4.2V 500mA Charger for 18650 Flashlights and Headlamps

Keep compatible rechargeable lights powered with this 4.2V 500mA charger designed for single-cell 3.7V lithium-ion battery devices. Ideal for many 18650-powered flashlights and headlamps, it provides a regulated 4.2V output for convenient direct charging. Available connector options make it easier to match different charging ports, while US and EU plug variants suit different outlets. A built-in indicator light lets you quickly check charging status.

Key Features

• 4.2V DC, 500mA output for compatible lithium-ion devices.
• Designed for many 18650 battery chargers applications, including flashlights and headlamps.
• Available with 3.5mm or 5.5mm barrel connector options.
• 100-240V AC input supports convenient home or travel use.
• LED indicator displays charging status.
• US or EU plug options depending on selection.

Why Choose Our 4.2V 500mA Charger

This compact flashlight charger adapter offers a simple replacement for a lost or damaged compatible charger. The indicator light provides an easy visual charging check, while multiple connector options help accommodate different rechargeable lighting devices.

Perfect For

• 18650-powered flashlights
• Rechargeable LED headlamps
• Compatible 3.7V lithium-ion devices
• Replacement charging needs
• Home, workshop, and travel use

Product Specs

Output: DC 4.2V, 0.5A
Input: AC 100-240V
Connector: 3.5mm or 5.5mm depending on variant
Plug: US or EU depending on selection
Indicator: LED charging light

Important

Confirm your device requires 4.2V/500mA and verify the connector size and polarity before ordering. Use only with compatible rechargeable lithium-ion devices; connector size alone does not guarantee compatibility.

Keep Your Rechargeable Lights Ready

Replace your missing charger and keep compatible flashlights and headlamps powered for whenever you need them.