Dual-Slot 3A Fast Charger for 18V & 21V Lithium Batteries

Charge Two 18V/21V Lithium Batteries at Once — Fast & Efficiently

Keep your power tools running without downtime. This 3A Dual-Slot Fast Charger is built for 18V and 21V lithium-ion batteries, including BL1415, BL1815, BL1830, and BL1850 models. With two independent charging bays and a 3A output, you can charge two batteries simultaneously and get back to work faster than ever.

Whether you're a contractor on a job site or a weekend DIYer tackling home projects, this charger delivers reliable, consistent power replenishment with clear LED status indicators so you always know the charge state at a glance.

Key Features

• Dual 2-Way Charging Bays: Charge two 18V or 21V lithium-ion batteries at the same time
• 3A Fast Charge Output: Quickly tops up your batteries so tools stay ready
• Universal Voltage Input: AC 110–240V — compatible with both EU and US power standards
• EU/US Plug Options: Choose the plug type that suits your region
• LED Status Indicators: Green = powered/full; Red = charging — always know your battery status at a glance
• Compatible Models: BL1415, BL1815, BL1830, BL1850 and equivalent 18V/21V lithium-ion battery packs
• 80cm Cable Length: Generous cord reach for flexible use on the workbench or job site

Technical Specifications

What's in the Box

• 1× Dual-Slot 3A Battery Charger (battery not included)

Note: Battery not included. Please allow 1–2cm variance due to manual measurement. Actual color may vary slightly from product images due to lighting and screen differences.

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Frequently Asked Questions

Q: Which battery models is this 18V/21V charger compatible with?

A: This dual-slot fast charger is designed to work with 18V and 21V lithium-ion battery packs, specifically models BL1415, BL1815, BL1830, and BL1850. Always verify your battery's voltage and connector type before use.

Q: Can I charge two batteries at the same time?

A: Yes! This charger features two independent charging bays, allowing you to charge two compatible 18V or 21V lithium-ion batteries simultaneously, reducing your downtime between jobs.

Q: Is this charger compatible with both US and EU outlets?

A: Absolutely. The charger accepts a wide input voltage range of AC 110–240V, and is available with either a US or EU plug — just select your preferred plug type when ordering.

Q: How do I know when my battery is fully charged?

A: The built-in LED indicator gives a clear status update: a green light means the unit is powered on, a red light indicates charging is in progress, and the light returns to green when the battery is fully charged.

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.