Can you charge laptop with usb is it real

Can you charge laptop with usb, yo, this ain’t just some random question, it’s like, the ultimate tech hack that can save your life when your battery’s low and you’re nowhere near a wall outlet. We’re diving deep into how this magic actually works, from the nitty-gritty of USB standards to the actual gear you need to make it happen.

Get ready to unlock a whole new level of portable power, Surabaya style.

So, basically, charging your laptop with USB is totally a thing, but it’s not as simple as just plugging in your phone. It all boils down to how much juice your laptop needs and how much power the USB port can actually dish out. We’ll break down the different types of USB, like USB-C, which is the real MVP for power delivery, and explain why some USB ports on your laptop are for charging and some are just for, like, plugging in your mouse.

Understanding USB Charging Capabilities for Laptops

The evolution of USB technology has extended its utility far beyond simple data transfer. Once confined to peripherals, USB ports are now increasingly capable of powering and charging our more demanding devices, including laptops. This shift is largely thanks to advancements in power delivery standards, making USB charging a viable and convenient option for many users.The fundamental principle behind USB charging for laptops relies on the USB Power Delivery (USB PD) specification.

While exploring modern connectivity, you might wonder, can you charge laptop with USB? Similarly, if you’re looking to expand your display options, understanding can i connect laptop to tv is quite useful. After handling external displays, it’s practical to know that many devices now support charging your laptop via USB-C.

This protocol allows for bidirectional power flow and significantly higher wattage compared to older USB standards. When a laptop supports USB PD, its USB-C port can negotiate with a compatible charger to draw the necessary power for charging, much like a traditional AC adapter.

USB Standards and Power Delivery

The capability of USB ports to charge laptops is directly tied to the specific USB standards they adhere to. Newer standards incorporate robust power delivery capabilities, distinguishing them from their predecessors.

The progression of USB power delivery can be understood through its various standards:

• USB 2.0: Limited to 500mA (0.5A) at 5V, insufficient for laptop charging.
• USB 3.0/3.1 Gen 1: Increased to 900mA (0.9A) at 5V, still not enough for most laptops.
• USB 3.1 Gen 2: Offers 1.5A at 5V, a slight improvement but inadequate.
• USB Battery Charging (BC) Specifications: Introduced higher current capabilities (up to 1.5A) for dedicated charging ports, but still not a universal solution for laptops.
• USB Power Delivery (USB PD): This is the crucial standard for laptop charging. USB PD allows for dynamic negotiation of voltage and current, supporting profiles that can deliver significantly more power. The latest USB PD 3.1 standard can support up to 240W (48V at 5A), a substantial leap that enables charging even power-hungry gaming laptops.

Common USB Ports and Their Charging Potential

Modern laptops feature a variety of USB ports, each with different charging capacities. Identifying these ports is key to understanding your laptop’s charging capabilities.

The primary ports to consider for laptop charging are:

• USB Type-A: While ubiquitous, standard USB Type-A ports on laptops typically only output power to charge smaller devices like smartphones or earbuds. They are not designed to draw significant wattage for laptop charging.
• USB Type-C: This is the port that revolutionized USB charging for laptops. Most USB Type-C ports on modern laptops, especially those supporting USB PD, can both receive and deliver power. When used for charging, a USB-C port can draw power from a compatible charger, with the wattage varying based on the laptop’s design and the charger’s capabilities.

Hardware Requirements for USB Charging

For a laptop to be chargeable via USB, specific internal hardware components and design considerations are necessary. This ensures safe and efficient power management.

Key hardware elements enabling USB charging include:

• USB Power Delivery Controller: A dedicated chip within the laptop that manages the USB PD protocol. This controller communicates with the charger to determine the optimal voltage and current for charging.
• Power Management Integrated Circuit (PMIC): This component regulates the incoming power from the USB-C port, distributing it to the battery and other system components.
• Robust Charging Circuitry: The laptop’s internal charging system must be designed to handle the higher power levels delivered via USB-C, ensuring the battery is charged safely and efficiently without overheating.
• Support for Higher Voltages: Laptops designed for USB PD charging can typically accept a range of voltages (e.g., 9V, 12V, 15V, 20V) negotiated by the USB PD controller, allowing for faster charging speeds.

Methods for Charging Laptops with USB

While understanding the capabilities of USB charging is crucial, knowing the practical methods available empowers users to leverage this technology effectively. This section details how to charge your laptop using various USB-based solutions, from the latest standards to portable power sources.

USB-C Power Delivery (PD) Charging Procedure

USB-C Power Delivery (PD) represents the most advanced and efficient method for charging laptops via USB. This protocol allows for higher power transfer and intelligent negotiation between the charger and the device, ensuring optimal charging speeds and safety.

1. Verify USB-C PD Compatibility: Ensure both your laptop and your USB-C charger support the USB Power Delivery standard. Look for the USB PD logo on your devices and charger. The wattage of the charger should also be sufficient for your laptop’s power requirements (e.g., 65W, 90W, or higher).
2. Connect the USB-C Cable: Use a high-quality USB-C cable rated for the power output you intend to use. Not all USB-C cables can handle the high wattage required for laptop charging; a cable rated for at least 60W or 100W is recommended for PD charging.
3. Plug the Charger into a Power Outlet: Connect the USB-C PD charger to a standard wall socket.
4. Connect the Cable to the Laptop: Plug the other end of the USB-C cable into the designated USB-C PD charging port on your laptop. Most modern laptops will automatically begin charging.
5. Monitor Charging Status: Check your laptop’s battery indicator to confirm that it is charging. Some laptops may display a notification indicating that fast charging is in progress.

USB Power Banks for Laptop Charging, Can you charge laptop with usb

USB power banks have become indispensable for mobile users, and some are now capable of charging laptops. However, their effectiveness is contingent on specific features and limitations.

To charge a laptop with a power bank, it must possess a high enough power output, typically achieved through USB-C PD. Standard power banks designed for smartphones will not suffice. The capacity of the power bank, measured in milliampere-hours (mAh) or watt-hours (Wh), will determine how many times or how much it can charge your laptop. For instance, a 20,000mAh power bank might offer a partial charge to a laptop with a 50Wh battery, while a 50,000mAh unit could provide a full charge or more.

It’s crucial to check the power bank’s specifications for its USB-C PD output wattage and ensure it matches or exceeds your laptop’s charging needs.

Dedicated USB Charging Stations

Dedicated USB charging stations are designed to manage the power needs of multiple devices simultaneously, including laptops. These stations often feature a variety of ports, including high-wattage USB-C PD ports specifically for laptops, alongside standard USB-A ports for smaller electronics.

These stations are particularly useful in shared workspaces, households with many gadgets, or during travel. They consolidate power delivery, reducing the number of individual chargers and power adapters needed. Advanced charging stations may incorporate smart charging technology to distribute power efficiently among connected devices, prioritizing those with higher power demands or faster charging capabilities. This ensures that your laptop receives the necessary power without compromising the charging speed of other connected devices like tablets, smartphones, or smartwatches.

Power Flow Diagram: USB Source to Laptop

The process of charging a laptop via USB involves a controlled flow of electrical energy from a power source to the device’s battery. Understanding this flow helps in appreciating the technology behind USB charging.

The diagram illustrates a simplified power flow. The journey begins at the USB Power Source, which could be a wall adapter, a car charger, a power bank, or even another laptop acting as a host. This source converts the incoming electrical power (e.g., AC from a wall outlet or DC from a battery) into a stable DC voltage suitable for USB communication and power transfer.

This power then travels through a USB Cable, which acts as the conduit. The cable must be robust enough to handle the required current and voltage. At the receiving end, the Laptop’s Charging Circuitry, often managed by the USB-C PD controller, receives the power. This circuitry then regulates the voltage and current to safely charge the laptop’s internal battery. The communication protocol, especially with USB-C PD, ensures that the source and the laptop negotiate the appropriate power level, preventing overcharging or damage.

Component	Function	Example
USB Power Source	Provides electrical energy.	USB-C PD Wall Adapter (e.g., 65W)
USB Cable	Transmits power and data.	USB-C to USB-C Cable (rated for 100W)
Laptop Charging Circuitry	Regulates power and charges the battery.	Internal Power Management IC and Battery Charging Controller

Compatibility and Limitations of USB Laptop Charging

While the convenience of charging a laptop via USB is undeniable, understanding its capabilities and limitations is crucial to avoid frustration and potential damage. Not all USB ports are created equal, and the power they deliver varies significantly, directly impacting charging speed and even the ability to charge at all. This section delves into the nuances of USB laptop charging, highlighting what to expect and what to watch out for.The evolution of USB standards has brought about substantial improvements in power delivery, but it’s essential to differentiate between these standards and the hardware they connect to.

A basic USB-A port from an older generation will offer a vastly different charging experience compared to a modern USB-C port supporting Power Delivery (PD).

USB Charging Speed Comparison

The charging speed when using USB for laptops is primarily determined by the USB standard and the power output capabilities of both the source (charger/port) and the device (laptop). Generally, newer USB standards offer higher power output, leading to faster charging.Here’s a comparison of common USB charging methods and their typical power outputs:

• USB 2.0: Offers a maximum of 500mA (0.5A) at 5V, totaling only 2.5W. This is too low to charge most laptops and is primarily for data transfer or charging small devices.
• USB 3.0/3.1 Gen 1: Provides up to 900mA (0.9A) at 5V, delivering 4.5W. Still insufficient for laptop charging.
• USB 3.1 Gen 2 (USB 3.2 Gen 2): Can deliver up to 3A at 5V, reaching 15W. This is a significant improvement but still on the lower end for many laptops.
• USB Power Delivery (USB PD) via USB-C: This is the game-changer. USB PD is a specification that allows for dynamic negotiation of power levels between devices. It can support a wide range of voltages and currents, typically ranging from 5V up to 20V, and currents from 1A up to 5A. This allows for power outputs of up to 100W, and with the latest USB PD 3.1 specification, even up to 240W.

  This is sufficient for most modern laptops, including power-hungry gaming or workstation models.

It’s important to note that these are theoretical maximums. Actual charging speeds will depend on the specific implementation by the laptop manufacturer and the charger. For instance, a laptop might support USB PD but be limited by its internal charging circuitry to a maximum of 65W, even if the charger can provide 100W.

Common Issues in USB Laptop Charging

Users often encounter several common problems when attempting to charge their laptops using USB, primarily stemming from power limitations and compatibility mismatches.Some prevalent issues include:

• Slow or No Charging: This is the most frequent complaint. It occurs when the USB port or charger does not provide enough power to meet the laptop’s demands. A laptop’s battery charging circuitry often requires a minimum wattage to initiate charging, and older or standard USB ports simply cannot deliver this.
• Charging Intermittently: Sometimes, a laptop might start charging but then stop. This can happen if the power source is unstable or if the laptop’s power management system detects that the power draw is too high for the available source, leading it to disconnect.
• Device Not Recognized or Charging Error: Some laptops are designed to only accept charging through specific ports or via proprietary chargers. Using a generic USB charger might result in the laptop not recognizing it as a valid power source, displaying an error message, or refusing to charge altogether.
• Overheating: While less common with modern USB PD, attempting to draw excessive power from an under-specced USB port or charger can lead to overheating of both the source and the connected device, posing a potential safety risk.

Laptop Charging Ports and Their Capabilities

Not all USB ports on a laptop are designed for charging the device itself. Manufacturers strategically designate certain ports for specific functions to manage power distribution and prevent accidental damage.The distinction usually lies between:

• Standard USB-A Ports: Typically, these ports are designed primarily for data transfer and powering external peripherals like mice, keyboards, or external hard drives. While they might offer some trickle charge to a connected device, they are generally not powerful enough to charge the laptop’s battery. Some laptops may have one or two USB-A ports that are “always on” or have higher output for charging phones, but this is usually indicated by a battery icon next to the port.

• USB-C Ports with Power Delivery (PD): These are the ports designed for bidirectional power flow, meaning they can both supply power and receive power. When a USB-C port supports Power Delivery, it can accept a high wattage input from a compatible charger, enabling it to charge the laptop efficiently. It’s crucial to check the laptop’s specifications to confirm if a particular USB-C port supports PD input.

  Some laptops might have multiple USB-C ports, but only one or a few might be designated for charging.

• Proprietary Charging Ports: Many laptops, especially older models or high-performance machines, still utilize dedicated DC-in ports for their chargers. These ports are specifically designed to handle the high wattage requirements of the laptop and are not interchangeable with USB ports.

Laptop Power Requirements and USB Charging

The power requirements of laptops vary significantly based on their model, intended use, and internal components. This directly dictates their compatibility with USB charging methods.Here’s a breakdown of how laptop power needs relate to USB charging capabilities:

• Ultra-portable Laptops and Ultrabooks: These devices typically have lower power demands, often ranging from 30W to 65W. They are the most likely candidates to be successfully charged via USB-C PD, provided they have a USB-C port that supports charging input.
• Mainstream Laptops: Standard laptops for general productivity and moderate tasks usually require between 45W and 90W. Many of these can be charged using USB-C PD with a sufficiently powerful charger (e.g., 65W or 90W PD charger).
• Gaming Laptops and High-Performance Workstations: These power-hungry machines often require 100W, 130W, or even more to operate and charge their batteries effectively. While USB PD 3.1 now supports up to 240W, not all laptops are equipped to utilize this full potential, and many still rely on their proprietary AC adapters for optimal performance and charging. Even with 240W PD, a laptop might still be designed to draw its maximum power from a dedicated DC input for peak performance.

It’s essential to consult your laptop’s user manual or specifications to determine its exact power requirements and whether it supports charging via USB-C PD. Attempting to charge a high-wattage laptop with a low-wattage USB charger will either result in extremely slow charging, no charging at all, or even prevent the laptop from operating at full performance.

The maximum wattage a laptop can draw via USB-C PD is a negotiation between the charger and the laptop. If either device cannot support a certain power level, the connection will default to the lower supported wattage.

Essential Accessories for USB Laptop Charging: Can You Charge Laptop With Usb

To fully leverage the convenience of charging your laptop via USB, having the right accessories is paramount. These components ensure efficient power delivery, portability, and compatibility, transforming your USB-C port into a versatile charging solution. Selecting the appropriate charger, power bank, and cable can make the difference between a slow trickle of power and rapid, reliable charging.The following sections detail the key accessories that will enable you to harness the full potential of USB laptop charging, ensuring you’re always powered up, whether at home, in the office, or on the move.

Recommended USB-C PD Chargers for Laptops

USB-C Power Delivery (PD) chargers are the cornerstone of modern USB laptop charging. These chargers intelligently negotiate power output with your device, delivering the optimal wattage for fast and safe charging. When selecting a USB-C PD charger, several key features warrant attention to ensure it meets your laptop’s demands.Key features to look for in a USB-C PD charger include:

• Wattage: This is the most critical factor. Your laptop’s original charger will specify its wattage (e.g., 65W, 90W, 100W). Choose a USB-C PD charger with at least the same wattage, or ideally, slightly higher, to ensure efficient charging. A charger with insufficient wattage will charge very slowly or may not charge at all while the laptop is in use.

• USB PD Compliance: Ensure the charger explicitly states support for USB Power Delivery (USB PD) standards, typically USB PD 3.0 or higher, which allows for dynamic power negotiation.
• Number and Type of Ports: Many chargers offer multiple ports, including USB-A and additional USB-C ports. Consider how many devices you typically charge simultaneously and if you need ports for other accessories.
• GaN Technology: Gallium Nitride (GaN) chargers are more compact and efficient than traditional silicon-based chargers, making them ideal for portability without sacrificing power.
• Brand Reputation and Safety Certifications: Opt for reputable brands known for quality and safety. Look for certifications like UL, CE, or FCC, which indicate that the charger has met rigorous safety standards.

High-Capacity USB Power Banks for Extended Laptop Charging

For users who frequently work away from power outlets, a high-capacity USB power bank is an indispensable accessory. These portable batteries can store a significant amount of energy, allowing you to recharge your laptop multiple times on a single charge of the power bank. The capacity is typically measured in milliampere-hours (mAh).Examples of high-capacity USB power banks suitable for extended laptop charging often feature:

• Capacity: Look for power banks with capacities of 20,000 mAh or higher. Some premium models can reach 30,000 mAh or even 50,000 mAh, capable of fully recharging even power-hungry laptops multiple times. For instance, a 26,800 mAh power bank can typically provide one to two full charges for a standard ultrabook.
• Output Ports: Ensure the power bank has at least one USB-C PD output port capable of delivering sufficient wattage for your laptop. Some also include USB-A ports for charging other devices.
• Recharge Speed: Consider how quickly the power bank itself can be recharged. Some high-capacity units support fast input charging, often via USB-C PD, allowing them to be replenished more quickly.
• Pass-Through Charging: This feature allows you to charge the power bank and a connected device simultaneously from a single wall outlet.
• Airline Regulations: Be aware of airline restrictions on lithium-ion batteries. Most power banks under 27,000 mAh are generally permitted in carry-on luggage.

The Importance of Choosing the Correct USB Cable

While often overlooked, the USB cable plays a crucial role in the speed and safety of laptop charging. Not all USB-C cables are created equal; their specifications directly impact power delivery capabilities and data transfer rates. Using an underspecified cable can severely limit charging speed or even prevent charging altogether.The importance of choosing the correct USB cable for efficient and safe laptop charging stems from several factors:

• Power Delivery (PD) Rating: USB-C cables have different PD ratings, indicating the maximum wattage they can safely handle. A cable rated for 60W will not support charging a laptop that requires 100W. Look for cables explicitly stating support for higher wattages (e.g., 100W, 240W E-Marker cables).
• Wire Gauge: The thickness of the internal wires (gauge) affects the cable’s resistance and its ability to carry current. Thicker wires (lower gauge number) are better for high-power charging.
• E-Marker Chip: For cables supporting over 60W, an Electronic Marker (E-Marker) chip is often integrated. This chip communicates the cable’s capabilities (like maximum wattage and data speed) to the connected devices, ensuring safe and optimal power delivery.
• Durability and Build Quality: A well-built cable with reinforced connectors and a robust jacket will withstand daily wear and tear, ensuring longevity and preventing charging interruptions due to cable damage.
• Data Transfer Speeds: While primarily focused on charging, many USB-C cables also support high-speed data transfer (e.g., USB 3.1, USB 4, Thunderbolt). If you plan to use the cable for data, ensure it meets your speed requirements.

Comparison of USB Adapters for Laptop Charging

While direct USB-C PD charging is ideal, various USB adapters can facilitate charging from different power sources or for older devices. Understanding their functions and limitations is key to choosing the right solution.

Accessory Type	Primary Function	Key Considerations	Example Use Case
USB-C PD Charger	Delivers high wattage for charging	Wattage, Port Type, Brand Reputation, GaN Technology	Rapid charging of compatible laptops directly from a wall outlet.
USB Power Bank	Portable power source	Capacity (mAh), Output Ports, Charging Speed, Pass-Through Charging	Charging on the go without access to a wall outlet, providing multiple recharges.
USB-C Cable	Transmits power and data	Gauge, Length, PD Rating (e.g., 60W, 100W, 240W), E-Marker Chip, Durability	Connecting a USB-C PD charger or power bank to a compatible laptop for power and data transfer.
USB-A to USB-C Adapter/Cable	Connects USB-A power sources to USB-C devices	Limited Power Output (typically 5-15W), Data Speed	Charging older devices or a laptop very slowly from a standard USB-A port on a computer or power bank. Not suitable for significant laptop charging.
Multi-port USB Hub with PD Passthrough	Expands connectivity and allows charging	PD Input Wattage, Number and Type of Ports (USB-A, HDMI, Ethernet), Brand	Connecting peripherals to a laptop while simultaneously charging the laptop through the hub using a single USB-C port.

Troubleshooting Common USB Charging Problems

While the convenience of charging laptops via USB is undeniable, encountering issues can be frustrating. This section delves into common problems that may prevent your laptop from charging through a USB port and provides systematic steps to diagnose and resolve them. Understanding these troubleshooting methods can save you time and potential repair costs.Diagnosing why a laptop is not charging via a USB port requires a methodical approach.

It’s crucial to isolate the problem, whether it lies with the cable, the power source, the laptop’s port, or its software configuration. By systematically checking each component, you can pinpoint the source of the charging interruption.

Identifying Faulty USB Cables and Power Adapters

USB cables and their associated power adapters are frequent culprits when charging malfunctions occur. Physical damage, internal wiring issues, or insufficient power output can all lead to charging failures. Thorough inspection and testing of these accessories are the first steps in resolving USB charging problems.To check for faulty USB cables or power adapters:

• Visual Inspection: Carefully examine the USB cable for any signs of fraying, cuts, bent pins, or damage to the connectors at either end. Similarly, inspect the power adapter for cracks, burns, or loose connections.
• Cable Swapping: If possible, try using a different, known-working USB cable of the same type (e.g., USB-C to USB-C, USB-A to USB-C) with your laptop and power source. This helps determine if the original cable is the issue.
• Adapter Testing: If your laptop came with a specific USB power adapter, test it with another compatible device that supports USB charging. If it doesn’t charge other devices, the adapter is likely faulty.
• Power Output Verification: For USB-C Power Delivery (PD) chargers, ensure the adapter’s wattage is sufficient for your laptop’s charging requirements. Some laptops require higher wattage than standard phone chargers can provide. Check your laptop’s specifications for the recommended adapter wattage.

Verifying Laptop USB Port Functionality

The USB port on your laptop itself can sometimes be the source of charging problems. Issues can range from minor debris obstructing the connection to hardware failure. Testing the port’s ability to deliver and receive power is essential for a comprehensive diagnosis.Methods for verifying if the laptop’s USB port is functioning correctly for charging include:

• Connecting Other Devices: Plug in a known-working USB device, such as a flash drive, external hard drive, or a smartphone, into the USB port in question. If these devices are not recognized or do not receive power, it indicates a potential problem with the port itself.
• Testing Different Ports: If your laptop has multiple USB ports, try charging your laptop using each one. If only one port fails to charge, the issue is likely specific to that port. If all ports fail, the problem might be more systemic.
• Listening for Sounds: When you plug in a USB device or charger, some operating systems play a sound to indicate connection. The absence of this sound, coupled with no charging indication, can be a sign of a port issue.
• Checking for Physical Damage: Inspect the USB port for any bent pins, debris, or signs of physical damage that might prevent a secure connection. Gentle cleaning with compressed air can sometimes resolve issues caused by dust.

Updating Laptop Drivers for USB Power Delivery

Outdated or corrupted drivers can interfere with how your laptop manages power delivery through its USB ports. Specifically, drivers related to the USB controllers and chipset can impact charging capabilities. Keeping these drivers updated is a crucial step in resolving software-related charging issues.The process for updating laptop drivers that might affect USB power delivery involves:

• Device Manager Access: On Windows, right-click the Start button and select “Device Manager.”
• Locating USB Controllers: Expand the “Universal Serial Bus controllers” section. You will see various entries related to your USB ports and hubs.
• Driver Updates: Right-click on each relevant USB controller entry (e.g., “USB Root Hub,” “Generic USB Hub,” or specific Intel/AMD USB host controller entries) and select “Update driver.” Choose “Search automatically for drivers” to let Windows find the latest ones.
• Chipset Driver Updates: It’s also advisable to update your laptop’s chipset drivers, which often manage power-related functions. Visit your laptop manufacturer’s support website and download the latest chipset drivers for your specific model.
• Reinstalling Drivers: If updating doesn’t help, you can try uninstalling the USB controller drivers (right-click and select “Uninstall device”) and then restarting your laptop. Windows will typically reinstall the drivers automatically upon reboot.

Epilogue

At the end of the day, charging your laptop with USB is a legit game-changer, whether you’re using a beefy power bank or a tricked-out USB-C charger. Just remember to check your laptop’s specs and grab the right accessories, and you’ll be powered up and ready to roll, no sweat. It’s all about being smart with your tech, so you can stay connected and keep doing your thing, wherever you are.

Query Resolution

Can I use any USB port on my laptop to charge it?

Nah, not all USB ports are created equal, dude. Usually, only specific USB-C ports that support Power Delivery (PD) or certain USB-A ports with higher wattage ratings can charge your laptop. Other ports are typically just for connecting peripherals like mice or keyboards.

How do I know if my laptop supports USB charging?

Check your laptop’s manual or the manufacturer’s website. Look for mentions of USB-C Power Delivery (PD) support or specific wattage requirements for charging. Some laptops will even have a little lightning bolt icon next to the USB-C port.

Will charging my laptop with a USB power bank be as fast as a wall charger?

It depends on the power bank and your laptop. High-end USB-C PD power banks can be pretty fast, but generally, a dedicated wall charger designed for your laptop will provide the quickest charge. Power banks are awesome for topping up or when you’re in a pinch.

What happens if I use a USB cable that’s not rated for high wattage?

Using a low-quality or under-rated USB cable can be a major bummer. It might charge your laptop super slowly, not charge it at all, or even overheat and damage your devices. Always go for cables that are specifically rated for Power Delivery and the wattage your laptop needs.

Can I charge my laptop while I’m using it with a USB charger?

Yeah, most of the time, you can. If your laptop supports USB charging and you’re using a charger with enough power, it should both charge the battery and power your laptop simultaneously. If the charger’s wattage is too low, it might just slow down the battery drain instead of charging.