Description
WLY103443 3.7V 1500mAh LiPo Battery – Micro Rechargeable Battery Pack for Wearables, Micro Drones, and IoT Devices
The WLY103443 3.7V 1500mAh LiPo Battery is a compact, high-capacity lithium polymer battery designed to deliver reliable energy to low-voltage electronics. This battery is engineered for applications that require lightweight power, compact form factors, and stable voltage output, such as wearable devices, micro drones, IoT sensor nodes, and embedded electronics. Its slim 10 × 34 × 43 mm profile and lightweight 30 g design allow seamless integration into devices where size and weight are critical, while providing ample 1500mAh capacity for extended operational time.
This battery combines high energy density, safety, and long cycle life with flexibility in integration through its open-wire connector design, making it a perfect choice for both prototyping and production applications.
Key Features of the WLY103443 3.7V 1500mAh LiPo Battery
The WLY103443 3.7V 1500mAh LiPo Battery is packed with features that make it highly suitable for modern compact electronics, delivering performance, reliability, and flexibility.
High-Capacity, Compact Form
One of the defining features of the WLY103443 3.7V 1500mAh LiPo Battery is its high capacity in a compact form factor. With 1500mAh, this battery provides significantly longer runtime than smaller cells while maintaining a slim and lightweight profile. Its dimensions (10 × 34 × 43 mm) allow designers to fit it into tight enclosures, making it ideal for wearable devices, micro drones, and other space-constrained IoT electronics.
By optimizing the energy density, the WLY103443 3.7V 1500mAh LiPo Battery ensures that designers can maximize runtime without adding unnecessary weight, which is critical for portable devices or aerial drones where efficiency directly impacts usability and flight performance.
Stable Nominal Voltage of 3.7V
The WLY103443 3.7V 1500mAh LiPo Battery maintains a stable 3.7V output throughout its nominal operation. This is essential for devices that rely on predictable voltage rails such as microcontrollers, sensors, BLE radios, and camera modules. Consistent voltage helps prevent system resets, inaccurate readings, or communication errors, which can occur with fluctuating power sources.
The 3.7V nominal voltage is compatible with most low-voltage electronics, allowing the WLY103443 3.7V 1500mAh LiPo Battery to directly feed 3.3V regulators or low-power MCUs efficiently.
Rechargeable & Long Cycle Life
The WLY103443 3.7V 1500mAh LiPo Battery is designed for repeated use, capable of ≥300 charge/discharge cycles with less than 20% capacity loss under standard operating conditions. Its 0.5C continuous charge/discharge rating ensures longevity while balancing efficiency and safety.
By using this battery, manufacturers and hobbyists can reduce replacement costs and environmental impact, avoiding disposable batteries while maintaining consistent performance over extended periods.
Flexible Integration with Open-Wire Connector
The open-wire connector allows the WLY103443 3.7V 1500mAh LiPo Battery to be easily integrated into custom PCBs, JST, Molex, or other connector assemblies. This flexibility simplifies both prototyping and mass production, making it suitable for a wide variety of electronics, including IoT nodes, drones, and wearables.
The open-wire design also allows engineers to adapt connection lengths, solder points, and connector types, ensuring compatibility with almost any device or project.
Safe Operating Window & Ratings
The WLY103443 3.7V 1500mAh LiPo Battery is designed with safe charge and discharge limits:
- Continuous: 0.5C (~750 mA)
- Maximum: 1C (~1500 mA)
These ratings ensure that the battery can deliver steady energy without overheating or compromising safety, making it ideal for devices that require consistent current delivery with occasional short bursts for peak performance.
Technical Specifications
The WLY103443 3.7V 1500mAh LiPo Battery has been meticulously designed with precise technical parameters that allow engineers, developers, and hobbyists to map it accurately to their system requirements. Each specification is optimized to ensure safety, reliability, and integration flexibility, making this battery ideal for wearables, micro drones, IoT devices, and embedded electronics.
Model Number – WLY103443
The model number WLY103443 is a unique identifier for this single-cell lithium polymer battery. It denotes the cell geometry, capacity class, and manufacturing family, helping users distinguish it from other LiPo cells. Using the correct model number is critical for compatibility, whether ordering replacements, performing maintenance, or referencing datasheets. Accurate identification ensures the device receives consistent power output and prevents potential performance or safety issues that could arise from using an incompatible battery.
Nominal Voltage – 3.7V
The WLY103443 3.7V 1500mAh LiPo Battery provides a stable nominal voltage of 3.7V, which is the mid-point voltage under typical operating conditions. The battery supports a charging cutoff voltage of 4.2V and a discharge cutoff of 2.75–3.0V, which protects the battery from overcharging or deep discharge that can reduce cycle life or cause safety risks. This voltage range is well-suited for devices that operate on 3.3V logic systems or low-voltage MCU circuits, including wearable electronics, BLE sensors, and compact IoT nodes. The stability of the voltage ensures consistent performance under varying loads, preventing resets or erratic behavior in sensitive electronics.
Nominal Capacity – 1500mAh
Delivering a capacity of 1500mAh (1.5Ah), the WLY103443 battery provides extended operational runtime, outperforming smaller cells typically ranging from 300–800mAh. This makes it ideal for devices that require longer intervals between charges, such as smartwatches, fitness trackers, micro drones, or remote IoT sensors. The actual usable capacity can vary depending on operating temperature, current load profile, and depth of discharge, but the 1500mAh rating ensures significant energy storage in a compact footprint, allowing devices to run reliably for several hours or even days depending on duty cycles.
Continuous & Maximum Charge/Discharge Ratings
The WLY103443 3.7V 1500mAh LiPo Battery is designed to handle both routine and peak energy demands:
- Continuous Charge: 0.5C (~750 mA) — Suitable for safe, everyday charging that maintains battery longevity without overheating.
- Maximum Charge: 1C (~1500 mA) — Allows faster recharge cycles for situations where rapid power replenishment is necessary, but requires a LiPo-specific charger with CC/CV profile.
- Continuous Discharge: 0.5C (~750 mA) — Ensures stable power delivery for wearables and low-power IoT devices under normal operating loads.
- Maximum Discharge: 1C (~1500 mA) — Supports short bursts of higher current, essential for micro drones performing agile maneuvers or devices with sudden sensor or transmitter activity.
These ratings provide a balance between safety, runtime, and performance, ensuring the battery can accommodate both steady operation and transient high-current events without compromising longevity.
Connector Type – Open Wire
The open-wire configuration of this battery provides maximum integration flexibility. Users can directly solder wires, attach JST or Molex connectors, or connect a protection circuit module (PCM) to safeguard against overcharge, overdischarge, and short circuits. This feature is particularly advantageous for prototyping, custom electronics, or small-batch production, where designers may need to customize wiring layouts or integrate the battery into non-standard enclosures.
Life Cycles – ≥300
The WLY103443 battery is rated for over 300 full charge/discharge cycles, meaning it maintains ≥80% of its original capacity under standard operating conditions. The cycle life can vary based on the depth of discharge, charge rate, and environmental factors such as temperature and humidity. Following proper charging, storage, and usage guidelines ensures maximum reliability and extended service life, reducing the need for frequent replacements and lowering overall operational costs.
Physical Dimensions & Weight
With compact dimensions of 10 × 34 × 43 mm and a light weight of approximately 30g, the WLY103443 battery is engineered for easy integration into slim or compact electronic devices. Its low profile and minimal mass make it ideal for applications where space and weight are critical, such as micro drones, wearable technology, and portable IoT modules. The slim rectangular design also simplifies mounting inside enclosures, wristbands, or drone frames, while minimizing mechanical stress on connectors and internal circuitry.
Conclusion
The WLY103443 3.7V 1500mAh LiPo Battery combines high energy density, stable voltage output, flexible connectivity, and lightweight design, making it an excellent choice for wearables, micro drones, IoT devices, and embedded systems. Its carefully engineered specifications ensure reliable power delivery, long cycle life, and easy integration, enabling designers to build compact, high-performance electronics without compromising safety or functionality.
Integration & Design Guidance
Mechanical Integration
When incorporating the WLY103443 3.7V 1500mAh LiPo Battery into any device, it is crucial to account for its flat and compact profile. Enclosures should provide 2–3 mm of extra clearance around the battery to accommodate insulation or protective circuits. This prevents direct contact with other components or the enclosure, reducing mechanical stress that could damage the cell or connectors. For added safety, secure the battery using non-conductive foam, clips, or brackets. Proper mechanical support ensures stability during operation, transportation, and handling, minimizing the risk of vibration, shifting, or impact-related damage.
Electrical Integration
For reliable operation, it is highly recommended to include a protection circuit module (PCM) when using the WLY103443 3.7V 1500mAh LiPo Battery. The PCM protects against overcharge, overdischarge, and short circuits, preserving both the battery and connected electronics. Even if the battery has internal protection, implementing system-level monitoring is advised to track state-of-charge (SoC), voltage levels, and current draw. This approach ensures stable performance, prevents unexpected shutdowns, and mitigates risk during peak load events. The battery’s open-wire connectors provide flexibility for integration with daughterboards, custom connector assemblies, or charging modules, allowing designers to adapt the battery to various device layouts.
Thermal Considerations
Temperature control is critical to maximize the lifespan and safety of the WLY103443 3.7V 1500mAh LiPo Battery. Avoid placing the battery near heat-generating components such as motor drivers, power MOSFETs, or high-current regulators, as excessive heat can accelerate cell degradation, reduce cycle life, and even cause swelling. The battery should be located in a thermally stable area within the enclosure. If proximity to heat sources cannot be avoided, employ thermal insulation, heat sinks, or ventilation to maintain safe operating temperatures and ensure consistent performance.
System Power Budgeting
Proper power budgeting allows for accurate estimation of device runtime. A practical formula is:
Runtime (hours) ≈ Capacity (mAh) / Load (mA).
For example, a device drawing a steady 150 mA from the WLY103443 3.7V 1500mAh LiPo Battery can operate for roughly 10 hours under ideal conditions. However, peak current bursts, regulator inefficiencies, and environmental factors may reduce actual runtime. Designers should account for transient spikes, load variations, and temperature effects when planning battery usage. Implementing load management strategies and using efficient regulators can help extend battery life and maintain device reliability, especially in high-demand applications like micro drones, wearables, and IoT systems.
Comparative Analysis of WLY103443 3.7V 1500mAh LiPo Battery
Advantages over Smaller Cells
The WLY103443 3.7V 1500mAh LiPo Battery offers significant benefits compared with smaller 300–800 mAh LiPo cells. Its higher capacity allows devices to run for longer periods without needing a recharge, which is particularly important for wearables, IoT devices, and micro drones where access for charging may be limited. Fewer charge cycles are needed to achieve the same operational time, reducing wear on both the battery and the system’s power management components. This not only improves the user experience but also lowers long-term operational costs. Moreover, the larger capacity supports higher peak currents without excessive voltage sag, maintaining performance in burst-load scenarios such as sudden sensor readings, motor bursts in drones, or wireless data transmissions.
Advantages over Larger or High-C Cells
While higher-capacity or high-discharge (high-C) LiPo cells exist, they often come with increased size and weight. The WLY103443 3.7V 1500mAh LiPo Battery strikes an optimal balance between capacity and form factor. Its compact 10 × 34 × 43 mm dimensions and lightweight 30g mass make it easier to integrate into slim enclosures, wearable straps, and compact drone frames where space and weight are critical. Additionally, while some high-C cells provide more sustained burst current, they can generate excessive heat, require more robust protection circuits, and complicate enclosure design. The WLY103443 3.7V 1500mAh LiPo Battery delivers sufficient bursts for typical micro drones, IoT devices, and embedded electronics without these drawbacks, making it ideal for constrained and lightweight designs.
Overall Comparative Perspective
Choosing the right battery depends on balancing capacity, weight, physical dimensions, and discharge requirements. Compared with smaller cells, the WLY103443 offers extended runtime and fewer cycles, while compared with larger high-C cells, it offers easier mechanical integration, less weight penalty, and adequate performance for most microelectronics applications. This positions it as a versatile solution for wearables, micro drones, and IoT applications where compact design and reliable energy delivery are priorities.
Troubleshooting & Diagnostics of WLY103443 3.7V 1500mAh LiPo Battery
Rapid Voltage Drop
Rapid voltage drops can occur if the battery is subjected to sudden high-current loads, aging, or improper charging practices. In devices like micro drones or IoT nodes, a rapid voltage drop can trigger brownouts or unexpected shutdowns. To stabilize current draw, ensure that the device’s power regulation circuits are designed to handle peak loads. Adding capacitors near high-current components, avoiding deep discharges below the recommended cutoff, and maintaining proper thermal conditions can mitigate sudden voltage sag. Periodically monitoring voltage during operation helps detect early signs of degradation.
Battery Swelling
Swelling is a common indicator of internal cell stress or degradation in LiPo batteries. Causes include overcharging, deep discharging, high-temperature exposure, or aging. To handle swelling safely, immediately disconnect the battery from any load and avoid puncturing or applying pressure. Store the swollen battery in a fireproof container and follow local recycling guidelines. Preventive practices include using a reliable LiPo charger, avoiding prolonged storage at full charge, and maintaining proper ambient temperatures during operation.
Reduced Runtime
A noticeable decrease in operational runtime can result from capacity loss, aging, or improper charging/discharging cycles. To maintain consistent performance, calibrate the system’s battery management software to accurately track state-of-charge (SoC). Regularly cycle the battery according to recommended charge/discharge rates, avoid operating outside safe temperature ranges, and consider replacing cells approaching the end of their cycle life. Accurate load profiling also ensures that runtime estimates reflect real-world conditions rather than theoretical values.
Charging Issues
Charging issues can manifest as slow charging, incomplete charging, or unusual heating. Common causes include faulty chargers, poor wire connections, or open-wire leads. Always use LiPo-specific chargers with CC/CV profiles and verify connections before initiating a charge. Inspect wires for frays, shorts, or loose solder joints. System-level monitoring of voltage and current can alert users to abnormal charging conditions. Avoid charging unattended and maintain proper ventilation during the charging process.
Proactive Maintenance and Diagnostics
For long-term reliability, implement a routine check of battery health. Measure resting voltage, check for physical damage, inspect connectors, and test for consistent discharge rates. Keeping a log of charge cycles, runtime, and peak currents helps predict end-of-life and prevents unexpected failures. Combining proper handling, storage, and monitoring ensures the WLY103443 3.7V 1500mAh LiPo Battery remains safe, reliable, and performs optimally across its lifecycle.
Conclusion
The WLY103443 3.7V 1500mAh LiPo Battery is a high-performance, compact, and reliable energy solution designed for modern electronics where space, weight, and consistent power delivery are crucial. Its stable 3.7V nominal voltage ensures predictable operation for sensitive microcontrollers, sensors, and communication modules, while its 1500mAh capacity provides extended runtime compared with smaller cells.
Engineered for flexibility, the open-wire connector allows seamless integration into custom enclosures, wearable devices, micro drones, IoT nodes, and embedded systems. The battery’s charge and discharge ratings, combined with a life cycle of ≥300 cycles, make it both durable and safe, especially when paired with standard protection circuitry and proper thermal management.
Lightweight and slim at 10 × 34 × 43 mm and ≈30 g, the WLY103443 3.7V 1500mAh LiPo Battery delivers high energy density without compromising device ergonomics or flight performance in drones. With careful design integration—considering mechanical mounting, electrical safety, thermal management, and system power budgeting—this battery becomes a reliable backbone for a wide range of applications, from wearable electronics to micro UAVs and IoT deployments.
In summary, the WLY103443 3.7V 1500mAh LiPo Battery combines power, longevity, and adaptability, making it an essential choice for engineers, makers, and hobbyists seeking a high-quality, compact rechargeable battery that meets the demands of today’s cutting-edge electronic projects.
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