Smart Lithium Battery Charger for 12V & 18V Power Tool Battery Packs

Keep your cordless screwdrivers, wrenches, and power tools running strong with this intelligent 18650 lithium battery charger. Available in two output configurations — 12.6V 2A and 21V 1A — this compact charger is built to safely and efficiently top up your Li-ion battery packs. With automatic stop charging, an LED status indicator, and wide AC input compatibility (100–240V), it's a reliable everyday charging solution for DIYers and professionals alike.

Made in Mainland China.

Key Features

Smart Charging with LED Indicator: Red light during charging, green light when fully charged — no guesswork needed.
Automatic Cut-Off: Stops charging automatically when the battery is full, preventing overcharging and extending battery life.
Dual Output Options:
- 12.6V – 2A: Output voltage range 10.8V–13V, current 0–2A (for 12V Li-ion packs)
- 21V – 1A: Output voltage range 18V–22V, current 0–1A (for 18V Li-ion packs)
Wide AC Input: AC 100–240V, 50/60Hz — compatible with EU and US wall plugs.
Universal DC Plug: DC 5.5×2.1mm / 5.5×2.5mm barrel connector fits a wide range of battery packs.
CE & RoHS Certified: Meets safety and environmental compliance standards.
Patented Design: Engineered for reliable, consistent charging performance.
Lightweight & Compact: Approx. 100g gross weight — easy to store or carry.

Technical Specifications

Item Type	Lithium Battery Charger
Model	BAC001
Input	AC 100–240V, 50/60Hz
Output Option 1	12.6V – 2A (Voltage: 10.8V–13V, Current: 0–2A)
Output Option 2	21V – 1A (Voltage: 18V–22V, Current: 0–1A)
Max Output Power	≤37.5W
DC Plug Size	5.5×2.1mm / 5.5×2.5mm
Plug Type	EU / US
Gross Weight	Approx. 100g
Certifications	CE, RoHS
Compatible Batteries	18650 Li-ion / Li-ion Battery Packs (12V & 18V)
Battery Included	No

⚠️ Important Note: This charger is designed specifically for compatible 18650 Li-ion battery packs as described. Actual output voltage and current may vary depending on the battery's charge state — these are not fixed values. Output performance may also differ when used with appliances of varying impedance. Please confirm compatibility before purchasing.

What's in the Box

1 × Lithium Battery Charger (battery NOT included)

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For information on battery and charger safety standards, visit the U.S. Consumer Product Safety Commission – Lithium-Ion Battery Safety.

Learn more: Battery charger

Frequently Asked Questions

Q: What battery packs is this 18650 lithium battery charger compatible with?

A: This charger is designed for 18650 Li-ion battery packs used in 12V and 18V cordless power tools such as screwdrivers and wrenches. The 12.6V 2A output suits 12V Li-ion packs (3S), while the 21V 1A output is suitable for 18V Li-ion packs (5S). Always verify your battery pack's voltage rating before use.

Q: Will this charger work in both the US and Europe?

A: Yes. The charger supports a wide AC input range of 100–240V at 50/60Hz, making it compatible with standard wall outlets in both the United States and Europe. Both EU and US plug types are available.

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

A: The built-in LED indicator shows a red light while charging is in progress. Once the battery reaches full charge, the light switches to green and the charger automatically stops charging — protecting your battery from overcharging.

Q: What DC connector size does this charger use?

A: This charger uses a standard DC barrel connector sized 5.5×2.1mm or 5.5×2.5mm, which is compatible with a wide range of power tool battery packs and accessories that use this common connector standard.