Details

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Dual-Slot 18650 Lithium-Ion Battery Charger | Model HD-999A 🔋⚡

The Dual-Slot 18650 Li-ion Battery Charger Model HD-999A is a compact, cost-effective power solution designed specifically for charging 3.7V 18650 cylindrical lithium-ion batteries. Featuring spring-loaded contacts and an integrated 2-pin power cord, this unit offers simple plug-and-play operation for tactical flashlights, vaping mods, headlamps, and DIY electronics.

Key Product Features

• Dedicated Dual-Bay Charging: Equipped with two independent charging slots tailored to hold 18650 rechargeable Li-ion cells securely during operation.

• Spring-Tension Contacts: Features heavy-duty internal steel springs at the negative terminals to ensure constant electrical contact and snug battery placement.

• Built-In LED Charging Indicators: Includes individual charging status LEDs for visual feedback on charging progress.

• Direct AC Europlug Connector: Comes with an attached, flexible AC cable ending in a standard 2-pin round plug (Europlug), eliminating the need for separate adapters or USB bricks.

• Clear Molded Polarity Guides: Engraved positive (+) and negative (-) polarity icons inside each bay help ensure safe, correct battery insertion.

• Compact & Lightweight Housing: Built with durable, impact-resistant ABS plastic, making it ideal for home, workshop, or field kit use.

Technical Specifications

• Model: HD-999A.

• Compatible Battery Type: 3.7V Lithium-Ion 18650 Cylindrical Cells.

• Number of Slots: 2 Bays.

• Plug Style: 2-Pin Europlug (Type C).

• Color: Black.

• Application: Recharging 3.7V 18650 batteries for flashlights, laser pointers, portable fans, and wireless electronic projects.

Top 3 Customer Questions & Concerns 🙋‍♂️

⚙️ Can I use this charger for AA or AAA batteries?

No. This charger is specifically designed for 3.7V 18650 Lithium-Ion batteries. Standard 1.2V or 1.5V AA/AAA batteries (Ni-MH/Alkaline) are chemically incompatible and should not be charged in this unit.

🔌 Can I charge just one battery at a time?

Yes. The bays operate independently, allowing you to charge either a single 18650 cell or two cells simultaneously.

⚠️ How do I know when my batteries are fully charged?

The onboard LED indicator lights will signal charging status—typically glowing red during active charging and changing to green (or turning off) once the batteries reach full capacity.