Most people like to carry one portable battery pack for there are always drain for their smartphones’ battery. But there are so many options in the market and it is hard for them to choose a trustworthy one to purchase. Thankfully, Parkman S2 has got a good reputation from many tests and is on sale for $14.99 which makes the Parkman significantly cheaper than other power banks with similar capacity ratings, especially since it charges comparably fast.
Brilliant Design and Light Weight
Used with ABS and PC material, this cool portable charger works stable and the premium microchips ensure reliability and safety, besides, it was used the best battery cells and best management IC in the world and the Parkman team claims that it is doubles the market standard which 500 charge or discharge cycles of the battery products with this 299g pack. It's compact and you can easily take it anywhere because of its handy shape.
High Conversion Rate
To digress a bit, know that the 10,000mAh is the capacity at 3.75V; hence, the power bank has a total energy of 37,500mWh (milliwatt-hour) . But then, the output is done over 5.1V. At this voltage, the capacity is actually about 7353 mAh. And after factoring in the 90 to 93% conversion efficiency that Parkman claims (this refers more to the internal circuit board), we get a range (6617 to 6838 mAh) that’s close to this 6840 mAh number. Note too that this is possible under a 1A current. Both the total output capacity and circuit conversion efficiency will be lower during 2.1A fast charging, due to more energy lost.
The above is why Parkman says the power bank is able to charge the iPhone 6 or iPhone 5s with 3 times and charge iPhone 6 plus with 2 times.
Most power banks will lose between 30- 35 percent of their battery capacity through heat generated and voltage conversion, but he hardware inside of Parkman S2 has been optimised for increased efficiency and durability, which Parkman team claims is up to 93 percent.
Quick Charge
Since it has a wide compatibility and it can work with many phones like Apple, Samsung, Google, HTC and so on, The power bank detects your device intelligently and quick charges your device at highest possible speed.
Considerate Protection
The Parkman S2 unit has dual protection circuitry against short circuits and overcharging etc. plus sports CE, RoHs and FCC compliance markings which keep your devices safe from over-charging, over-voltage, over-current, and short circuit.
On top of this, Parkman S2 convenient pack might be just right for you. It now available on Amazon at $14.99, you can feel free to choose the four different colors.
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