Things to know about lithium-ion batteries and how to avoid battery bottles

These are scientifically based anti-battery methods based on the characteristics of lithium-ion batteries.

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Battery bottles are an obsession for users of electronic devices such as smartphones, tablets or laptops . There are also a lot of information about using smartphones for the long-term battery, however Most of these instructions require turning off this feature or removing the other application. As a result, users will not get the full power that smartphones bring.

Instead of the instructions above, PhoneArena page offers a number of features and tests for lithium-ion batteries . From there give practical advice and have a course to protect the battery.

Features of lithium-ion batteries

1. Charging voltage affects battery life

According to empirical data when charging a battery with a maximum voltage of 4.2V, the battery will have a cycle of 300-500 times and the utilization rate reaches 100% if charged by the correct voltage of 4.2V.

The relationship between charging voltage, usage cycle and battery performance.

In the case of charging with a lower voltage (4.1V), the battery will reach 600-1,000 cycles of use but the efficiency is only 90%.

In case of charging with lower voltage (4V), the usage cycle increases to 1,000-2,000 and the efficiency drops to 80%.

Similar to the case of 3.92V is 2,400 - 4,000 cycles and 75% of performance.

2. The relationship between discharge and battery capacity

Your battery will last longer if you charge it more often and avoid draining energy . The table below shows the battery cycle corresponding to another discharge before the battery capacity is reduced by 30%.

The relationship between battery discharge rate and usage cycle.

For example, if you often discharge the phone battery to 0%, it will only reach 300-500 cycles before being reduced to 70% of storage capacity. Conversely, if you charge the battery regularly, it will serve you longer.

Advice

1. Charge multiple times instead of fully charged

Instead of charging 100% of the battery for each charge, you should only charge to a certain extent , for example 30% to 60% or 45% to 79%. This will be a little troublesome due to charging many times a day, but it can help extend battery life.

2. Do not drain the battery

Always keep some of the energy in the battery instead of draining to 0% before recharging. That energy can help manage the cells in the battery while waiting for users to plug in the charger.

3. Battery works best at 40%

The best state of lithium-ion batteries is when there is 40% energy left. That's why batteries in newly shipped devices often contain 40% - 50% of the energy.

4. Avoid high or low temperatures

The battery can take up to 80% of its operating capacity if left at 60 degrees C for 1 year, while at 20 degrees C, the capacity is reduced by only 20% respectively. Similarly, too low temperatures such as in freezing environments are not good for battery life.

5. Do not let the battery run out of energy for too long

Normally, lithium-ion batteries will be in a state of energy exhaustion if they fall to a voltage of 3V / cell. At 2.7V / cell, the protection circuit will automatically switch the battery to sleep mode, making it lose its ability to charge over time.

Therefore, during use or when you want to store the battery, you should also pay attention to the recommended capacity of 40%.