EasyAcc 20000mAh Power Bank, External Battery Charger for Android Smartphones and Tablets (Black + Orange) Review

Image copyright belongs to EasyAcc.com

 

The EasyAcc 20000mAh Power Bank was kindly provided to me by the EasyAccU. Store free of charge in exchange for a fair and unbiased review on Amazon. No additional compensation was given in exchange for posting this article on my blog.

The EasyAcc 20000mAh Power Bank is available in the UK from EasyAccU. Store Fulfilled by Amazon.co.uk at a cost of £22.99 with free P&P. In the US the EasyAcc 20000mAh Power Bank is available from EasyAccA. Store Fulfilled by Amazon.com at a cost of $30.99 +P&P or with free P&P for Prime members.  (Prices correct at time of posting).

 

To enlarge an image and view its description, please click on the image.

 

CONTENTS.

The EasyAcc Monster 20,000mAh power bank comes supplied in a simple plain brown card box with product information printed in white on front and some product features on the rear. Inside the power bank is accompanied by an instruction leaflet and two USB A to Micro B charging cables about 20cm each in length.

 

MEASUREMENTS.

The following measurements are taken with a digital calliper and are accurate to within 0.1%.

Length = 16.85cm
Width = 8.1cm
Depth = 2.25cm
Weight = 451g

 

DESIGN & IN USE.

Giving the power bank the once over we find…

The front of the device sports an “EasyAcc” branding logo indented in the black plastic on the top left, and in the bottom right, there are 4 pinhole LED’s which are used to display the current charge held by the power bank…

 

On the rear of the power bank there is product information printed along the bottom edge.

“Model PB2000MS Capacity: 20000mAh/74Wh” as well as port input and output specifications as well as safety certification and compliance labels.

On the left side towards the top edge there are two USB Micro B inputs which are used for charging the power bank. The second input is a most welcomed inclusion given the capacity of the power bank as charging it with just one input takes the best part of a day.

 

On the top edge of the power bank are located four USB A outputs, each have a maximum output of 2.4A although total output is limited to 4.8A across all ports. Alongside the USB outputs there is also a 1.2mm diameter torch.

 

On the left edge towards the bottom edge is the power button, this measures 1.2cm long and 4mm wide and has no edge or back light. When connecting your mobile devices to the EasyAcc 20,000mah power bank it will automatically begin to charge them, should you, however change the device being charged without removing the cable from the power bank before doing so you will need to tap the power button to begin charging the new device when it is connected.

 

When no devices are charging you can also tap the power button to show the power bank capacity via the four LED’s on the front and to operate the torch simply tap the power button twice in quick succession to turn it on and twice more to turn it off.

The torch to be fair is less of a torch and more comparable to a Keyring LED fob light offering a 45 degree angle of dispersion and a range of about 8m. If not for the size and weight of the device I would have said it was more suitable for reading a book at night than finding your way in the dark, that said it has proved useful more than once on long weekends away.

 

Overall the build quality is very good with everything fitting together well, the supplied cables in the ports are a little wobbly, but they are secure and the supplied cables themselves while basic, a little stiff and full of kinks are fully serviceable. The materials used in the construction of the power bank appear to be of good quality with the main body of the power bank being made from a black finely textured, durable (scratch resistant) ABS plastic.

 

It should be noted that the power bank is big and heavy. This is most defiantly not an everyday emergency power supply. It is perhaps far more suited to being stored within a laptop bag or as a weekend away at a festival or camping power supply.

 

TESTING RESULTS.

The following testing was conducted with a DROK® Mini USB Current Voltage Charger Detector.

I would like to note that this section is rather long and somewhat convoluted. I have included it for those that are interested as well as to show methodology and because it is evidence of my claims regarding efficiency. For those that are simply interested in the conclusion, please feel free just to skip to the end of this chapter.

The power bank was first obviously left to charge overnight till 100% full.

 

NEXUS 7 TEST
The first device up for charging was a Nexus 7 which has a capacity of 4325mAh and was dead when testing began. Initial readings from the multimeter were 0.44A, 2.266w.

After 11 minutes the tablet was switched on and showed a charge of 2%. From this point on the tablet was left on with Wi-Fi switched on and the screen off. Readings from the multimeter at this point were 0.44A, 2.261w.

After 36 minutes the tablet was charged 6%. (0.44A, 2.261w)
After 1h 3m the tablet was charged 11%. (0.44A, 2.261w)
After 1h 45m the tablet was charged 19%. (0.44A, 2.261w)
After 2h 15m minutes the tablet was charged 24%. (0.44A, 2.261w)
After 3h 11m minutes the tablet was charged 36%. (0.44A, 2.261w)
After 3h 59m minutes the tablet was charged 43%. (0.45A, 2.261w)
After 4h 49m minutes the tablet was charged 53%. (0.45A, 2.317w)

There was a break in testing here, during which time the tablet was left on and the indicated charge dropped by 1%. The charge of the battery was now 52% and a different port was used on the power bank to see if there was any difference in port output.

After 27 minutes the tablet was charged 5%, total capacity 57%. (0.45A, 2.317w)
After 1 hour the tablet was charged 12%, total capacity 64%. (0.44A, 2.317w)
After 1h 38m the tablet was charged 19%, total capacity 71%. (0.45A, 2.317w)
After 3h 13m the tablet was charged 25%, total capacity 77%. (0.45A, 2.313w). This reading seems to be a rather strange anomaly, for a period of about an hour and a half the power bank charged the tablet significantly slower than at any other point during testing.

At some point between 6h 27m and 8h 02m of charging the nexus 7, one of the lights on the power bank went out indicating a consumption of 25% of the power banks internal battery.

After 4h and 3m the tablet was charged 36%, total capacity 88%. (0.45A, 2.313w)
After 4h and 55m the tablet was charged 46%, total capacity 98%. (0.45A, 2.317w)
After 5h 11m the tablet was charged 48%, total capacity 100%. (0.45A, 2.317w)

The Power bank took exactly 10 hours to charge the nexus 7 101%, while the tablet was switched on with Wi-Fi on and the screen off. The total output of the power bank while charging the Nexus 7 was 4566.6mAh +  100mAh consumed by the multimeter. Total estimated power bank output at this point = 4666.6mAh.

 

MOTOROLA MOTO G 2ND GEN TEST.
This phone has a 2070mAh battery and at the start of the test the phone had a charge of 66%. Initial readings from the multimeter were 1.04A, 5.007w. The phone was switched on while charging with Wi-Fi on and everything else including the screen off.

After 1h 54m the phone was charged 28%, total capacity 94%.
After 2h 12m the phone was charged 34% and was now fully charged.

The power bank took exactly 2 hours and 12 minutes to charge the Moto G 44%, while the phone was switched on with Wi-Fi on and the screen off. The total output of the power bank while charging the Moto G was 921.8mAh +  22mAh consumed by the multimeter. Total estimated power bank output at this point is 5610.4mAh. (Apologies for the lack of multimeter readings with this test).

 

SAMSUNG GALAXY NOTE 10.1″ 2012 TEST.
The note has a battery capacity of 7000mAh and at the start of the test the tablet had a charge of 68%. Initial readings from the multimeter were 1.67A, 8.314w. The tablet was switched on while charging with Wi-Fi on and everything else including the screen off.

After 32 minutes the tablet was charged 11%, total capacity 79%. (1.38A, 7.010w)
After 1h 9m the tablet was charged 23%, total capacity 91%. (0.75A, 3.840w)
After 1h 38m the tablet was charged 28%, total capacity 96%. (0.59A, 2.653w)
The test was stopped at this point.

The power bank took exactly 1 hour and 38 minutes to charge the Note 10.1” 28%, while the tablet was switched on with Wi-Fi on and the screen off. The total output of the power bank while charging the Note 10.1” was 1965.37mAh +  14mAh consumed by the multimeter. Total estimated power bank output at this point = 7589.77 mAh.

 

SAMSUNG S2 TEST.
This phone has a 1800mAh battery and at the start of the test the battery was dead, initial readings were 0.66A and 3.392w.

After 15 minutes the phone was charged 7%. (0.66A, 3.385w). At this point the phone was switched on with Wi-Fi on and everything else off including the screen.
After 41 minutes the phone was charged 24%. (0.65A, 3.384w)
After 53 minutes the phone was charged 34%%. (0.65A, 3.334w)
After 1h 35m the phone was charged 51%%. 0.65A, 3.334w). At this point another of the lights on the power bank had gone out.
After 2h 19m the phone was charged 90%. (0.33A, 1.699w)
After 3h 4m the phone was charged 100%. (0.19A, 1.496w)

According to the multimeter the power bank discharged 1807.6mAh while charging the phone. During use the multimeter also consumed and additional 30mAh. The total output of the power bank at this point was 9397.37mAh.

 

SAMSUNG GALAXY NOTE 10.1″ 2012 TEST TWO.
The Note has a battery capacity of 7000mAh and at the start of the test the tablet had a charge of 87%. Initial readings from the multimeter were 1.45A, 7.466w. The tablet was switched on while charging with Wi-Fi on and everything else including the screen off.

After 18 minutes the tablet was charged 5%, total capacity 92%. (1.21A, 3.231w)
After 1h 12m the tablet was charged 12%, total capacity 99%. (0.29A, 1.493w)
The test was stopped at this point

The power bank took exactly 1 hour and 12 minutes to charge the Note 10.1” 12%, while the tablet was switched on with Wi-Fi on and the screen off. The total output of the power bank while charging the Note 10.1” was 850.88mAh +  11mAh consumed by the multimeter. Total estimated power bank output at this point was 10259.25mAh.

 

SAMSUNG GALAXY NOTE 10.1″ 2012 TEST THREE.
The note has a battery capacity of 7000mAh and at the start of the test the tablet had a charge of 76%. Initial readings from the multimeter were 1.37A, 7.024w. The tablet was switched on while charging with Wi-Fi on and everything else including the screen off.

After 1h 9m the tablet was charged 18%, total capacity 92%. (0.60A, 2.872w)
After 2h the tablet was charged 24%, total capacity 100%. (0.20A, 1.442w)

The power bank took exactly 2 hours to charge the Note 10.1” 24%, while the tablet was switched on with Wi-Fi on and the screen off. The total output of the power bank while charging the Note 10.1” was 1699.44mAh +  20mAh consumed by the multimeter. Total estimated power bank output at this point was 11978.69mAh.

 

SAMSUNG GALAXY NOTE 10.1″ 2012 TEST FOUR.
The note has a battery capacity of 7000mAh and at the start of the test the tablet had a charge of 94%. Initial readings from the multimeter were 1.22A, 2.634w. The tablet was switched on while charging with Wi-Fi on and everything else including the screen off.

After 40 minutes the tablet was charged 6%, total capacity 100%.

The power bank took exactly 40 minutes to charge the Note 10.1” 6%, while the tablet was switched on with Wi-Fi on and the screen off. The total output of the power bank while charging the Note 10.1” was 423.24mAh +  6mAh consumed by the multimeter. Total estimated power bank output at this point was 12407.93mAh.

 

MOTOROLA MOTO G 2ND GEN TEST TWO.
This phone has a 2070mAh battery and at the start of the test the phone had a charge of 70%. Initial readings from the multimeter were 1.10A, 5.610w. The phone was switched on while charging with wifi on and everything else including the screen off.

After 29 minutes the phone was charged 20%, total capacity 90%. (0.45A, 2.317w). Another anomaly, that seemed very quick to charge 20%.
After 57 minutes the phone was charged 30% and was now fully charged. (0.17A, 0.877w)

The power bank took exactly 57 minutes to charge the Moto G 30%, while the phone was switched on with Wi-Fi on and the screen off. The total output of the power bank while charging the Moto G was 626.16mAh +  10mAh consumed by the multimeter. Total estimated power bank output at this point was 13044.09mAh.

 

SAMSUNG GALAXY NOTE 10.1″ 2012 TEST FIVE.
The Note has a battery capacity of 7000mAh and at the start of the test the tablet had a charge of 75%. Initial readings from the multimeter were 1.45A, 7.360w. The tablet was switched on while charging with Wi-Fi on and everything else including the screen off.

After 34 minutes the tablet was charged 11%, total capacity 86%. (0.93A, 4.752w)
After 54 minutes the tablet was charged 16%, total capacity 91%. (1.24A, 3.437w)
After 1h 53m the tablet was charged 25%, total capacity 100%. (0.30A, 1.600w)

The power bank took exactly 1 hour 53 minutes to charge the Note 10.1” 25%, while the tablet was switched on with Wi-Fi on and the screen off. The total output of the power bank while charging the Note 10.1” was 1769.44mAh +  20mAh consumed by the multimeter. Total estimated power bank output at this point was 14833.53mAh.

 

SAMSUNG GALAXY NOTE 10.1″ 2012 TEST SIX.
The Note has a battery capacity of 7000mAh and at the start of the test the tablet had a charge of 53%. Initial readings from the multimeter were 1.45A, 7.596w. The tablet was switched on while charging with Wi-Fi on and everything else including the screen off.

After 11 minutes the tablet was charged 6%, total capacity 59%. (1.45A, 7.596w)
After 22 minutes the tablet was charged 12%, total capacity 65%. (1.39A, 6.858w)
After 24 minutes the tablet was charged 13%, total capacity 66% and the power bank was dead.

The power bank took exactly 24 minutes to charge the Note 10.1” 13%, while the tablet was switched on with Wi-Fi on and the screen off. The total output of the power bank while charging the Note 10.1” was 914.86mAh +  5mAh consumed by the multimeter. Total estimated power bank output at this point was 15753.39mAh.

 

RESULTS
The total output of the EasyAcc power bank from fully charged to fully dead during one somewhat slightly non scientific test that was not conducted in a controlled environment with results that should not be taken too seriously and are as such just a guide gave an output reading of 15753.39mAh.

During testing the torch was also used for a couple of very brief periods of time and several times the capacity was checked. As such I am arbitrarily going to add a 50mAh drain on the battery which is perhaps a little over generous.

Total output from full to dead = 15803.39mAh.

With the power bank having a capacity of 20,000mAh this indicates an efficiency of 79.01%. The average efficiency of these devices is about 80% and more premium devices offing an efficiency of around 90% with few managing more than 93%. Considering the price the efficiency rating of the EasyAcc power bank isn’t bad at all, although in reality, there is probably a +/- 2% to 3% margin of error in my results.

A couple of additional points
1. After nearly 5 hours of constant use the power bank never even became slightly warm to the touch.
2. The power bank is exceptionally slow to charge. Connected to a PC USB 2.0 port readings are 0.80A, 3.880w taking 4 seconds to charge 1mAh. While there are thankfully two inputs for charging personal testing would indicate a 22h charge time on a single port or 10.5 hours using both inputs.

 

ADDITIONAL.

This review was originally written on Amazon by myself on the 15th Nov 2015 back before I bought a DSLR (hence the sub par images). In this time the EasyAcc 20,000mAh power bank has been used at least one weekend a month and as of the 7th March 2017 this device is still fully functional and regular use.

 

Thank you for taking the time to read this review, I hope it has been helpful to you. If you have any questions or comments regarding this review, please post a comment below and I will do my best to answer them.

EasyAcc is a registered trademark of EasyAcc.com

Copyright © 2014-2017 EunoiaReviews. All rights reserved. Reproduction of any part of this site including images and video files is strictly forbidden without prior written consent.

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