loading
| Availability: | |
|---|---|
| Quantity: | |
Engineered specifically for precision equipment like water quality testing instruments, this 7.4V 5000mAh lithium-ion battery pack delivers uncompromising, stable DC power. Built around a 2-series, 1-parallel (2S1P) configuration using premium Tier-1 A-grade 21700 cylindrical cells, it offers a tangible density upgrade over standard 18650 packs. The exterior features a tightly shrunk, industrial-grade PVC wrap that feels solid in hand, protecting the meticulously spot-welded internal connections. Every unit integrates a sophisticated printed circuit board (PCB) to safeguard against overcharging, over-discharging, and short circuits. By eliminating the need for secondary soldering, this pre-wired power module allows engineers to integrate it directly into portable diagnostics, medical monitors, and environmental sensors. Every cell undergoes rigorous aging and thermal cycling tests to guarantee performance consistency across large-scale deployments, ensuring your field instruments remain powered during critical measurement tasks.
To meet the demanding operational requirements of modern analytical devices, this battery module combines advanced chemistry with intelligent management systems, ensuring your equipment performs reliably in the field.
Compact Power Density: Utilizing premium A-grade 21700 cylindrical cells, this module packs 5000mAh into a highly compact form factor. It delivers significantly longer runtime for portable water analyzers compared to older cell formats, allowing field technicians to complete more tests without swapping power sources.
Advanced BMS Smart Management: Beyond standard overcharge and short-circuit prevention, the built-in intelligent protection board ensures absolute operational safety. For complex equipment, we offer optional upgrades supporting RS232, RS485, and CAN Bus communication protocols, enabling precise, real-time monitoring of State of Charge (SOC) and State of Health (SOH).
Consistent Current Delivery: Engineered to handle continuous 10A discharge rates, the selected power cells effortlessly manage the sudden power spikes required by motorized pumps or heating elements in diagnostic tools, ensuring a rapid and stable power response without voltage drops.
Tailored OEM/ODM Flexibility: While the standard unit comes pre-installed with common wiring, we provide extensive customization capabilities. From specific wire gauges and specialized terminal connectors to custom hard-case enclosures, our engineering team adapts the physical dimensions and interfaces to match your exact structural requirements perfectly.
Certified Global Compliance: Designed with international trade in mind, these battery packs meet stringent global safety standards. Supported by UN38.3, UL, CE, RoHS, and MSDS certifications, they guarantee regulatory compliance, ensuring smooth cross-border logistics and absolute confidence for your end-users.
The following specifications detail the core electrical and physical characteristics of the 7.4V 2S1P battery pack. Each parameter is validated through a strict quality control regimen, including prolonged aging processes, extreme temperature exposure (-20°C to +60°C), and rigorous charge-discharge cycle testing. This uncompromising approach ensures that every unit delivered maintains strict performance consistency, crucial for sensitive instrumentation.
| Battery Cell Model | 21700 Cylindrical Lithium-ion Battery Cell |
| Configuration | 2 Series 1 Parallel (2S1P) |
| Nominal Voltage | 7.4V |
| Full Charge Voltage | 8.4V (±0.05V) |
| Cut-off Voltage | 5.0V - 6.0V (Controlled by protection board) |
| Nominal Capacity | 5000mAh (0.2C discharge) |
| Energy | Approximately 37Wh |
| Continuous Discharge Current | 10A (Maximum, depending on cell specifications) |
| Instantaneous Peak Current | Up to 15A (≤3 seconds, depending on cell specifications) |
| Standard Charging Current | 1.0A - 2.5A (0.2C-0.5C) |
| Charging Voltage | 8.4V (Constant Voltage Constant Current) |
| Charging Method | Recommended to use a dedicated 7.4V lithium battery charger |
| Internal Resistance | ≤80mΩ (Including protection board, typical value) |
| Cycle Life | ≥500 cycles (Charged and discharged under standard conditions to 80% of initial capacity) |
| Operating Temperature | Charging: 0°C ~ +45°C / Discharging: -20°C ~ +60°C |
| Storage Temperature | -20°C ~ +45°C (Recommended long-term storage at 30%-60% charge) |
| Protection Functions | Overcharge protection, over-discharge protection, overcurrent protection, short-circuit protection, temperature protection (some models) |
| Wiring Configuration | Standard wires and common terminals (such as XT60, JST, spade connectors, etc., subject to actual product) |
| Dimensions/Weight | Approximately 74mm (Length) * 43mm (Width) * 22mm (Height) / Approximately 180g (For reference only, varies depending on configuration) |
This highly adaptable 7.4V power source is specifically engineered to support a diverse array of medium-capacity, voltage-sensitive applications. Its durable construction and reliable discharge profile make it the preferred choice for engineers designing equipment for challenging environments.
Precision Analytical Instruments: Specifically optimized for water quality testing instruments, portable spectrophotometers, and environmental monitoring stations, providing clean, noise-free power for sensitive sensors.
Medical & Healthcare Devices: Reliable energy for mobile patient monitors, portable infusion pumps, and handheld diagnostic equipment where power failure is not an option.
Industrial IoT & Smart Sensors: Acting as a dependable primary or backup power source for remote data loggers, pipeline monitoring nodes, and automated agricultural sensors requiring long-term stability.
Professional Power Tools & Robotics: Driving the motors of compact electric screwdrivers, specialized engraving tools, educational robotics platforms, and automated guided vehicles (AGVs) with smooth peak current delivery.
Portable Lighting & Optics: Supplying sustained energy for heavy-duty exploration flashlights, professional photographic fill lights, and mobile security surveillance systems.
To maximize the cycle life and maintain the structural integrity of this lithium-ion module, strict adherence to handling and operational guidelines is essential. Proper care ensures the internal chemistry remains balanced and the protective circuitry functions optimally.
Dedicated Charging Protocols: Always utilize a specialized 7.4V lithium-ion charger. Connecting the module to incompatible power supplies, such as lead-acid chargers, will bypass safety thresholds and permanently damage the internal cell structure.
Environmental Handling: Keep the unit away from direct thermal extremes or open flames. The physical casing must not be punctured, crushed, or subjected to severe mechanical shock, which could compromise the internal separators.
Operating Conditions: Deploy the battery in environments free from excessive moisture, conductive dust, or corrosive gases. Adequate ventilation around the battery compartment prevents thermal buildup during heavy discharge cycles.
Secure Integration: When wiring the module into your device, verify the polarity (red for positive, black for negative). Ensure all terminal connections are mechanically tight to prevent resistive heating, sparking, or intermittent power loss.
Anomaly Monitoring: If the exterior shrink wrap appears bloated, or if you detect unusual heat, chemical odors, or rapid voltage drops, immediately disconnect the unit. Isolate it in a fire-safe container and consult a qualified technician.
Long-Term Storage: For extended periods of inactivity, condition the battery to a 30%-60% charge state. Store it in a climate-controlled, dry facility and implement a routine maintenance cycle (charge and discharge) every three to six months to preserve capacity.
We understand that integrating a new power source requires careful consideration. Below are detailed answers to common technical and operational questions regarding our 7.4V 5000mAh modules.
A1: The voltage profiles are not identical. A fully charged 7.4V lithium-ion pack peaks at 8.4V and operates down to 6.0V. In contrast, six fresh AA batteries start at 9V and drop to around 6V. You must verify that your specific instrument's voltage regulator can handle the 7.0V to 8.4V range. If compatible, this lithium pack offers a massive upgrade in runtime and weight reduction.
A2: Following standard electrical conventions, the red silicone wire designates the positive (+) terminal, while the black wire represents the negative (-) terminal. Always double-check your device's input polarity before finalizing any connections to prevent reverse-polarity damage to your circuit boards.
A3: We strongly advise against this. Pushing a 5A current exceeds the recommended 0.2C-0.5C charging threshold for this specific 5000mAh configuration. Accelerated charging generates excess internal heat, accelerating chemical degradation and shortening the overall lifespan. Stick to a 1.0A to 2.5A charger for optimal longevity.
A4: No, you should never wire these pre-configured packs together. The integrated BMS is calibrated specifically for a standalone 2S1P setup. Chaining them alters the electrical dynamics, causing the protection boards to conflict, fail, or allow dangerous overcharging. If your equipment requires a different voltage or higher capacity, contact our engineering team for a custom-built solution.
A5: Modern lithium-ion chemistry does not suffer from the "memory effect" found in older nickel-cadmium cells. The pack arrives partially charged for safe transport. Simply connect it to your dedicated charger until the indicator shows a full charge; no prolonged "activation" period is necessary.
A6: Under standard operating conditions—adhering to recommended charge/discharge rates and keeping the unit at room temperature—the pack will retain over 80% of its original 5000mAh capacity after 500 full cycles. Extreme temperatures and aggressive discharging will naturally accelerate wear.
A7: Yes. We provide comprehensive supply chain solutions and full-link engineering support, from initial R&D selection to post-sales service. Our facility supports rapid prototyping and efficient mass production with a typical lead time of 10 to 20 days. We can customize wire lengths, connectors, and casing materials to perfectly match your proprietary equipment designs.
