Choosing a car charger and EV charger: how to compare power, connections and safety

A car charger and EV charger may seem straightforward to choose at first glance. Yet many motorists buy a model that is not compatible with their phone, laptop, vehicle socket or electrical installation. A high wattage on the packaging does not automatically mean that your device will charge at that speed.

The main pitfalls are:

• Confusing total power with power per port. A 160 W charger may distribute the available power across several connections.
• Overlooking charging protocols. A USB-C port does not automatically mean that your smartphone, tablet or laptop supports the maximum charging speed.
• Connecting EV chargers without checking the installation. A portable 3.7 kW or 7 kW EV charger places greater demands on a socket and circuit than a standard USB car charger.
• Focusing only on features such as an app. Wi-Fi, Bluetooth and an LCD screen are useful, but say nothing about whether the connection is suitable or what charging capacity the car supports.

First decide which type of charger you need

A USB car charger uses the 12V or 24V socket in a car, van, lorry or boat. This type is suitable for smartphones, sat-navs, tablets and sometimes laptops. An electric car charger or EVSE charges the traction battery of an electric car or plug-in hybrid via a Type 2 connection.

Use this classification as a starting point:

• USB car charger: for phones, tablets and accessories.
• USB-C car charger: suitable for devices with USB-C and often supports Power Delivery.
• Laptop car charger for cars: check that the output power and USB-C profile match the laptop.
• Portable EV charger: for charging via a suitable socket, while travelling or as an additional solution.
• Type 2 EV charger: for electric cars and plug-in hybrids that use the European IEC 62196-2 Type 2 standard.
• Wallbox: a fixed charging solution, such as a 22 kW wallbox, for which the electrical installation and vehicle compatibility must be checked.

Three specifications you should not overlook

1. Power and current

With a USB car charger, power is expressed in watts. A fast car charger of 30 to 45 W may be suitable for many smartphones and tablets. Laptops often require more. Do not look only at “160 W total”; also check the power per port and the output when several ports are used at the same time.

For EV chargers, the common levels are:

• 3.7 kW: approximately 230 V and 16 A on a single phase.
• 7 kW: usually approximately 32 A on a single phase.
• 11 kW: generally three phases of up to 16 A.
• 22 kW: generally three phases of up to 32 A.

The actual charging speed also depends on the car’s onboard charger, battery status and electrical installation. A 22 kW charger will therefore not automatically deliver 22 kW to every car.

2. Connection and charging protocol

A USB-C charger may support Power Delivery, but check whether your device uses the relevant profile. The cable must also be suitable for the required power. For example, the Baseus Mini White Series cable used with the PrimeTrip VP2 is specified for up to 60 W and 20 V/3 A.

For EVs, check whether the car uses a Type 2 connector for AC charging. Also pay attention to the type of mains plug. A Type F plug must be connected directly to a suitable, earthed socket. Do not use unapproved adapters or extension leads.

3. Safety features and operating environment

For a 12V car charger, protection against overheating, short circuits and overcurrent are important features. With an EV charger, earth-leakage detection, overtemperature protection, overvoltage and undervoltage protection, and a suitable IP rating are all important.

An IP65 or IP66 rating describes protection against dust and water under certain conditions. It does not mean that you can use the charging unit underwater. Always check the manual and inspect the cable, plug and connector before use.

Recommendations by user profile

Suitable for: Budget-conscious beginners

Baseus PrimeTrip VP2 Car Charger 45W

Why it suits this profile: According to the product specification, this 12V car charger operates at DC 12–24V and delivers up to 45 W via USB-C. The included USB-C-to-USB-C cable makes it practical for everyday commuting.

How this product avoids the pitfall

The stated power and supported voltage profiles are clearly specified. However, check that your phone or tablet supports USB-C Power Delivery.

Key benefit & advantages

45 W maximum USB-C output; 1-metre cable included; suitable for 12–24V.

Suitable for: Buyers seeking premium quality

ATSHARK K006S 160W Car Charger

Why it suits this profile: Commuters carrying several devices get three ports, two built-in cables and an included 100W E-Marker cable. The product specification states that it supports 12V and 24V vehicles.

How this product avoids the pitfall

The fuse warning prevents you from focusing solely on the high total figure. Check the vehicle documentation when using several ports at high power simultaneously.

Key benefit & advantages

Two USB-C ports and one USB-A port; two 90 cm cables; maximum total output according to the product specification: 160 W.

Suitable for: Specialist use & intensive users

TDC ENERGY SNK03 Portable EV Charger, Type 2, 3,5 kW

Why it suits this profile: This portable EV charger is designed for charging via a suitable 230V Type F socket. The current can be set to 8, 10, 13 or 16 A, which is useful when the circuit capacity is known.

How this product avoids the pitfall

The adjustable current helps prevent charging at 16 A by default. Only use the charger with a suitable earthed socket and have the installation checked if in doubt.

Key benefit & advantages

3,5 kW maximum; 5-metre cable; Type 2 connector; LCD screen; Wi-Fi and Bluetooth according to the product information.

Suitable for: Specialist use & intensive users

feyree 7KW Type2 Cable 1Phase EV Portable Charger

Why it suits this profile: This 7 kW EV charger is intended for users with a suitable single-phase installation and CEE connection. According to the product information, the current can be adjusted from 8 to 32 A.

How this product avoids the pitfall

The adjustable current allows you to match the charger to the installation. Have the CEE connection, wiring and circuit checked to ensure they are suitable for the selected setting.

Key benefit & advantages

Up to 7 kW and 32 A according to the product specification; 5-metre cable; LCD screen; Type 2 compatibility; IP65 rating.

Frequently asked questions about car chargers and EV chargers

Can I use a 12V car charger in a 24V vehicle as well?

Only if the product specification states 12–24V. A Xiaomi car charger with a specified input of 12V/24V or a Baseus car charger with DC 12–24V is intended for this purpose according to the stated specifications. Always check the onboard voltage of a lorry or other commercial vehicle.

How much does it cost to use an EV charger?

The cost depends on the charging power, charging time and electricity tariff. A 3.7 kW charger running at maximum power uses more electricity per hour than one operating at a lower current setting. The car also determines how much energy is actually drawn. For a practical calculation, use the car’s consumption in kWh and multiply it by your current tariff.

How long does a portable EV charger or USB car charger last?

Its service life depends on heat, moisture, pulling forces and how often the cable is connected. Store an EV charger in a dry place, coil the cable without sharp bends and never use a damaged plug or connector. With a retractable car charger, such as a model from ATSHARK or Oxerbog, do not pull the cable beyond its physical stop. Stop using it immediately if you notice unusual heat, a damaged casing or a burning smell.