7.4V Li-Polymer Battery
The 7.4V lithium polymer battery is a rechargeable battery commonly used in a variety of devices. Here’s a basic overview:
- Nominal Voltage: 7.4V
- Charging Voltage: 8.4V
- Cut-off Voltage: 6V
Composition: Typically consists of two battery cells connected in series (2S configuration), with each cell having a nominal voltage of 3.7V.
Applications:
- Medical equipment
- Remote-controlled vehicles
- Portable devices
2 Cells Series
2 lipo cells are consistant at voltage, capacity and resistance.
Lightweight
Lighter in weight, making them suitable for a wide range of applications.
Flexible in Shape & Size
7.4V polymer battery can be customized to meet various capacity and size requirements.
High Discharge Rate
General discharge rates up to 3.0C, 5.0C, and 10.0C.
7.4V li-polymer battery products
We offer a wide range of over 200 lithium polymer cell models with capacities from 50mAh to 5000mAh. Due to the high consistency of our cells, we can reliably assemble 7.4V lithium polymer (2S) battery packs.
We provide a variety of 7.4V 2S lithium rechargeable pouch battery models. Please feel free to contact us for specific requirements or custom options.
402050 7.4V 350mAh Battery
Nominal voltage: 7.4V
Nominal capacity: 350mAh
Rated energy: 2.59Wh
Thickness: ≤8mm
Widness: ≤20.0mm
Length: ≤50.0mm
502535 7.4V 400mAh Battery
Nominal voltage: 7.4V
Nominal capacity: 400mAh
Rated energy: 2.96Wh
Thickness: ≤10.0mm
Widness: ≤25.0mm
Length: ≤35.0mm
702030 7.4V 450mAh Battery
Nominal voltage: 7.4V
Nominal capacity: 450mAh
Rated energy: 3.33Wh
Thickness: ≤7.0mm
Widness: ≤20.0mm
Length: ≤30.0mm
603040 7.4V 900mAh Battery
Nominal voltage: 7.4V
Nominal capacity: 900mAh
Rated energy: 6.66Wh
Thickness: ≤12.0mm
Widness: ≤30.0mm
Length: ≤40.0mm
602248 7.4V 600mAh Battery
Nominal voltage: 7.4V
Nominal capacity: 600mAh
Rated energy: 4.44Wh
Thickness: ≤8mm
Widness: ≤20.0mm
Length: ≤50.0mm
523450 7.4V 1000mAh Battery
Nominal voltage: 7.4V
Nominal capacity: 1000mAh
Rated energy: 7.4Wh
Thickness: ≤10.4.0mm
Widness: ≤34.0mm
Length: ≤50.0mm
202065 7.4V 1350mAh Battery
Nominal voltage: 7.4V
Nominal capacity: 1350mAh
Rated energy: 9.99Wh
Thickness: ≤40.0mm
Widness: ≤20.0mm
Length: ≤65.0mm
103763 7.4V 2800mAh Battery
Nominal voltage: 7.4V
Nominal capacity: 2800mAh
Rated energy: 20.72Wh
Thickness: ≤20.0mm
Widness: ≤37.0mm
Length: ≤63.0mm
705568 7.4V 3200mAh Battery
Nominal voltage: 7.4V
Nominal capacity: 3200mAh
Rated energy: 23.68Wh
Thickness: ≤14mm
Widness: ≤55.0mm
Length: ≤68.0mm
924565 7.4V 3500mAh Battery
Nominal voltage: 7.4V
Nominal capacity: 3500mAh
Rated energy: 25.9Wh
Thickness: ≤18.4mm
Widness: ≤45.0mm
Length: ≤65.0mm
805080 7.4V 4000mAh Battery
Nominal voltage: 7.4V
Nominal capacity: 4000mAh
Rated energy: 29.6Wh
Thickness: ≤16.0mm
Widness: ≤50.0mm
Length: ≤80.0mm
804046 7.4V 1500mAh Battery
Nominal voltage: 7.4V
Nominal capacity: 1500mAh
Rated energy: 11.1Wh
Thickness: ≤16.0mm
Widness: ≤40.0mm
Length: ≤46.0mm
7.4V Lipo Battery Terminals
7.4V LiPo batteries utilize a variety of connectors designed for specific applications. Here are some common types and their characteristics:
JST-XH Connector:
- Commonly used for balance charging on 7.4V (2S) LiPo batteries.
- Typically comes in 2-pin or 3-pin configurations.
XT30 Connector:
- Widely used for main power connections in RC models and drones.
- Capable of handling high current.
Tamiya Connector:
- Commonly found in RC cars and larger models.
- Commonly found in RC cars and larger models.
JST-PH Connector:
- Used in smaller devices like micro drones.
- Used in smaller devices like micro drones.
JST XH Series:
- XHP-2 (2-pin) and XHP-3 (3-pin) are reliable connectors available in 1.54mm, 2.0mm, 2.5mm, and 2.54mm pitch (pitch refers to the distance between the two metal contacts).
7.4V li-ion polymer battery model lists
As a leading Chinese lithium battery manufacturer, we specialize in custom tailored 7.4V polymer lithium-ion batteries to suit a wide range of applications. Whether you require low-temperature, high-temperature, or high-discharge rate batteries, we can meet your specific needs. Please provide your requirements and operating environment for your 7.2V polymer battery, and we will offer a comprehensive solution.
Model | Voltage (V) | Capacity (mAh) | Dimension (Thick*Width*Length) (mm) | Lifespan (25℃,0.5C,80%DOD) | Weight (Kg) | Protection Function | Know More |
|---|---|---|---|---|---|---|---|
HYT402050 | 7.4 | 350 | 8*20*50 | >500 | 13 | Yes | |
HYT502535 | 7.4 | 400 | 10*25*35 | >500 | 14 | Yes | |
HYT702030 | 7.4 | 450 | 14*20*30 | >500 | 22 | Yes | |
HYT603030 | 7.4 | 500 | 12*30*30 | >500 | 22 | Yes | |
HYT602248 | 7.4 | 600 | 6*22*48 | >500 | 23 | Yes | |
HYT603040 | 7.4 | 900 | 12*30*40 | >500 | 40 | Yes | |
HYT523450 | 7.4 | 1000 | 10.4*34*50 | >500 | 46 | Yes | |
HYT202065 | 7.4 | 1350 | 4*20*65 | >500 | 50 | Yes | |
HYT103763 | 7.4 | 2800 | 20**37*65 | >500 | 76 | Yes | |
HYT705568 | 7.4 | 3200 | 14*55*68 | >500 | 78 | Yes | |
HYT924565 | 7.4 | 3500 | 18*45*65 | >500 | 84 | Yes | |
HYT805080 | 7.4 | 4000 | 16*50*80 | >500 | 120 | Yes | |
HYT804046 | 7.4 | 1500 | 16*40*46 | >500 | 55 | Yes | |
KHT904060 | 7.4 | 2200 | 18*40*60 | >500 | 65 | Yes | |
HYT105050 | 7.4 | 3000 | 20*50*50 | >500 | 90 | Yes |
China Li-polymer Battery Factory
- Minimum Order Quantity: 1,000 pieces per model.
- All orders come with the necessary certificates.
- Hongyitai assembly any 7.4V li-polymer battery pack based on your requests.
Factors to Consider When Choosing a 7.4V Lithium Polymer Battery Charger
When selecting a charger for your 7.4V LiPo battery, several key factors should be taken into account:
Voltage and Capacity: Ensure the charger is compatible with both the voltage and capacity of your LiPo battery. A 7.4V battery typically requires a charging voltage of 8.4V to 8.56V.
Charging Modes: Opt for a charger that offers multiple charging modes, such as balance charging and fast charging. This allows you to select the appropriate mode based on the battery’s current condition.
Brand Reputation: Choose a reputable brand known for producing high-quality chargers. If you’re unsure about which charger to select, feel free to contact us for recommendations.
Charging Speed: The charging speed of LiPo battery chargers is typically measured in amperes (amps). For faster charging, select a charger with a higher output current. For example, a 1C charge rate would fully charge the battery in approximately 57 minutes.
Safety Features: Choose a charger with built-in safety features like overcharge protection, short circuit protection, and over-temperature protection. These features help prevent damage to the LiPo battery and reduce the risk of fire or explosion.
All about charging 7.4v lipo battery
Charging a 7.4V LiPo battery requires special attention to ensure safety and maximize battery life. Here are some crucial steps and considerations:
1. Use a Suitable Charger
- Dedicated charger: Use a charger specifically designed for 7.4V LiPo batteries. Avoid using chargers designed for other battery chemistries.
- Balance charger: A balance charger ensures that each cell within the battery is charged evenly, which is critical for optimal performance and longevity.
2. Charging Modes and Parameters
- Constant Current/Constant Voltage (CC/CV): The charger initially charges at a constant current (CC) until the battery voltage reaches 8.4V, then switches to a constant voltage (CV) mode until the current drops below 0.02C.
- Charging current: A standard charging current is 0.5C (where C is the battery’s capacity in ampere-hours). For faster charging, a 1.0C rate can be used. Higher rates are possible if the battery supports them.
3. Connection and Settings
- Correct connections: Use the main and balance connectors on the charger, ensuring the positive and negative terminals are connected correctly.
- Set charging parameters: Configure the charger according to the battery’s specifications, including voltage, capacity, and charging rate.
4. Charging Process
- Initiate charging: Start the charger and monitor the charging process. A typical 7.4V LiPo battery takes approximately 1-2 hours to charge, depending on its capacity.
- Monitor charging: Keep an eye on the charger during the process to ensure the battery is charging correctly and there are no issues.
- Disconnect upon completion: Once the battery is fully charged, immediately disconnect it from the charger to prevent overcharging.
Why select Hongyitai as lithium ion polymer battery supplier
- High quality: All our 3.7V li-polymer battery cells are consistent. Small differences in voltage, internal resistance, and capacity.
- Customaztion: we custom batteries flexible in size, capacity and performance.
- Certification: we can provide necessary certificates as you need.
- Competitive prices: assist customers in reducing costs while ensuring quality.
- Rich experience: Over 10 years of indutry experience, able to meet various application needs.
Hongyitai 7.4V li-polymer battery production process
The following is a simplified description of our lithium polymer battery manufacturing process:
1. Cells Prepare
Select 2 cell batteries are consistent. The voltage difference should be ≤10mV. The internal resistance difference should be ≤ 5mΩ. Capacity difference should be ≤ 20mAh.
2. Solder PCM
Weld the protective board and battery cell together. First weld the positive electrode, then weld the negative electrode.
3. Isolation
Use double-sided tape to secure and ensure that the battery does not short circuit.
4. Connect wires
Connect the wires to the protective circuit board, ensuring that the positive and negative poles are connected correctly.
5. Insulated PVC heat shrinkable tube
Use PVC heat shrink tubing to wrap the entire lithium battery to prevent short circuits.
FAQs for 7.4 volt li-polymer battery
A 7.4V lithium polymer battery is typically composed of 2 3.7V cells connected in series, also known as a 2S configuration.
When fully charged, a 7.4V lithium polymer battery should reach a voltage of 8.4V. Each individual cell has a charging voltage of 4.2V.
To protect the battery, the discharge cutoff voltage is usually around 6V, or 3V per cell.
The standard charging current is typically 0.5C, where C represents the battery's capacity in ampere-hours. For example, for a 2200mAh battery, the 0.5C charging current would be 1.1A.
Under proper use and maintenance, a 7.4V lithium polymer battery can typically achieve over 500 charge-discharge cycles.
