1. Charging
When batteries are left unused for a period of time, they enter a dormant state, at which point their capacity is lower than normal, and their usage time is also shortened. However, lithium-ion batteries are easily activated; they can be activated and restored to normal capacity after just 35 normal charge-discharge cycles.
2. Battery activation
Regarding the activation of lithium-ion batteries, many people claim that charging time should exceed 12 hours, repeated three times, to activate the battery. This claim of charging for more than 12 hours for the first three times is clearly a continuation of the practice used with nickel batteries (such as nickel-cadmium and nickel-metal hydride). Lithium-ion batteries and nickel batteries have very different charging and discharging characteristics, so this claim is incorrect. Generally, the charging method described in the phone's instruction manual is the standard charging method suitable for that phone.
3. Does trickle charging really exist?
Lithium-ion battery phones and chargers automatically stop charging once the battery is fully charged; there is no trickle charging for over 10 hours as claimed by nickel-cadmium chargers. Leaving the battery on the charger after it's fully charged is pointless. Furthermore, no one can guarantee that the battery's charge/discharge protection circuitry will remain unchanged or that its quality will be flawless, so your battery will be constantly teetering on the edge of danger. This is another reason why we oppose prolonged charging.
4. Is longer charging time always better?
On some mobile phones, if the charger is not removed after a certain charging time, the system will not only not stop charging, but will also begin a discharge-charge cycle. This is obviously detrimental to the lifespan of the battery and the phone/charger. Furthermore, long charging times often occur overnight, and given the state of my country's power grid, voltage is often higher and fluctuates significantly at night in many areas.
