The car charger with a digital voltmeter that monitors your battery health
Planning a long road trip with the family? Whether you need to keep multiple devices powered up or want to keep a close eye on your car battery’s health, this multi-port car charger with a built-in digital voltmeter is the ultimate travel companion. It powers four devices simultaneously with genuine fast-charging speeds while providing a real-time voltage display directly from your cigarette lighter socket.
Note: The green USB3 port supports Quick Charge 3.0 and is backwards compatible with QC 2.0 and QC 1.0. The PD4 (USB-C) port utilises Power Delivery technology — perfect for modern smartphones and tablets that require native fast charging.
Why choose this model? (Key Benefits):
- Real-time digital voltmeter — Instantly monitor your car battery voltage to avoid unexpected breakdowns if it drops below 12V.
- USB-C Power Delivery (PD) — Charge your iPhone 15 or compact laptop at the maximum speed supported by your cable.
- Quick Charge 3.0 (Green Port) — Up to 4× faster than standard 5V/1A chargers, with automatic voltage adjustment for your device.
- 4 simultaneous ports — With 15A total output distributed intelligently, the QC and PD ports maintain their high-speed profiles regardless of other connected devices.
- 12V and 24V compatibility — Automatically detects voltage, making it suitable for cars, SUVs, vans, and HGVs.
- Scratch-resistant ABS + PC casing — Designed to withstand high cabin temperatures while maintaining a premium look for years.
Performance and Specifications
The two blue USB-A ports (USB1 and USB2) each deliver 5V / 2.4A — ideal for GPS units, smartwatches, or standard mobile devices. The green QC 3.0 port automatically negotiates the optimal voltage with your device: 5V/3A, 9V/2A, or 12V/1.5A. The USB-C PD port reaches up to 9V/2.5A or 12V/1.67A, ensuring a full fast-charging cycle for compatible tablets and phones. The LED display is more than just a feature; it provides live voltage readings, allowing you to see fluctuations caused by your alternator or the power draw of your devices.
| Parameter | Value / Detail |
|---|---|
| Input Voltage | 12V – 24V DC (Vehicle socket) |
| Casing Material | ABS + PC, scratch-resistant gloss finish |
| Number of Ports | 4 (3× USB-A + 1× USB-C) |
| USB1 – Blue | 5V / 2.4A – 12W (Standard) |
| USB2 – Blue | 5V / 2.4A – 12W (Standard) |
| USB3 – Green (QC 3.0) | 5V/3A · 9V/2A · 12V/1.5A – Quick Charge 3.0 |
| PD4 – USB-C (Power Delivery) | 5V/3A · 9V/2.5A · 12V/1.67A – Power Delivery |
| Total Combined Output | 5V / 15A maximum |
| Display | LED – Real-time digital voltmeter |
| Vehicle Compatibility | Cars, SUVs, Vans, Trucks (12V / 24V) |
Package Contents
- 1× Car charger with digital voltmeter and 4 USB ports (3× USB-A + 1× USB-C PD)
Frequently Asked Questions
Can I use all 4 ports at once without losing charging speed?
Yes. The charger provides a total of 15A at 5V, distributed intelligently. The QC 3.0 and PD ports maintain their dedicated voltage profiles regardless of how many other devices are plugged in.
Is this compatible with my iPhone?
Yes. The USB-C PD port is natively compatible with iPhone 15 and later models. For older models using a Lightning cable, simply connect your original Apple cable to either of the blue USB-A ports.
Does it work in a truck as well as a car?
It works in any vehicle with a 12V or 24V cigarette lighter socket, including cars, SUVs, vans, and trucks. The internal circuitry automatically detects the input voltage and adjusts accordingly.
What does the LED display tell me?
It shows your battery voltage in real-time. If the reading drops below ~12V while the engine is off, it may indicate a battery issue. If the voltage doesn’t rise to ~14V while the engine is running, your alternator may not be charging correctly.
Does it have overheating or overvoltage protection?
Yes. The ABS + PC casing ensures efficient heat dissipation, and the internal circuitry includes built-in overload protection. When used within the specified 12-24V range, it is safe for long-term use.
Product Gallery
**ss*** M*o** –
Super fast charging! I love that it shows the battery voltage—really handy to make sure the alternator is doing its job.