3.7V Single Li-ion Battery Charger

The 3.7V Single Li-ion Battery Charger is a compact charger designed for charging single-cell 3.7V lithium-ion rechargeable batteries, such as 18650, 21700, 26650, 14500, 16340, and 10440 cells. It features automatic charging control, LED charging indicators, and overcharge protection, making it ideal for safely charging rechargeable lithium-ion batteries used in flashlights, DIY electronics, power banks, and portable devices.

Features

• Full Name: 3.7V Single-Slot Li-ion Battery Charger
• Compatible with multiple Li-ion battery sizes
• Automatic CC/CV charging
• LED charging status indicator
• Overcharge protection
• Compact and lightweight design
• Easy battery insertion and removal
• Plug-and-play operation

Specifications

Applications

• Charging 18650 batteries
• Charging 21700 batteries
• Charging 26650 batteries
• DIY electronics
• Power banks
• Flashlights
• Emergency lighting
• Portable electronic devices

Advantages

• Automatic charging control
• Safe and reliable operation
• Compact and portable
• Supports multiple battery sizes
• Easy to use
• LED charging status indication
• Cost-effective

Size

Package Includes

• 1 × 3.7V Single Li-ion Battery Charger

Note: This charger is designed for 3.7V lithium-ion batteries with a 4.2V full-charge voltage. Do not use it to charge 3.2V LiFePO₄ batteries, as they require a different charging voltage (3.65V maximum) and a compatible LiFePO₄ charger. Always insert the battery with the correct polarity before charging.