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This product is a battery pack assembled using high-quality 18650 cylindrical lithium-ion cells, specifically configured as 3 series and 2 parallel (3S2P). The battery pack has a compact structure with dimensions of 19mm (width) x 68mm (height) x 112mm (length), and features high energy density and stable output. Its nominal capacity is 6400mAh and its nominal voltage is 11.1V, providing long-lasting and reliable power for various devices. The product integrates a smart protection board and is equipped with standard wiring and terminals for easy connection, achieving a perfect combination of safety and convenience. It is an ideal power solution for a variety of portable devices and projects.
Product Advantage
High Security: Built-in high-performance protection board provides multiple protections against overcharging, over-discharging, overcurrent, short circuits, and temperature fluctuations, effectively extending battery life and ensuring safe use.
Excellent Performance: Utilizes high-quality power/capacity type 18650 battery cells with low internal resistance and a stable discharge platform, providing continuous and reliable power output.
Long Lifespan: Excellent battery cell cycle performance, combined with the protection board's precise battery management, results in a longer battery pack lifespan.
Ready to Use: Assembly, welding, packaging, and testing are completed before shipment. The protection board and connecting terminals are pre-installed, eliminating the need for further processing by the user and simplifying wiring.
Robust Structure: Features a flame-retardant casing or heat-shrinkable film packaging, providing excellent insulation, shock resistance, and moderate dust and water resistance, enhancing overall durability.
Environmentally Friendly and Efficient: No memory effect, allowing for charging at any time, and meeting environmental requirements.
Technical Parameters
| Battery Cell Type： | Cylindrical 18650 Lithium-ion Cells |
| Configuration: | 3 Series 2 Parallel (3S2P) |
| Nominal Voltage: | 11.1V |
| Nominal Capacity: | 6400mAh (0.2C discharge) |
| Energy: | Approximately 71Wh |
| Charging Voltage: | 12.6V (±0.05V) |
| Discharge Cut-off Voltage: | 9.0V (controlled by protection board) |
| Standard Charging Current: | Recommended within 0.5C (approximately 3.2A) |
| Standard Discharge Current： | Recommended within 1C (approximately 6.4A) |
| Maximum Continuous Discharge Current: | Typically 10A-20A depending on cell specifications (please confirm based on the specific cell model) |
| Protection Functions: | Overcharge, over-discharge, overcurrent, short circuit, temperature protection |
| Interface Terminals: | Standard wires and common connectors (such as XT60, JST, etc., customizable) |
| Dimensions: | Approximately 19*68*112 mm (length x width x height, including protection board and wiring, dimensional tolerance ±2mm) |
| Operating Temperature: | Charging: 0°C ~ +45°C; Discharging: -20°C ~ +60°C (charging above 0°C is recommended) |
| Weight: | Approximately 350-450g (depending on packaging materials) |
| Storage Temperature： | -20°C ~ +45°C (long-term storage at half charge is recommended) |
Product Uses
This battery pack is widely used in medium-power devices requiring a stable and portable power source, such as:
Drones/UAVs: Providing power for aerial photography drones and agricultural drones.
Portable devices: High-end flashlights, powerful searchlights, and photography fill lights.
Power tools: Small electric drills, electric screwdrivers, and gardening tools.
Robots/Models: Competition-grade remote-controlled cars and boats, robotics projects, and STEM education kits.
Backup power supplies: Small outdoor speakers, mobile monitoring equipment, and emergency lighting systems.
Other electronic projects: DIY projects, experimental equipment power supplies, etc.
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Product Precautions
Charging Requirements: Only use the dedicated 11.1V/12.6V lithium battery balance charger. Using non-lithium battery chargers or directly connecting to a power adapter is strictly prohibited.
Prohibited Actions: Do not short-circuit the positive and negative terminals of the battery. Do not disassemble, puncture, crush, or incinerate the battery. Do not use or store the battery in environments exceeding the specified temperature range.
Usage and Storage: Avoid prolonged storage after complete discharge. If not used for an extended period, maintain the charge level at approximately 50%-70% and store in a cool, dry place.
Troubleshooting: If the battery swells, leaks, overheats, emits an odor, or experiences a significant decrease in performance, immediately stop using it and dispose of it properly.
Installation and Use: Ensure the battery is securely fixed during installation to prevent vibration and impact. Ensure correct wiring and good contact, and avoid wire abrasion.
Environmental Safety: Do not throw the battery into fire or water.
FAQ
Q1: Can this battery pack directly power my device?
A: Yes, as long as your device's rated operating voltage is within the battery pack's operating voltage range (approximately 12.6V-9V), and the power consumption does not exceed the battery's maximum continuous discharge capacity. Please be sure to check the device interface and polarity.
Q2: What is the voltage when the battery is fully charged? What is the voltage when it's empty?
A: When fully charged, the voltage at the protection board output is approximately 12.6V. When the voltage drops to approximately 9.0V-10.0V (specifically determined by the protection board settings), the protection board will cut off the output to protect the battery cells. This is considered the "empty" state, and the battery should be charged promptly.
Q3: How do I charge this battery?
A: You must use a matching "3-series lithium battery balance charger" (output voltage 12.6V). Connect the charger output to the battery pack's charging and discharging port. Do not use a regular mobile phone charger.
Q4: How do I calculate the runtime with a battery capacity of 6400mAh and a voltage of 11.1V?
A: To estimate the device's runtime, you can refer to the formula: Runtime (hours) ≈ Battery capacity (Ah) / Device operating current (A). For example, if the device's operating current is 1.2A, the theoretical runtime ≈ 6.4Ah / 1.2A ≈ 5.3 hours. The actual time is affected by the discharge rate, temperature, etc.
Q5: Can the batteries be connected in series or parallel to increase voltage or capacity?
A: It is strongly discouraged for users to connect multiple battery packs with built-in protection boards in series or parallel. If higher voltage or capacity is needed, a battery pack with the appropriate specifications should be customized during the design phase to ensure the protection circuit functions correctly.
Q6: Does the battery pack require maintenance?
A: Lithium battery packs are maintenance-free. However, it is recommended to regularly check the appearance and connecting wires, keeping them clean and dry. For long-term storage, perform a charge-discharge cycle every 3-6 months to maintain activity.
Q7: What are the requirements for transportation and disposal?
A: Transportation must comply with relevant dangerous goods regulations (e.g., air transport must meet UN38.3 test requirements). When disposing of the battery, please follow local regulations and hand it over to a professional battery recycling facility to protect the environment.
