USB Battery Charging Dock for 3.7V Lithium – Smart & Portable
USB Battery Charging Dock for 3.7V Lithium – Smart & Portable
USB Rechargeable Battery Charging Dock – Smart & Portable
Keep your 3.7V lithium batteries topped up and ready to go with this compact USB rechargeable dock. Featuring automatic battery recognition, smart charge-status indicators, and built-in safety protections, this little charger punches well above its size. Simply plug it into any USB power source and let it do the work.
Key Features
- Universal 3.7V Compatibility: Automatically recognizes and charges a wide variety of 3.6V–3.7V lithium rechargeable batteries.
- Smart Charge Indicators: Red light flashes during charging; turns green when fully charged — no guesswork needed.
- Trickle Compensation Mode: Switches to a low-current maintenance charge once full, so you can safely leave it plugged in for standby use.
- Built-In Safety Protections: Guards against reverse battery installation and short circuits to keep your batteries and devices safe.
- Fast 0.5A Output: Charges faster than standard low-output chargers, getting your batteries back in action quickly.
- Global USB Compatibility: Plug into any standard USB port — wall adapter, power bank, laptop, or car charger.
- Compact & Portable: Pocket-sized at just 7 × 6 × 4.8 cm, ideal for travel, home, or everyday use.
Specifications
| Material | ABS Plastic |
| Dimensions | 7 × 6 × 4.8 cm / 2.8 × 2.4 × 1.9 inches |
| Input | 5V / 0.5A (500mA) |
| Output Current | 0.5A |
| Connection | USB Plug-In |
| Compatible Batteries | 3.6V–3.7V Lithium Rechargeable |
What's in the Box
- 1× USB Rechargeable Battery Charging Dock
- 1× 3.7V Lithium Battery
Made in Mainland China.
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Learn more: EPA guidance on lithium-ion battery handling
Frequently Asked Questions
Q: What type of batteries does this USB charging dock support?
A: This rechargeable dock is designed for 3.6V–3.7V lithium rechargeable batteries. It automatically recognizes the battery type and adjusts the charging process accordingly, making it compatible with a wide variety of standard lithium cells.
Q: How do I know when my battery is fully charged?
A: The dock features a clear LED indicator system — the red light flashes while your battery is actively charging, and it switches to a steady green light once charging is complete. The dock then automatically enters trickle compensation mode for safe long-term standby.
Q: Can I use this charger with any USB power source?
A: Yes! The dock connects via standard USB and is compatible with virtually any USB power source globally — including wall adapters, power banks, laptops, and car chargers. Input requirement is 5V / 0.5A.
Q: Is there protection against accidental misuse?
A: Absolutely. The dock includes built-in protection against reverse battery installation and short circuits, so accidental mis-insertion won't damage your battery or the charger itself.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.