, please explain: Never mix good batteries with poor batteries! The capacity/internal resistance of the three batteries should be as close as possible! (The service effect of two good batteries one poor battery=the service effect of three poor batteries).

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3S 20A 12.6V Li-ion Lithium Battery 18650 Charger Protection Board BMS Module
lahiru Dhananjaya