The lithium battery used in mobile phone is marked with "3.6V & nbsp; 900mA · H", where Ma · h is the unit of physical quantity charge. Please estimate the energy that this battery can store______ J．

The lithium battery used in mobile phone is marked with "3.6V & nbsp; 900mA · H", where Ma · h is the unit of physical quantity charge. Please estimate the energy that this battery can store______ J．

900mAh  900 × 1 × 10-3a × 3600s = 3240c, the battery can store electric energy w = uit = UQ = 3.6V × 3240c = 1.1664 × 104j

The lithium battery used on the mobile phone is marked with "3.6V & nbsp; & nbsp; 900mA. H". Please estimate the energy that this battery can store______ J．

According to the definition formula of current I = QT: q = it = 900mAh = 900 × 1 × 10-3a × 3600s = 3120c, the battery can store electric energy w = uit = UQ = 3.6V × 3120c = 11232j

The lithium battery used on the mobile phone is marked with "3.6V, 900mAh". If it can be used for three days with one charge, what is the average working current of the mobile phone

The average working current is 900 / 72 Ma, which is 12.5 ma. MAH is the unit of electric quantity, not current. 900 MAH means to discharge with 900 Ma for one hour, discharge with 300 Ma for three hours and discharge with 100 Ma for nine hours

There is a lithium battery for mobile phone, which is marked with a voltage of 3.7V and a capacity of 1130ma · h. after it is fully charged, it will be stored for about 30 minutes______ Electric energy

∵ I = QT, ∵ after the mobile phone lithium battery is fully charged, the amount of charge stored: q = it = 1130 × 10-3a × 3600s = 4068c, the work done by the charging current: w = uit = UQ = 3.7V × 4068c = 15051.6j, that is, about 4.18 × 10-3kw · h of electric energy is stored. So the answer is: 15051.6j