Can Fast Charging Damage Your Phone’s Battery?

by | Apr 22, 2023

Fast charging is a promising feature that is advertised on today’s smartphones.If your device supports it and you have a charger that can output the required wattage, fast charging is a simple way to charge your phone’s battery.Does fast charging, on the other hand, shorten the life of your battery?Let’s take a look at what’s going on here.

Fast charging a phone isn’t inherently dangerous to the battery.The underlying issue is heat generation, which has been reduced by manufacturers. A standard charger produces 5 to 10 watts of power. This can be improved by up to eight times with a quicker charger.

The Programmable Power Supply (PPS) and USB Power Delivery (USB-PD) 3.0 protocols are used by smartphone makers to give rapid charge to their phones’ batteries. These methods provide power at the proper voltage and current to prevent battery degeneration.

Fast charging is only possible for a limited amount of time on a smartphone battery. Lithium-ion batteries that charge quickly work in three stages. The first phase sends a burst of electricity to the battery, which is either empty or nearly empty. This provides you a 50 percent to 70 percent charge in the first 10, 15, or 30 minutes. It is because batteries may absorb a charge quickly during the first phase of charging without causing long-term damage to their health. Secondly, a constant current condition in which the voltage gradually increases, and a final constant voltage state in which the current is gradually reduced to prevent overcharging and battery cell damage.

Most smartphone makers advertise a fast charging window, like “charge to 50% in 30 minutes because fast charging only works in a steady current state. Charging resumes at the regular rate after the final constant voltage phase begins.

Fast charging is primarily focused on electric car batteries, which are far larger than those found in smartphones, according to most research. The studies suggest that some fast charging methods damage the cell significantly faster than regular charging in extreme temperatures. Using your phone in extreme heat or cold, or leaving it in direct sunlight, might harm the battery.

Reserve fast charging for times when you need your smartphone charged quickly to get the most out of your battery. When you have more time on your hands, use a normal charger.