Hey gadgeteers, it's been almost a month since my last review. So, here you have another review for Vinsic 20000 mAh Powerbank.
This review represents my personal and unbiased view on Vinsic
20000 mAh Powerbank. In this test I will evaluate everything I think is
important for consumer – consumer experience.
----------
What's in the box:
-
20000 mAh powerbank
-
Micro USB charging cable
-
Thank you card.
-----------
First impressions: powerbank arrived in nice and secure packaging.
Right out of the box, the powerbank feels high quality. It's the best looking
powerbank I tested to date. It's covered in aluminum alloy which gives
powerbank cold, high - end feel. The dimensions of the unit are: 17.4 cm x 12.2
cm x 1.3 cm (L x W x H). Yes it's very slim. Because of aluminum body, the unit
is also fingerprint – resistant.
On the side there are 2 USB output
port (1x2.1A, 1x 1A), the USB input port, which is 2A and power display. »Power
button« here is different that on any other powerbank I tested. Actually there
is no physical button, but touch enabled surface which tells the amount of
battery capacity left in powerbank (you have to slide over this touch enabled
area). What I like is, that power display shows you battery level in
percentages. It's the first time I've seen that feature in the powerbank.
Powerbank is FC, CE and ROHS
certified.
Test: powerbank is very easy to use. When you plug device in,
powerbank starts charging it automatically. If you want to check battery level,
just slide over touch enabled area. LED Indicator will go automatically off in
few seconds.
Battery
efficiency: with first fully charged powerbank I was able to charge: Note 4
from 27 – 100%, Nexus 10 from 0 – 100% and ipad mini retina from 38 – 70 %. The
battery sizes of those devices are 3220 mAh, 9000 mAh and 6471 mAh
respectively.
2350 mAh + 9000
mAh + 2070 mAh = 13420 mAh.
13420/20000 =
0.67
That means that
the battery efficiency was 67%. I found that efficiency ratio solid. It takes
few battery cycles, before powerbank reach its full potencial of battery
efficiency.
Charging time: because of its size, powerbank was
fully charged from 0 – 100% in 12 hours. Charging input speed is around 1650
mAh per hour.
Output charging speed: Note 4 was charged from 27 – 100% in
1 hour and 45 minutes. Charging speed was around 1350 mAh per hour.
Simultaneous charging: I charged Note 4 and iPad mini
retina at once. There was no decrease in charging speed.
Compatibility: it charged all devices I plugged in. Beside devices I mentioned above, I
also charged Nokia Lumia 520, iPhone 5s, Bluetooth speaker and Sony Bluetooth
headphones.
Overheating issues: during my tests, I didn’t notice
any overheating issues.
----------
Conclusion: This is one of the best big
powerbanks I tested. The design is great and the performance is solid. This is
great choice to anyone who is looking for high capacity powerbank, you won’t be
disappointed.
Recommended!
