To číslo batérie je len odhad
A phone's battery percentage is not a direct measurement, but an estimate calculated from voltage and current readings.
Before you read
Before you read
To číslo batérie je len odhad. Označ kamaráta, ktorý panikári pri desiatich percentách. Telefón ti ukazuje percento batérie, pekné, presne vyzerajúce číslo priamo v rohu obrazovky. Pôsobí to ako holý fakt.
Nie je to priame meranie. Neexistuje jednoduchý spôsob, ako otvoriť batériu a odčítať, koľko energie v nej ešte zostáva. Telefón namiesto toho sleduje napätie a tok elektriny cez batériu a tieto hodnoty potom preženie malým programom, ktorý zvyšok odhadne podľa toho, ako sa podobné batérie zvyčajne správajú.
Preto to číslo môže čudne poskakovať, v mraze rýchlo padať alebo trčať na jednom percente oveľa dlhšie, než by si čakal. Samotná batéria nie je pokazená. Telefón len háda, tak starostlivo, ako len vie, a svoj odhad prepisuje každých pár sekúnd.
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