You don’t need to charge your new phone for eight hours before first use
Despite the advancement in battery technology, consumers are still told to charge their new smartphone for at least 8 hours before using it for the first time. The rationale behind this is to ensure your phone charges to its maximum capacity (100%) and that it will be able to reach this level for each subsequent charging cycle.
This is true of phones that used Nickel Cadmium batteries, which retained a memory of its initial charge state. Thankfully, Lithium-ion or Lithium-ion Polymer (LiPo) are not susceptible to this memory effect. In fact, you are free to use your smartphone the moment it’s taken out of the box. Charge it only when the battery runs low.
At said time, charge the battery till it’s full, then you are free to unplug it without fearing any “memory effect” repercussions. That said, it is advisable, for the sake of battery health, that you do not let your charge levels dip below 20% or charge state rise above 95% for extended periods of time. This will ensure that your battery’s full charging capacity can be maintained for a longer period of time.
Unlike older battery technology, lithium-ion batteries count a charge cycle differently. As you know, every battery has a finite lifespan (number of useful charging cycles). A charge cycle is defined by how much of the battery’s 100% capacity you’ve used. For example, if you used 35% of charge and decided to plug it in (65% charge remaining) and charge it to 100%, this isn’t considered as 1 cycle.
Instead, for the battery to complete said 1 cycle, you would also need to deplete the 65% charge that was available before you plugged the phone in (entire 100% of previous charge state).
The simple answer here is that you no longer need to charge your phone for 8 hours or more for the first time or during subsequent charging cycles. Besides having smarter batteries, the software built into our phones helps monitor the charge state and charging rate to extend their lifespan for as long as possible.
Sony and Apple have trickle charging tech built into their phones. They will allow batteries to charge quickly to 90% then slow down the charging rate (trickle charge) as it nears 100%. This is done based on your settings or on your alarm timer. This way, you aren’t purposefully wasting electricity and diminishing battery health.
Fill to maximum capacity: It is a good idea to charge your new phone to 100% battery life before using it for the first time after it has been unboxed. This ensures that you start with a full battery and makes it possible for the phone’s battery management system to correctly calibrate itself.
Avoid overcharging: In contrast to prior battery technology, modern smartphones have complex charging circuitry that prevent overcharging. As soon as the battery is fully charged, the charging process will stop, so there is no need to worry about overcharging.
Unplug when full: Normally, once your phone has attained 100% charge, it is best to unplug it from the charger. Long periods of time with a fully charged battery can lead to unnecessary tension. If you need to leave the phone charging overnight, think about using a smart socket that can turn the electricity off after the phone is fully charged.
Cycles of recurrent charging: It is advisable to charge your phone whenever you can rather than letting it run completely flat. The battery’s overall health may benefit more from frequent, quick charges of 20% to 80% than from occasional, deep discharges.
Don’t become too hot: High temperatures might shorten a battery’s lifespan. To avoid overheating, set your phone down on a flat, well-ventilated surface and avoid using it.
Balance a battery: Some experts suggest calibrating your phone’s battery on a regular basis by letting it go down to 0% and then charging it back up to 100%. Modern cellphones often feature sophisticated battery management systems, making this strategy largely ineffective.
It’s a good idea to fully charge your new phone before using it for the first time. However, there is no need to be concerned about charging it for a long time. Adopting appropriate charging practices, such as avoiding extreme charge levels and keeping the device away from excessive heat, is the most important part of battery care. You can make sure that the battery in your new phone operates at peak efficiency and lasts as long as possible according to these instructions.
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