With the evolution of smart phones, there have been numerous articles on the best way to reduce battery drainage, what apps onto your phone drains your battery faster, so on and so on. At the end of the day, it always comes down to the battery. What bullets would be to firearms, the battery is to your smart phone?
What we’re trying to say is, these rechargeable batteries, without which we’re socially impaired in today’s world are still an important device in our smart phone. Since we cannot tune out the programs (to conserve battery), which makes smart phones smart, we can always resort to using mobile USB battery chargers or Power Banks.
Smart Phone users are rapidly gravitating towards Power Banks since they’re mobile and can be easily charged with all the phone charger, mobile USB port and chargers supplemented by the device as well. For the more ecologically inclined crowd, you will find likewise Solar powered Power banks.
These rechargeable batteries of Power Banks comprise of both Lithium ion and their capacity is measured in Milliampere-hour (mAh), though these terms have a tendency to intimidate us, however, these are extremely basic and simple qualities that we need to know before we delve into measuring the power of our portable USB chargers.
Milliampere-hour (mAh) is nothing but a thousandth of an ampere hour, which is a unit of electric charge, equal to the charge transferred by a continuous current of one ampere flowing for one hour.
Since the Power Bank shops power in the form of DC current, it clearly charges your Smart Phones much faster compared to AC chargers a.k.a the Smart Phone chargers which accompany your Phone, reason being those AC chargers because they transfer AC current to DC, the flow of current is not stable, thus takes longer to charge than a Power Bank which charges your phone with its DC output signal and with its continuous flow charges your devices considerably more efficiently and faster.
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It is a myth when some Power Bank companies claim that their products provide a 92%mAh conversion. The conversion rate is the remaining capacity of this battery after some part of it is missing in heat or PCB. This 92 percentage conversion claim is not possible because the conversion rates of the batteries count on the input signal voltage and power dissipation as pointed out earlier, because of which the exact same mobile USB charger will charge quicker through a phone charger but takes a longer time to charge through a computer USB port. In reality conversion rates produced by Lithium Ion batteries is just 75 percent to 80 percent.
As soon as we consider the power of a Power lender, we must take into account the actual capacity of their batteries, for instance, if a mobile USB charger with a 10000mAh (Actual Capacity) claims to control your Samsung S5 with a battery capacity of 2800 mAh up to 5 times, then it is not a justified claim as considering an average conversion rate of 80% of the its battery, even if we apply this simple formula we expect to know that in reality, the device with its real capacity of 10000mAh can simply charge the phone up to two times.
REAL CAPACITY * conversion rate * phone battery health / phone capacity = total charge times
EXAMPLE:10000 x 0.8 x 0.8 / 2800= 2.28(approx 2 times)
Electric circuit protection blows off the power source once your phone is totally charged, its lack leads to reverse current in the device, which in turn will damage your phone/tablet/MP3 player.
Always purchase a mobile USB charger with a Lithium Ion battery however they are expensive but are much safer since they generate less heat, the battery capacity is lasting and they come with a battery protection circuit, as mentioned earlier which safeguards your smart phone from overcharging and short-circuit.
So be intelligent and powerful with the Power Bank, select the right one and enjoy your smart phone without being Powerless.