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How do phones measure battery level?
- Short answer: the battery pack or the android main board has a “battery fuel gauge” IC which keeps track of the charge state of battery.
- bq27200 is an example of a battery fuel gauge IC.
- Well noted.
- batteries discharge in a non-linear fashion, with respect to voltage.
- @navigator, it might as well be magic.
What is high state of charge in battery?
The state of charge is defined as the ratio of the available capacity Q(t) and the maximum possible charge that can be stored in a battery, i.e., the nominal capacity Qn. A fully charged battery has SOC 1 or 100% while a fully discharged battery has an SOC of 0 or 0%.
How does the state of charge of a battery work?
State of Charge, as the name implies, tells you the state of a battery, and more specifically, the charge remaining in a battery, at a given moment. Commonly abbreviated as SOC, it is the equivalent of a fuel gauge for the battery pack in an electric vehicle or hybrid vehicle. Another closely related term to SOC is Depth of Discharge (DOD).
How can you tell the charge of a battery?
Voltage curves in most batteries follow a non-linear curve against state of charge. Unless you’re at the very ends of the charge or discharge curve, the voltage actually doesn’t change very much – this means that it’s pretty hard to know the difference between a 60% charged battery and a 40% charged battery.
What does the state of charge tell you?
State of Charge, as the name implies, tells you the state of a battery, and more specifically, the charge remaining in a battery, at a given moment. Commonly abbreviated as SOC, it is the equivalent of a fuel gauge for the battery pack in an electric vehicle or hybrid vehicle.
Can a SoC determine the charge of a battery?
There are a few other methods that can be used to determine the state of charge of a battery, but none of them is perfect, and each offers a unique set of problems. So, it should always be considered that SOC determination methods can provide only an estimate of the state of charge of a battery, and not a 100% accurate value.