Intocircuit%C2%AE Multi Voltage Smartphone Thunderbolt connectors
I tested Intocircuit� Power Castle Series PC26000 26000mAh External Battery Pack with IBM T60p laptop, Nexus 7 Tablet (JellyBean 4.2.2), Samsung Galaxy 7.7 Tablet (ICS 4.0.4), and Samsung Galaxy Nexus cell phone (JellyBean 4.2.2).
I own several external battery packs. To test their performance I run the same set on tests on each of them so I can compare them to each other and to provide unbiased results as the numbers speak for the performance of each unit.
To test Intocircuit 26000mAh power pack I ran my standard 10 minute test for each of my 3 mobile devices. I also ran a set of tests to see how my laptop can operate on this external battery. My methodology for mobile devices 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. Each line in the table below represents a separate 10 minute test.
In addition I ran a test to see how battery pack worked with my laptop. I charged both the laptop and the battery pack to 100% from AC source. Then I switched the laptop to charge from Intocircuit� Power Castle Battery Pack. The laptop remained at 100% running on external battery pack for 5 hours and 11 minutes. The load on the laptop was pretty light, it just ran a program which printed time into a file after a 30 second pause. The second laptop test was to start with the laptop discharged to 5% and the external battery back fully charged. I wanted to see how high can the battery pack charge the laptop battery before it fully discharged.
I am attaching a collage of 4 photos. You can locate this photo by following 'customer photos' link under the main photo.
Photo #1 shows the top of the unit which has an LED light which indicate the charge level. Alert: the documentation has a bug referring to the color of led lights as red, it says when the brick is full you will see "steady red led light". The led lights are always green, either blinking or steady.
Photo #2 shows the power brick on the digital scale, its weight is 1 pound 8.7 oz. The size of the power pack is 7.25" x 4.75" x 0.75".
This power pack has one USB outlet, one DC output socket (as charging source for the laptop), one DC input socket (to charge the brick). None of the ports are labelled.
This external battery comes with 10 adapters for laptop power port and 10 adapters for mobile devices.
Photo #3 shows my laptop power plug (in grey) and Intocircuit adapter that fits my laptop (in the background you can see the dizzying number of adapters that come with this battery pack). The external power battery can run at at 12V, 16V, and 19V. My laptop is rated as 20V, and I was successful in using the 19V setting for the laptop, and 12V setting for my mobile devices.
Photo #4, shows my laptop and Intocircuit� power pack during one of the tests.
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.
The key findings:
(1) Both Nexus phone and Nexus 7 tablet (both running Jelly Bean 4.21) charged at AC rate on both ports. The charging was on par with the best chargers.
(2) Samsung Galaxy 7.7 worked at AC level with a charging cable, and did not work (showed as discharging) with a data cable.
(3) The battery pack worked well with my laptop
The table below summarizes my findings:
Nexus 7 Tablet
AC rate.....2% charge increase
Samsung Galaxy Nexus Phone
AC rate.....5% charge increase
Samsung Galaxy Tablet 7.7
AC rate.........3% charge increase
Test 1....Laptop charged from 5% to 69% in 1 hour (external battery pack went from 100% full to empty)
Test 2....The laptop remained at 100% running on external battery pack for 5 hours and 11 minutes.
I received this battery pack from the manufacture for an honest review be it positive or negative. Running the same set of test on all my external batteries allows me to provide an unbiased review. By comparing the results of the tests for this battery to the other external batteries I tested, this power pack earned a 5 star rating.
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