I tested EC Tech 7800 mAh Power Pack with with Nexus 7 Tab (running ICS 4.3), Galaxy Nexus Phone (running ICS 4.2) and Samsung Galaxy 7.7 Tablet (running ICS 4.0.4). Overall, the tests show good results.
I received this power bank from the manufacturer for an honest review be it positive or negative. Top reviewers are often asked to review new battery packs and one of the benefits of being asked to test different power banks is that it gives me an opportunity to compare them to each other using the same charging test, so I can compare them using "apples to apples" comparison. This set of tests allows me to provide unbiased results as the numbers speak for the performance of each unit.
My methodology is to charge each mobile device on each port of the unit for 10 minutes and measuring how much each unit was charge in that 10 minute period. In addition I tested charging two mobile devices at the same time. Each line in the table below represents a separate 10 minute test.
I use Battery App by Elvison to determine how each device recognized the charging source. 'AC' status means the charging is at full charging rate. 'USB' status indicates charging at a lower charging rate. 'Discharging' status means that the charging rate is below the power that the device is consuming so it slows down the discharge rate but does not re-charge.
➨ General features:
======================
EC Tech 7800 mAh external battery weighs 6.6 oz. Its size is 2.75" x 3.75" x 0.875".
The pack has 2 USB output ports. The package includes 4 tips: PSP, Mini USB, Micro USB, Apple. It also has two adapter cables. Galaxy tab connector and lightening cable for iPad Mini are not included. The battery pack has a small LED flashlight built into it.
➨ Test Results:
======================
✔ Samsung Galaxy 7.7 tablet (using my own Galaxy tab connector cable)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Port 1: AC ~~~~~~ 2% change in charge in 10 minutes
Port 2: AC ~~~~~~ 4% change in charge in 10 minutes
✔ Nexus 7 Tab
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Port 1: AC ~~~~~~ 3% change in charge in 10 minutes
Port 2: AC ~~~~~~ 4% change in charge in 10 minutes
✔ Galaxy Nexus Phone
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Port 1: AC ~~~~~~ 3% change in charge in 10 minutes
Port 2: AC ~~~~~~ 4% change in charge in 10 minutes
✔ Galaxy Nexus Phone and Nexus 7 Tab together
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Port 1: AC ~~~~~~ 3% change in charge in 10 minutes (Galaxy Nexus Phone)
Port 2: AC ~~~~~~ 1% change in charge in 10 minutes (Nexus 7 Tab)
➨ Key finding:
======================
✔ This external battery worked equally well for the phone and the tablets. It is not the fastest external battery I have tested, but its performance is very respectable.
You can find it on Amazon by following this link.
Ali Julia review ★★★★☆
No comments:
Post a Comment