That’s why it’s important to choose the right docking station to suit your needs. Of course, not every setup is going to need multiple 4K external displays and a bucketload of Thunderbolt 4 ports. Possibilities that can result in your laptop sitting at the heart of a multi-display, productivity-focused workstation or as the backbone to a fully-realized, gaming battle station. Don’t let the limited number of ports on your device restrict its potential, investing in a docking station opens up a world of possibilities. Now, assume the same situation, but with the 100W dock, you'd have to draw 50W from the battery, this means that it will only last you 2h as opposed to 5h.The best docking stations can transform your laptop, or tablet, into something so much more. With a 100Wh battery, you will in theory be able to draw 20W from it for 5h before it dies. Assume the battery is 100Wh (it's actually 97, but it's close enough). It will draw 130W from the charger and an extra 20W from the battery. Let's assume you have the stock 130W charger and the laptop is drawing 150W. To give an example (using totally random numbers for the sake of the example). If this happens with the 15s, it means that with a 100W charger, the battey will be used more to account for the missing 30W on top of whatever else the system needs past 130W. I don't know if the / Precision 5550 does it but the / Precision 5750 draws more than 130W under load, so the laptop uses the battery as well. From P=IV you can see that over time the total power will drop. The closer the two voltages get to each other, the less and less current you have until it eventually reaches 0A. As long as there is a difference between the charger voltage and the battery voltage, current will flow. We know the voltage is constant, so only the current can change.Ĭhargers work by bringing the battery voltage to the same level as the charger voltage. You have to remember that Power = Current x Voltage. 100W doesn't mean that it will always force 100W into the device, it just means that the device can draw upto that amount. I think people misunderstand the ratings on chargers. ![]() The dock comes with a 130W brick as extra headroom to account for any losses in the brick or the dock and for any powered ports that the dock might have. Using 100W is harmless, it will just charge the battery more slowly than the stock 130W charger. USB-C is officially rated at 100W, Dell push their chargers to 130W. Don’t editorialize titles or submit clickbait.ĭell Global: Manuals, Drivers, Hot Topics, and Top Solutionsĭell support on Twitter: product support:.No reposts, spam, self-promotion or rehosted content. ![]() No offensive, hateful, or low-effort comments. ![]()
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