Car Charger BLOW M18A with USB and USB-C ports and built-in voltmeter

BLOW M18A is a car charger that supplies power to smartphones, tablets and other USB devices through one USB‑A port and one USB‑C port while integrating a built‑in voltmeter to display vehicle battery voltage in real time. The device is compact and plugs into the vehicle’s 12 V socket, enabling simultaneous charging of two devices and continuous monitoring of the electrical system to help identify under‑ or overvoltage conditions.

Advantages

The charger combines dual output convenience with an integrated voltmeter, allowing users to charge two devices at once while keeping an eye on battery voltage. Its USB‑C output supports modern fast‑charging protocols for compatible devices, and the USB‑A port provides universal compatibility with legacy cables and accessories. The compact design and plug‑and‑play operation require no additional installation, and the voltage display offers immediate feedback on the vehicle’s electrical status.

Suitable for

• Charging smartphones and tablets on the go
• Powering GPS devices, dash cameras and portable accessories
• Monitoring car battery voltage during short trips and long drives
• Using older USB‑A cables alongside newer USB‑C devices

Key specifications

• Dual output: one USB‑A port and one USB‑C port
• Integrated digital voltmeter for real‑time voltage readout
• Designed for 12 V vehicle sockets (cigarette lighter socket)
• Simultaneous charging of two devices
• Compact plug‑in form factor for in‑car use

How to use

Insert the BLOW M18A into the vehicle’s 12 V socket until it is firmly seated. Connect your devices using appropriate USB‑A or USB‑C cables to the corresponding ports. The voltmeter display will show the vehicle battery voltage automatically while the charger is powered by the socket. Remove the charger from the socket when the vehicle is turned off for extended periods to avoid parasitic drain.

Usage recommendations

Use manufacturer‑approved cables for best charging efficiency and proper thermal performance. Regularly check the voltmeter reading to detect abnormal voltage levels; readings significantly below or above the nominal range may indicate battery or charging system issues that require professional inspection.