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Monday, September 14, 2015

Product review: Kinps 20000mAh Portable Power Bank











' size: 8.25" x 5.5" x 1.5"
' weight: 1 pound
' number of ports: 3 universal ports
' flashlight: no
' cables: 1 charging cable

This external battery performed very well charging both my Android phone and Apple iPadMini tablet. Each port of this battery is universal, i.e. each of my devices does equally well on each port.

To see how well different chargers and external batteries charge my mobile devices I use a Nexus phone and an iPadMini to test each of them. The current drawn from the battery depends on each device using the battery. The port rated with maximum capacity of 2A does not always deliver 2A, what is actually delivered is controlled by the device based on many factors such running apps, level of charge, and so forth. I always use the same two devices and I do my tests with the devices charged to the same level, running the same applications and using the same cables to keep everything the same. This allows me to do a relative comparison of each battery and identify the ones that do not perform well. Note that these tests are not testing for the maximum current each device can draw on each port as neither of my devices can max out the port.

I check if the cable that came with the battery is a charging cable (i.e. capable of charging at full AC rate or if charges at slower USB rate). This is easy to tell by using a current monitor and I happy to report that this package includes a charging cable that works at AC rate.

Samsung Nexus phone:
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port 1: 1.02A / 5.10V (excellent comparing the performance of the same device with other chargers)
port 2: 1.02A / 5.09V (excellent comparing the performance of the same device with other chargers)
port 3: 1.02A / 5.10V (excellent comparing the performance of the same device with other chargers)
(for comparison the best charging monitor result for this phone is 1.00A/5V)

As noted above these tests are not designed to test the maximum capacity of the port, so 2A port not showing 2A is not an indication of a problem

iPad Mini tablet:
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port 1: 1.23A / 5.08V (good comparing the performance of the same device with other chargers)
port 2: 1.15A / 5.09V (good comparing the performance of the same device with other chargers)
port 3: 1.35A / 5.10V (good comparing the performance of the same device with other chargers)
(for comparison the best charging monitor result for this tablet is 1.70A/5V)

The battery has a nice capacity and fast charging rate for oth Android and Apple devices. I use it to power a 4" speaker which is used several hours a day and it runs for many days without needing a recharge.

You can find it on Amazon by following this link.



Ali Julia review ★★★★★


2 comments:

  1. A dangerous power bank. I purchased this exact Kinps charger in August 2015. With minimal use and stored dry in an ambient temperature in a drawer. This week (march 2017) I removed it from itsdraw string case to find it had expanded in one corner to four times the size. I have now discovered it is leathel and has the capability of causing a dramatic and deadly explosion if dropped. I have been advised to bury it carefully. I emailed Kinps seeking an urgent response. They never even bothered to reply. I'm not surprised. Kinps do not want any comeback due to faulty manufacturing. What an irresponsible company!

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  2. Thank you for sharing. It is disappointing that they did not respond. My experience with this battery has been positive however. It is the battery I use most as I found it to be reliable and hold the charge well. It has been in daily use for over 2 years.
    I appreciate your comment - this is a good warning to always keep an eye on lithium batteries.

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