Is fast charging your smartphone bad for its battery?


Fast charging is a convenient way to top up your phone’s battery, provided your device supports it and you have a charger that can deliver the required wattage. But does this time saver negatively impact battery life?

Charging works in stages to protect the battery

Fast charging is not inherently dangerous for your phone’s battery. Fast chargers cannot “overload” a battery, as the smartphone will only draw as much power as the device can handle. This means you can safely use a USB charger that will pump out more wattage than your device’s maximum charging speed.

A smartphone battery can only use fast charging for a limited time. This is because lithium-ion batteries charge in three stages: a slow “trickle charge,” a constant current state where the voltage increases over time, and a final constant voltage state where the current is slowly reduced to prevent overcharging and damage the battery cell. to prevent .

Fast charging only works during constant power state. That’s why many smartphone manufacturers advertise with a fast charging window, e.g. “charge up to 50% in 30 minutes” or something similar. Once the final constant voltage phase begins, charging will resume at the standard speed.

Fast charging can generate more heat

The faster energy is stored in the lithium-ion cell, the more heat is generated. This means that fast charging generates more heat than standard “slow” charging. This can be a problem as excessive heat will corrode lithium-ion batteries. Fast charging can shorten battery life compared to using a standard charger.

Most studies on the heat generated by fast-charging lithium-ion cells have focused on electric vehicle batteries, which are much larger than the batteries in smartphones. The results of these studies suggest that some fast charging methods break down the cell much faster than standard charging.

Since extreme temperatures are the enemy of any lithium-ion battery, using your phone in very hot or cold environments or leaving your device in direct sunlight can damage the battery.

To get the most out of your battery, reserve fast charging for the times when you need to quickly charge your smartphone. At other times when you have time to spare, use a standard charger.

Smartphone batteries are replaceable

Replacing a smartphone battery is relatively affordable compared to the price of a new phone. Apple charges $49 to $69 (depending on the device) for an out-of-warranty battery replacement, which will restore your device to like-new condition in terms of battery performance.

Many Android devices have easily accessible user-replaceable batteries, while others can be serviced by the manufacturer or a third party for a modest fee. Both iPhones and Android devices can be serviced by the user with a new battery using parts and manuals available from resources such as iFixit.

Batteries deteriorate over time, even with ideal use. It can be helpful to understand when it’s time to replace your battery (and how it can give you a performance boost).

The best phone chargers of 2022

USB C Charger TECKNET 65W PD 3.0 GaN Charger Type C Foldable Adapter With 3 Port Fast Wall Charger Compatible For iPhone 13 Pro Max/13 Pro/13/13 Mini, MacBook Pro, iPad Pro, Switch, Galaxy S21/S20

Apple 20W USB-C Power Adapter

Amazon Basics 100W Four-Port GaN Wall Charger w/ 2 USB-C Ports (65W + 18W) and 2 USB-A Ports (17W) – White (Non-PPS)

Anker Wireless Charger, 313 Wireless Charger (Pad), Qi Certified 10W Max for iPhone 12/12 Pro/12 mini/12 Pro Max, SE 2020, 11, AirPods (No AC Adapter, Not Compatible with MagSafe Magnetic Charging)

USB C Car Charger 48W Super Mini AINOPE Full Metal Fast USB Car Charger Adapter PD&QC 3.0 Dual Port Compatible with iPhone 13 12 11 Pro Max X XR XS 8 Samsung Galaxy Note 20/10 S21/20/10 Google Pixel

Techsmarter 11-port charging station with 100W five USB-C PD, PPS 25/45W, five 18W USB-A ports and 15W detachable wireless charger. Compatible with MacBook, iPad, iPhone, Samsung, Dell, HP, Yoga…

This post Is fast charging your smartphone bad for its battery?

was original published at “”