Question Very basic inquiry regarding laptop batteries.
Question Very basic inquiry regarding laptop batteries.
If you have a 90wh battery with 15.4v and 5845mah, you realize it can power your laptop at 90 watts for an hour. But is that the upper limit? I’m not sure how electricity works like a running faucet—I’m confused about the limits. Can it actually produce more power by changing amps or resistance, or something else? I know my PC can handle 130 watts to the CPU and 110 watts to the GPU when plugged in. Could it technically run at that level for a short time, even if it’s not? What factors are preventing it from working properly, whether it’s software, resistors, or the battery itself? How does charging affect the different parts of the electrical system? Do watts remain constant while amps drop and volts rise? Or are amps and volts fixed, and watts decrease as the battery drains? I’m just trying to understand what’s stopping my PC from operating normally. Thanks.
Yeah, the calculation comes to 15,4 Volts times 5,845 Amps, which equals a maximum of 90,013 Watts. If the battery is of good quality, it should have built-in electronics that prevent you from exceeding those voltage and amperage limits, ensuring safety. However, if it's a low-quality battery, it might allow higher values, causing overheating or even an explosion.
The battery's voltage drops as the connected device draws power, which in turn reduces the maximum possible watts. This behavior is controlled through Windows settings, where you can switch to performance mode and keep the CPU at full capacity for longer periods. Sometimes this setting is also found in the laptop's BIOS.
From what I've gathered online, using volts times amps gives a good estimate, but 5845mah equals about 5.8 amps, which caps the power at 90 watts. I didn't fully grasp these details until I checked the power plan options in Windows and changed the minimum power state for balanced modes from the default 5% to 100%, aligning everything more clearly. Then I explored performance and turbo settings, and the optimal choice turned out to be Manual on the default level, but adjusting it to 5% in Windows instead of 100% helped avoid overloading the base overclocks.