Dual Slot 3.7V Lithium Battery Charger for 18650/AA/AAA

Universal Dual Slot 3.7V Lithium Battery Charger for 18650, 14500, AA, AAA – Fast & Safe Charging

Upgrade your charging experience with the Bigyan Project Universal Dual Slot 3.7V Lithium Battery Charger, designed for efficiency, safety, and versatility. This compact yet powerful charger supports a wide range of 3.7V rechargeable batteries, including 18650, 14500, AA, AAA, and more. Featuring auto-cutoff technology and LED indicators, it ensures your batteries are charged quickly without the risk of overcharging. Whether you're at home, in the office, or traveling, this charger is your reliable companion for all your lithium-ion battery needs.

Product Specifications

Key Features

• Universal Compatibility – Charges all standard 3.7V lithium-ion batteries including 18650, AA, AAA, 14500, and 16340.
• Dual-Slot Charging – Charge two batteries simultaneously for faster power-ups.
• Smart LED Indicators – Red light indicates charging, green means fully charged.
• Auto Cut-Off Technology – Stops charging automatically when the battery reaches 4.2V to prevent damage.
• Wide Voltage Input – Works with AC 100-240V, making it ideal for international travel.
• Lightweight & Compact – Weighs only 74g, perfect for home, office, or travel use.
• Enhanced Safety – Built-in overcharge and short-circuit protection for worry-free charging.

Applications & Use Cases

The Bigyan Project Dual Slot Battery Charger is perfect for a variety of applications, including:

• Recharging batteries for flashlights, LED lights, and emergency lamps.
• Powering up batteries for RC toys, drones, and electronic gadgets.
• Keeping backup batteries ready for cameras, wireless devices, and DIY electronics projects.
• Ideal for students, engineers, and hobbyists working with 3.7V lithium-ion batteries.

User Guide – How to Use

1. Plug the charger into a standard AC 220V power outlet.
2. Insert your 3.7V lithium-ion battery (18650, AA, AAA, etc.) into the correct slot.
3. The LED will turn red, indicating charging is in progress.
4. Once fully charged, the LED will switch to green.
5. Remove the battery and unplug the charger when not in use.

Frequently Asked Questions (FAQs)

• Can this charger be used for NiMH batteries? No, this charger is designed exclusively for 3.7V lithium-ion batteries.
• Does it support fast charging? Yes, it provides up to 1000mA charging current for faster power-ups.
• Is overcharging a concern? No, the auto-cutoff feature ensures the battery stops charging once full.
• Can I charge two different battery types at the same time? Yes, as long as both are 3.7V lithium-ion batteries.

Challenges & Considerations

• Only compatible with 3.7V lithium-ion batteries—do not use with other battery types.
• Ensure proper polarity when inserting batteries to avoid damage.
• For optimal performance, use high-quality rechargeable batteries.

Compatibility

This charger is compatible with all standard 3.7V lithium-ion batteries, including:

• 18650 (Li-ion)
• 14500 (Li-ion)
• 16340 (Li-ion)
• AA/AAA (3.7V Li-ion variants only)

Future Enhancement Options

• USB-C compatibility for modern charging convenience.
• Multi-voltage support for different battery chemistries.
• Smart charging with LCD display for real-time monitoring.

Benefits of Choosing Bigyan Project’s Battery Charger

• Reliable and safe charging for all your 3.7V lithium-ion batteries.
• Compact and travel-friendly design.
• Affordable yet high-quality performance.
• Trusted by DIY enthusiasts, engineers, and tech lovers.

Conclusion

The Bigyan Project Universal Dual Slot 3.7V Lithium Battery Charger is a must-have for anyone using rechargeable lithium-ion batteries. With its smart charging technology, wide compatibility, and compact design, it offers the perfect balance of efficiency and safety. Whether you're a professional or a hobbyist, this charger ensures your devices stay powered up whenever you need them. Order yours today and experience hassle-free battery charging!