1. Introduction
Thank you for choosing the Wothfav C316 Rechargeable Hand Warmer. This device is designed to provide warmth, portable power, and emergency lighting in a compact, magnetic split unit. Please read this manual carefully before use to ensure proper operation and to maximize the product's lifespan.
Image 1.1: The Wothfav C316 Rechargeable Hand Warmer, showcasing its dual unit design and integrated flashlight.
2. Product Features
- 3-in-1 Multifunction Design: Combines a hand warmer, a power bank, and an emergency flashlight into a single device.
- Magnetic Split Design: Two independent 5000mAh units (total 10000mAh) can be used separately or together, allowing you to share warmth.
- Rapid 360° Heating: Heats up in approximately 3 seconds, providing warmth around the entire unit.
- 5 Adjustable Heat Levels: Select from 40°C (104°F), 45°C (113°F), 50°C (122°F), 55°C (131°F), and 60°C (140°F) for personalized comfort.
- Extended Warmth: Provides warmth for up to 18 hours, depending on the selected heat level and ambient temperature.
- Emergency Flashlight: Features 4 lighting modes for various situations.
- Advanced Safety Protection: Built-in AI smart chip offers protection against overcharge, over-discharge, overheating, short-circuit, overvoltage, and overpower.
- Portable and Compact: Ergonomic design for easy carrying in pockets or bags.
Image 2.1: Diagram illustrating the internal components and AI Smart Chip protection features of the hand warmer.
3. Package Contents
Upon unpacking your Wothfav C316, please ensure all items are present and in good condition:
- 2 x Wothfav C316 Hand Warmer Units (5000mAh each)
- 2 x USB-C Charging Cables
- 1 x User Manual (this document)
4. Setup
4.1 Initial Charging
Before first use, fully charge both hand warmer units. Connect the provided USB-C charging cables to each unit's USB-C port and plug the other end into a compatible USB power adapter (not included) or a computer USB port. The indicator lights will show charging status and turn solid when fully charged. A full charge typically takes about 3 hours.
4.2 Separating and Joining Units
The two hand warmer units are held together magnetically. To separate them, gently pull them apart. To join them, align the magnetic sides and they will snap together.
5. Operating Instructions
5.1 Hand Warmer Function
- Power On: Press and hold the power button on the unit for approximately 3 seconds until the indicator light illuminates. The unit will begin heating to the last used temperature setting.
- Adjust Temperature: Short press the power button to cycle through the 5 available heat levels: 40°C (104°F), 45°C (113°F), 50°C (122°F), 55°C (131°F), and 60°C (140°F). The indicator light color or display will change to reflect the current setting.
- Power Off: Press and hold the power button for approximately 3 seconds until the indicator light turns off.
Image 5.1: Visual representation of the 5 heat levels and heating duration for the Wothfav C316 hand warmer.
5.2 Power Bank Function
Each 5000mAh unit can serve as a portable power bank to charge your electronic devices.
- Connect Device: Use a compatible USB charging cable (your device's cable or the provided USB-C cable) to connect your electronic device to either the USB-C output port or the USB-A output port on the hand warmer unit.
- Charging: The hand warmer will automatically begin charging your device. The indicator lights may show the remaining battery level.
- Disconnect: Once your device is charged, disconnect the cable.
Image 5.2: A Wothfav C316 unit connected via USB-C to charge a smartphone, demonstrating its power bank capability.
5.3 Flashlight Function
Each unit includes an integrated flashlight with multiple modes for emergency or low-light situations.
- Activate Flashlight: Double-press the power button quickly to turn on the flashlight.
- Change Modes: Short press the power button to cycle through the available modes: High, Low, Strobe, and SOS.
- Turn Off Flashlight: Double-press the power button quickly again to turn off the flashlight.
Image 5.3: The Wothfav C316 flashlight function being used in an outdoor camping scenario and for reading in low light.
6. Maintenance
- Cleaning: Wipe the surface of the hand warmer with a soft, dry cloth. Do not use abrasive cleaners or immerse the device in water.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures. If storing for an extended period, charge the units to about 50% every 3 months to preserve battery health.
- Battery Care: Avoid fully discharging the battery frequently, as this can reduce its lifespan.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Hand warmer not heating | Battery is low or depleted; Device is not powered on. | Charge the device fully; Press and hold the power button for 3 seconds to turn on. |
| Device not charging | Charging cable is faulty; Power adapter is not working; Port is dirty. | Try a different USB-C cable and power adapter; Clean the charging port gently. |
| Short battery life | High heat level selected; Very cold ambient temperature. | Lower the heat setting; Battery life is reduced in extremely cold conditions. |
| Flashlight not working | Battery is low; Not activated correctly. | Charge the device; Double-press the power button quickly to activate. |
8. Specifications
- Brand: Wothfav
- Model: C316
- Battery Capacity: 2 x 5000mAh (10000mAh total) Lithium-ion
- Material: Acrylonitrile Butadiene Styrene (ABS)
- Dimensions: 110 x 55 x 29 mm
- Weight: Approximately 340 grams (for both units)
- Charging Time: Approximately 3 hours
- Heat Levels: 5 levels (40°C/104°F, 45°C/113°F, 50°C/122°F, 55°C/131°F, 60°C/140°F)
- Power Source: Battery powered
- Ports: 1x USB-C (Input/Output), 1x USB-A (Output) per unit
Image 8.1: Diagram showing the compact dimensions of the Wothfav C316 hand warmer units.
9. Safety Information
Please observe the following safety precautions to prevent injury or damage to the device:
- Do not expose the device to extreme temperatures (above 60°C/140°F or below -10°C/14°F) or direct sunlight for prolonged periods.
- Do not puncture, disassemble, or modify the device.
- Keep away from water and high humidity.
- Do not use if the device is damaged or swollen.
- Keep out of reach of children.
- Use only approved charging cables and adapters.
- Avoid placing the device directly on sensitive skin for extended periods, especially at higher heat settings, to prevent burns.
10. Warranty and Support
Wothfav products are designed for reliability and performance. For specific warranty details and customer support, please refer to the warranty card included with your purchase or visit the official Wothfav website. If you encounter any issues or have questions, please contact our customer service team.
