https://nalar.dev/tags/battery-life/ Recent content in Battery Life on Nalar Hugo en-us Sat, 05 Sep 2026 00:00:00 +0700 https://nalar.dev/tech/why-a-power-bank-does-not-deliver-its-full-rated-capacity-to-your-phone/ Sat, 05 Sep 2026 00:00:00 +0700 https://nalar.dev/tech/why-a-power-bank-does-not-deliver-its-full-rated-capacity-to-your-phone/ <p>A 10,000 mAh power bank might seem as though it should recharge a phone with a 5,000 mAh battery exactly twice. In real use, it usually cannot. That does not automatically mean the power bank is defective or that its capacity rating is false.</p> <p>The apparent mismatch comes from comparing two battery capacities without accounting for voltage, energy conversion, and the power consumed while charging. A power bank stores energy in its internal battery, converts that energy into a form the phone can accept, and the phone converts it again as it charges its own battery. Each stage has limits and losses.</p> https://nalar.dev/tech/what-battery-saver-mode-changes-on-your-device/ Fri, 04 Sep 2026 00:00:00 +0700 https://nalar.dev/tech/what-battery-saver-mode-changes-on-your-device/ <p>A phone or laptop can sometimes keep running noticeably longer after you turn on its battery-saving mode. Nothing has added energy to the battery, so where does the extra runtime come from?</p> <p>Battery saver modes work by changing how the device spends the energy it already has. They reduce or delay work that is not essential right now and may lower the power used by the display or processor. The exact changes depend on the device and operating system, which is why battery saver can feel almost invisible on one device and more restrictive on another.</p>