4.2V 1A Li-Ion Charger – 3.5x1.35mm Connector

Safe Charger for 3.7V Lithium-Ion Batteries

Choose this high-performance 4.2V 1A Li-ion charger. This power supply is ideal for charging a 1S lithium battery.

Thanks to its advanced technology, this Li-ion charger ensures a stable power supply for your 3.7V nominal batteries.

The CC/CV smart charging system ensures optimal current management. It effectively protects your cells from overcharging.

A built-in two-color LED lets you instantly see the charging status. You'll no longer risk leaving your devices plugged in unnecessarily.

Technical Specifications of the 4.2V 1A Li-ion Charger

• Type: Professional lithium-ion battery charger with a rugged housing. Ideal for heavy daily use.

• Input voltage: 100–240 V AC (universal) for easy use anywhere in the world. Maximum electrical reliability guaranteed.

• Frequency: 50–60 Hz. This standard setting ensures full compatibility with standard household outlets and power grids in France.

• Precise output voltage: 4.2 V DC

• Output current: 1A (1000mA). This power output allows for fast, consistent charging of your batteries without causing the device to overheat.

• Power output: 4.2W. Power consumption remains very low while offering top-tier energy efficiency for your projects.

• Cylindrical connector: 3.5 × 1.35 mm. Be sure to check the dimensions of your female port to ensure a smooth insertion with no play.

• Polarity: positive in the center / negative on the outside. This is the most common connection type for today's small, rechargeable portable devices.

• Charging technology: Automatic CC/CV. This cycle preserves the chemical life of your cells by preventing sudden voltage spikes.

• LED indicator signals: Red indicates that charging is in progress. Green indicates that charging is finally complete and successful.

Battery Compatibility

This accessory is designed for all 3.7V lithium-ion batteries. It is ideal for compact 1S Li-ion battery packs.

It charges 18650 batteries in a single-cell configuration. It can also be used with flashlights and various Li-ion devices.

WARNING: Absolutely not suitable for NiMH rechargeable batteries or standard lead-acid batteries.

Do not attempt to charge LiFePO4 batteries with this equipment. Multi-cell packs exceeding 4.2 volts are also incompatible.

Main Applications

Lamps and Portable Lighting

A must-have for your rechargeable flashlights and powerful LED headlamps. A handy tool for your outdoor activities.

Solar Lighting

Perfect for maintaining your standalone solar lights equipped with an internal 3.7V Li-ion battery. Keep your home well-lit.

Electronic equipment

Use this wall outlet adapter for your favorite DIY modules. It efficiently powers all your latest portable electronics projects.

Built-in Security

Security is our top priority. This compact product features rugged components designed to provide long-lasting protection for all your sensitive equipment.

Enjoy complete protection against short circuits. The built-in system also prevents any form of dangerous thermal overload.

Precise voltage stabilization prevents current spikes. Enjoy an intelligent and completely reliable automatic charging cycle.