The 702737 model polymer lithium battery serves as a highly reliable, compact power source engineered specifically for demanding portable electronics and specialized lighting fixtures. Measuring a precise 7.0mm in thickness, 27mm in width, and 37mm in length, this lightweight pouch cell delivers a nominal capacity of 1700mAh at a steady 3.7V. The exterior features a durable, flexible aluminum-plastic film that resists physical stress while maintaining a slim profile, making it effortless to integrate into tight product housings. Inside, premium polymer materials work in tandem with a precision-welded protection circuit board (PCB). We configure these power units with adaptable wiring solutions—ranging from standard red and black silicone wires to the firm snap of specific JST or PH2.0 connectors—ensuring they arrive ready for immediate assembly. This meticulous construction prevents overcharging, over-discharging, and short circuits, granting engineers peace of mind when designing wearable technology, IoT sensors, or commercial illumination equipment.
Utilizing advanced polymer soft-pack technology, this cell packs a substantial 1700mAh capacity into a remarkably small footprint. This translates directly to longer operational hours for your devices, reducing the frequency of recharges and significantly improving the end-user's daily experience with portable lighting or wearable gear.
Safety remains our primary engineering focus. The built-in multiple protection circuits actively monitor voltage and current to prevent overcharging, over-discharging, and short circuits. Furthermore, the stable polymer electrolyte carries an extremely low risk of leakage. To facilitate your global market entry, these units comply with stringent international safety standards, including UL, CB, PSE, KC, RoHS, and UN38.3 testing.
Constructed with carefully selected cell materials and governed by intelligent protection mechanisms, the 702737 model sustains a long cycle life exceeding 500 complete charge-discharge cycles under standard conditions. This longevity minimizes replacement costs and enhances the overall value proposition of your hardware.
At just 7mm thick, the ultra-thin and lightweight structure is specifically tailored for modern electronics where internal space is at a premium. The smooth, adaptable exterior pouch allows for creative industrial designs without compromising on power availability.
Engineered for a stable discharge platform and a remarkably low self-discharge rate, this battery ensures that your equipment receives a steady, reliable flow of power. Its excellent storage characteristics mean the cells retain their charge effectively even after periods of inactivity.
We streamline your manufacturing process by completing all protection board welding and terminal crimping prior to shipment. Whether you require standard leads, JST, or PH2.0 connectors, the battery arrives ready for immediate integration, drastically reducing your assembly line labor and development time.
Model Number: | 702737 |
Nominal Capacity: | 1700mAh (0.2C discharge) |
Nominal Voltage: | 3.7V |
Charging Voltage: | 4.2V ± 0.05V |
Discharge Cut-off Voltage: | 3.0V (Protected by protection board, typically cuts off at 2.5-3.0V) |
Standard Charging Current: | 0.5C (approx. 850mA) |
Maximum Charging Current: | 1C (1700mA) |
Standard Discharge Current: | 0.5C (approx. 850mA) |
Maximum Continuous Discharge Current: | 1C (1700mA) |
Internal Resistance: | ≤ 80mΩ (including protection board) |
Cycle Life: | ≥ 500 cycles (initial capacity > 80%, 0.5C charge/0.5C discharge) |
Operating Temperature: Charging: | 0°C ~ +45°C / Discharging: -20°C ~ +60°C |
Storage Temperature: | -20°C ~ +45°C (recommended for short-term storage) / -20°C ~ +25°C (for long-term storage) |
| Battery Weight: | Approx. 25g (including protection board and leads) |
| Protection Functions: | Overcharge, over-discharge, overcurrent, short-circuit protection |
| Lead Wire Specifications: | Standard configuration is 2-pin terminal or red and black silicone wires; wire length/model can be customized. |
The highly adaptable nature of the 702737 polymer lithium battery makes it a preferred energy solution for a vast array of portable electronics. Its balance of a lightweight footprint, high energy retention, and strict safety protocols ensures it performs reliably across diverse sectors, including but not limited to:
Specialized Lighting Fixtures: Provides sustained, flicker-free power for portable LED work lights, drone gimbal cameras, emergency beacons, and tactical illumination equipment where weight and reliability are critical.
Smart Wearable Technology: The 7mm slim profile fits perfectly inside Bluetooth headsets, smartwatches, and fitness trackers, delivering all-day power without adding noticeable bulk to the user's wrist or ear.
Portable Digital & Tracking Devices: Ensures continuous operation for GPS trackers, digital voice recorders, and portable barcode scanners used in logistics and inventory management.
Smart Home & IoT Ecosystems: Acts as a dependable power reserve for wireless environmental sensors, smart door locks, and remote control units, maintaining connectivity even during main power interruptions.
Medical & Health Monitoring: Delivers stable voltage for sensitive portable monitors, electronic thermometers, and personal massagers, where consistent performance directly impacts user well-being.
Communication Gear: Powers compact walkie-talkies and wireless microphone systems, ensuring clear, uninterrupted audio transmission during critical events.
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Strict Charging Protocols: Always utilize a dedicated lithium-ion battery charger engineered to match the specific 4.2V charging voltage and current parameters outlined in this technical datasheet. The application of non-specified, incompatible, or poorly regulated chargers is strictly prohibited and may compromise cell integrity.
Handling Prohibitions: To maintain structural and chemical stability, it is absolutely forbidden to expose the battery pack to open flames, excessive heat sources, or direct mechanical abuse. Do not attempt to forcibly disassemble, crush, puncture the exterior aluminum-plastic film, or short-circuit the terminals. Charging operations must be halted if ambient temperatures fall outside the specified safe ranges.
Installation Guidelines: During hardware integration, carefully verify the polarity of the leads—typically red for positive and black for negative. Reversing the polarity can lead to immediate circuit failure. Ensure the mounting environment shields the pouch cell from severe physical impacts, sharp internal chassis edges, or continuous intense vibrations.
Optimal Storage Conditions: If the units are to be stored for extended periods before assembly, maintain them in a cool, dry, and well-ventilated environment. It is crucial to keep the cells at a half-charged state (measuring approximately 3.7V to 3.8V) to preserve internal chemistry. Strictly avoid storage locations subject to high humidity, extreme heat, or direct sunlight exposure.
Responsible Disposal: Upon reaching the conclusion of its operational lifespan (typically after capacity drops below 80% of the nominal value), the battery must not be discarded with general waste. It contains active chemical components that require proper recycling in strict accordance with your local environmental and electronic waste regulations.
A: Under theoretical conditions, utilizing a standard 850mA (0.5C) charging current, the process takes approximately 2 to 2.5 hours to transition from a completely depleted state to a full charge. This duration encompasses both the constant current (CC) and constant voltage (CV) phases. Please note that actual charging times may vary slightly based on the specific efficiency of your charging circuitry and the ambient temperature during the cycle.
A: The precision protection board acts as an active safety monitor for the cell. It continuously evaluates the voltage and current flow. If the voltage spikes above 4.25V (risking overcharge) or drops below the 2.5V-3.0V threshold (risking over-discharge), the board instantly severs the connection. Similarly, if the current exceeds safe operational limits due to a short circuit or abnormal load, the PCB automatically cuts off the circuit, preventing thermal events and protecting both the battery and your host device.
A: The 702737 model is engineered for a maximum continuous discharge current of 1700mA (1C). It is highly effective for standard portable electronics and lighting fixtures. However, if your specific application demands rapid, high-current draws (such as motor-driven tools), please consult with our engineering team during the selection phase. We offer specialized high-rate models tailored for those exact parameters. Operating this specific cell beyond its rated specifications is strictly prohibited, as it will trigger the protection board and may cause irreversible damage.
A: For our standard wiring configurations, visual identification is straightforward: the red silicone wire designates the positive terminal (+), while the black wire indicates the negative terminal (-). We strongly advise assembly technicians to verify these connections prior to integration, as reversing the polarity can lead to immediate equipment malfunction or compromise the battery's internal circuitry.
A: No deep cycle activation is necessary. All units undergo rigorous factory testing and are shipped with a partial charge to maintain chemical health during transit. While you can use them immediately, we recommend performing one complete charge-and-discharge cycle upon initial installation. This simple step helps properly calibrate your device's internal power management system and battery percentage display, ensuring accurate readings for the end user.
A: Lithium-ion cells are classified as restricted items under international air and land freight regulations. To ensure smooth logistics, our volume shipments strictly comply with UN38.3 testing standards and all relevant hazardous materials transportation guidelines. For prolonged storage at your facility, keep the units in a climate-controlled, dry space away from direct sunlight, maintaining them at roughly a 50% charge state to preserve optimal cell longevity.
Beyond delivering a reliable 3.7V 1700mAh power source, our facility is structured to support large-scale procurement and specialized engineering requirements, ensuring a stable supply chain for your production lines.
We understand that off-the-shelf solutions do not always fit complex industrial designs. Our engineering team supports deep customization of battery dimensions, capacity adjustments, specific wire lengths, and diverse terminal connectors (including JST, PH2.0, and custom housings). This tailored approach guarantees that the power unit perfectly matches your terminal equipment's unique spatial and electrical integration needs.
Consistency across volume orders is maintained through our fully automated production lines and precision testing equipment. Every cell undergoes a strict, full-process quality inspection—from initial raw material screening to final pre-shipment voltage checks. This rigorous methodology guarantees zero false capacity claims and ensures that every batch performs identically in the field.
Leveraging our extensive manufacturing capacity, we offer highly competitive tiered pricing structures for volume procurement, backed by long-term supply agreements that secure your production schedules. From the initial project evaluation and rapid prototyping phases to comprehensive post-delivery warranty support, our dedicated technical and export teams provide one-on-one, rapid-response assistance to keep your projects moving smoothly.
