1. Power Rating

When you look at your charger, you’ll notice a tiny label that contains input levels. This rating ensures that your charger will not blow up if your country has a normal household voltage between 100 and 240 volts. However, using a charger rated only at 110v in a socket rated at 220v will cause the circuit breaker to trip. You’ll also need to check the output amperage. If your phone requires 1A and your charger only supplies 500mA, you’ll experience slow charging, overheating, or total device breakdown.

2. USB Specifications

Currently, there are three USB specifications: USB 2.0, USB 3.0, and USB 4.0, each carrying its own power specification. USB 2.0 has a power output of 500mA, while USB 3.0 can go up to 1500mA. If you’re using a USB charger, the cable’s specification and the source of the charging will influence how fast your phone charges. Charging using your laptop’s USB port will take longer than using a wall charger.

3. Charger Quality

Cheap chargers often lack worldwide certifications that ensure they are safe and in good working condition. Certified chargers usually have smart circuitry to regulate how your phone charges at different times and your device’s battery percentage. They also have overcharge and discharge protection. A charger with a smart circuitry will know when your phone is fully charged and automatically stop outputting power.

4. Charger Build

Breaking cables, fraying collars, and bent tips are common defects we have to endure with charging cables. The constant tug and pull, twisting, and every other abuse will degrade the quality of your cable over time. A charger expected to last one year with regular use may become damaged after a few months. Using a charger with a better collar build and stronger cable material will prevent this.

No matter how good your charger is, it won't last forever if you don’t take care of it. So it's crucial to keep your chargers in a safe place when you are not using them. If you have the AVI magnetic type c cable or AVI USB 2.0 cable ,clean the tips regularly to prevent dirt from interfering the current-flow. By doing these simple things you can help prolong the life of your cable and save yourself the hassle of having to replace it frequently.