Effortlessly charge your custom 18650 lithium battery packs from any standard USB port. This smart charging cable takes a 5V USB input and converts it to the correct voltage for your battery pack, making it a perfect solution for your DIY projects, portable devices, and custom electronics.

Key Features:

• Convenient USB Charging: Power up your lithium batteries from a USB wall adapter, power bank, or computer. No need for bulky, dedicated chargers.
• Multiple Voltage Options: Choose the correct voltage for your battery configuration:
• • 4.2V: For single-cell (1S) lithium battery packs.
  • 8.4V: For two-cell (2S) lithium battery packs.
  • 12.6V: For three-cell (3S) lithium battery packs.
• Smart Charging Indicator: An integrated LED shows the charging status at a glance. The light is red while charging and turns green when the battery is fully charged.
• Wide Compatibility: The output features a standard 5.5x2.5mm DC barrel plug, which is also compatible with the common 5.5x2.1mm size.

How to Use:

1. Connect the USB-A end to a 5V USB power source (2A recommended for best performance).
2. Select the cable with the correct output voltage for your battery pack.
3. Plug the DC barrel connector into your battery pack's charging port.
4. The red light indicates charging is in progress. The light will turn green when charging is complete.

Specifications:

• Input: USB 5V / 2A
• Output Voltage: DC 4.2V, 8.4V, or 12.6V (select option at purchase)
• Maximum Output Current: 1A
• Input Connector: Standard USB 2.0 Type-A Male
• Output Connector: DC Barrel Plug 5.5mm x 2.5mm (also fits 5.5mm x 2.1mm)
• Polarity: Center Positive (+) / Outer Negative (-)
• Cable Length: Approx. 100cm (1 meter)
• Color: Black

Package Includes:

• 1 x USB to DC Charging Cable (in your chosen voltage)

Please Note:

• To ensure stable performance, please use a USB power source with a 2A output.
• It is crucial to select the correct voltage for your battery pack. Using the wrong voltage can damage your batteries.