If you reverse the connection of the battery charger you will discharge the battery. You may be able to correct the connection and charge it properly, or the battery may be ruined.
When it is charging the screen reads: Battery Charging. When it is fully charged it reads: Battery Charged.
The Alternator.
With the proper charging equipment, yes.
The Alternator.
The Alternator.
it means it still charging, when fully charged that will turn into a cord plug
Can You Charge...Yes. As a matter of fact, in order to charge a battery, the charging voltage HAS to be greater than the charged battery's voltage or no current will flow and charging cannot happen.Of course, the charging voltage cannot be excessive, or damage to the battery being charged will result.In your question, 4.6 volts is not excessive for a 4.2 volt battery.
NO, a 12 volt battery cannot be charged with a 6 volt charger. To charge any battery, the charging voltage has to be, at least, slightly higher than higher than the voltage of the battery. Current flowing through the battery is what accomplishes the charging, and no current will flow at or below the voltage of the battery to be charged.
Altenator is not charging battery!!
Yes, rechargable batteries tend to get warmer when charged.
The charging time for a 3.7-volt battery depends on its capacity (measured in milliamp hours, or mAh) and the current of the charger used. For example, a 1000mAh battery charged with a 500mA charger would take approximately 2 hours to fully charge. However, charging times can vary based on the specific battery chemistry and charger efficiency. Always refer to the manufacturer's specifications for the most accurate charging times.
The phone will go flat quickly. When charged it'll never switch from "charging" to "charged". Or it'll say that charging is complete real fast, even when starting from a flat battery.