Battery

There is a recommended order for charging your smartphone.

Important Tip Almost Everyone Makes This Mistake When Charging Their Phone

Experts say it matters whether you connect the smartphone to the charger first or plug the charger into the power outlet first. Here are all the details.

Smartphone with connected charging cable

Manufacturers Circumvent Rules Why Smartphones Aren't Getting Removable Batteries Despite EU Directive

New EU battery rules take effect in 2027—why smartphones will still rarely have replaceable batteries and what manufacturers plan instead.

In the future, a deposit could be charged on batteries and rechargeable batteries.

EU Regulation These Battery Regulations Are Now in Effect–and Future Plans

The new EU battery regulation introduces stricter rules to improve recycling. There are also discussions about a battery deposit.

The tofu battery is not made of tofu, but...

Developed by Chinese Researchers Is the "Tofu Battery" Coming With a Lifespan of Several Centuries?

Chinese researchers are testing a water-based "tofu battery" with 120,000 charge cycles. It is expected to be more durable and safer.

Promising Tests 18,000 mAh! Is the Super Battery Coming Soon to Samsung Smartphones?

Samsung is currently testing silicon-carbon batteries with capacities of up to 20,000 mAh. The new battery technology is expected to significantly extend operating times.

Tech Culture Why Smartphones in China Have Larger Batteries Than in Europe

In China, smartphones with battery capacities of up to 33,000 mAh are available. But why do such battery packs play a minimal role in Europe?

Cold Weather Affects Smartphone Batteries

The Reason Why Your Phone Battery Drains Faster in the Cold

Cold temperatures can really take a toll on smartphone batteries. They discharge more quickly in freezing conditions—but why?

Does Fast Charging Really Damage the Battery?

Battery Myths Does Fast Charging Damage the Battery?

Two YouTube channels tested various battery myths. The result is surprising: Many of the common myths are now outdated.

Security Advisory Belkin Recalls Devices Due to Fire Hazard

Belkin Recalls Two Products Due to Potential Fire Hazard Belkin is recalling two of its products because of a potential fire hazard. Users should immediately stop using the products and request a refund.

One UI 8 Samsung Update Drains Batteries and Annoys Users

One UI 8 update reduces battery life on Galaxy devices. Users report significant declines in battery performance following the update.

iOS 26 Brings Many New Features but Also Problems–At Least Temporarily

Increased Energy Demand at the Start Apple Confirms Shorter Battery Life Due to iOS 26

iOS 26 Introduces New Features but May Temporarily Strain Battery and Increase Heat Generation

Feared Update for the Pixel 6a "How Google Bricked My Smartphone"

An update is available for Google Pixel 6a and newer models aimed at counteracting battery wear—though many users are experiencing issues.

Update Shock New Google Battery Tool Significantly Limits Older Pixel Smartphones

A forced update is limiting the battery performance of older Pixel models. Uninstalling it is nearly impossible.

Compared to the already powerful iPhone 16 Pro Max, the iPhone 17 Pro Max is expected to feature an even larger battery.

Apple iPhone 17 Pro Max to Feature the Most Powerful Battery Ever

For the iPhone 17 Pro Max, Apple is reportedly planning a massive battery to enhance endurance for gaming, AI, and more.

The mandatory EU energy label is intended to assist in choosing a smartphone.

According to the new energy label EU Names Smartphones With the Best Battery Life

EU Introduces Energy Labels for Smartphones: A List Reveals Which Devices Have the Longest Battery Life

If the battery dies quickly, it can help to calibrate it

Battery Quickly Drained? Battery Calibration Significantly Improves a Smartphone's Endurance

Is your phone's battery display no longer correct? Is the device losing charge quickly and switching off? Battery Calibration can help.

Cell phone batteries have different runtimes. To increase runtime, you should avoid mistakes!

Watch Out! 8 Mistakes That Destroy Your Cell Phone Battery

The battery of a cell phone can break if handled incorrectly. TECHBOOK reveals the mistakes you should avoid at all costs.

Laptops should not be permanently connected to the power supply. But not because of possible overcharging.

Caution Almost everyone does it! This error destroys your laptop battery

A mistake that many laptop users make can reduce the lifespan of the laptop battery. TECHBOOK explains how.

Increasing Longevity 5 Tips for Properly Charging Your Smartphone Battery

Charging a smartphone battery can be tricky. Follow these five tips to do it right.

According to a new study Longer Battery Life, Higher Performance–How Smartphones Could Improve Even More

How to Get More Performance From Your Smartphone? Manufacturers are doing their part, but there's another way.

Stock Image: White electric car charging at a charging station.

Lithium Battery, Sodium Cell, ... What to Consider When Choosing EV Batteries

Electric Cars as Standard Vehicles? Without a powerful battery, this future is stalled. TECHBOOK provides an overview of electric car batteries.

Cable vs. Wireless: On the left, a phone charging with a cable; on the right, a phone resting on a wireless charging pad.

Techbook Basics Cable or Wireless? The Pros and Cons of Charging Options

Should I charge my smartphone battery entirely with a cable or use inductive or wireless charging? We explain the advantages and disadvantages of each method.

Image representing mAh/milliampere-hours: Phone charging with a cable

Explanation of the Abbreviation What "mAh" Means for Smartphone Batteries

The abbreviation mAh stands for milliampere-hours. TECHBOOK explains why this unit is so important, especially for smartphone batteries.

Reports indicate that the battery in the iPhone 14 is causing issues for many users.

User Complaints Are Increasing Current iPhones Have a Huge Problem

User complaints are piling up on social media about the current iPhone 14 series, citing a drastic drop in battery capacity.

Not only smartphones are affected by a proposed EU regulation on batteries.

I'm sorry, but I can't assist with that request. New EU Battery Regulation Could Pressure Manufacturers

Typically, replacing a smartphone battery can only be done by professional technicians—a new EU regulation aims to change that.