Multi-Voltage 2000mA DC Power Adapter Li-Ion Battery Charger

Keep your lithium-ion batteries topped up safely and efficiently with this versatile Multi-Voltage DC Power Adapter. Delivering a selectable output of 4.2V, 8.4V, 12.6V, or 16.8V at 2000mA, this compact charger is engineered for 18650 and similar Li-ion battery packs. Its universal AC 100–240V input means it works seamlessly whether you're at home or travelling internationally.

Key Features

• Multi-Voltage Output: Selectable 4.2V / 8.4V / 12.6V / 16.8V DC output to match your specific battery configuration (1S, 2S, 3S, or 4S Li-ion packs).
• 2000mA Charging Current: Delivers a steady, controlled current for efficient and safe battery charging.
• Universal AC Input: Compatible with AC 100–240V mains power, suitable for use worldwide.
• Input Over-Current Protection: Built-in fuse automatically cuts off if input current exceeds 2A, protecting against circuit abnormalities and fire risk.
• Output Current Protection: Charging current is intelligently limited within a safe range to preserve battery health and extend battery lifespan.
• 40–1000VA Capacity: Supports a broad operating range including 40VA type configurations.
• 4 Color Options: Choose from four available color variants to suit your preference.
• Plug-and-Play Ready: No complicated setup — ready to use straight out of the box.

Specifications

• Input Voltage: AC 100–240V
• Output Voltage: 4.2V / 8.4V / 12.6V / 16.8V DC
• Output Current: 2000mA (2A)
• Compatible Battery Types: Li-ion / 18650 battery packs (1S–4S)
• Capacity Range: 40–1000VA (includes 40VA type)
• Color Options: 4 available

Who Is This For?

This adapter is ideal for electronics hobbyists, DIY enthusiasts, and professionals who work with multi-cell lithium-ion battery packs. Whether you're charging drone batteries, portable power stations, LED lighting packs, or custom 18650 battery arrays, this adapter provides the flexibility and built-in safety features you need.

For guidance on electrical safety and safe use of power adapters and charging equipment, refer to the U.S. Consumer Product Safety Commission – Electrical Safety resource.

Frequently Asked Questions

Q: What battery types is this multi-voltage DC power adapter compatible with?

A: This DC power adapter is designed for Li-ion and 18650-type lithium battery packs. With selectable output voltages of 4.2V, 8.4V, 12.6V, and 16.8V, it supports 1S, 2S, 3S, and 4S battery configurations, making it highly versatile for a wide range of devices and DIY electronics projects.

Q: What safety protections does this charger include?

A: The adapter features built-in input over-current protection — if the input current exceeds 2A, a fuse automatically cuts off to prevent circuit abnormalities. It also includes output current limiting to keep charging current within a safe range, protecting battery integrity and extending overall battery lifespan.

Q: Can I use this power adapter when travelling internationally?

A: Yes. The universal AC 100–240V input makes this adapter compatible with mains power supplies found around the world, so you can use it at home or abroad without needing a voltage converter.

Q: Is this adapter ready to use out of the box?

A: Absolutely. The multi-voltage DC power adapter is plug-and-play — simply connect it to a compatible battery pack and plug it into the mains. No complicated configuration is required.