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Mediocre Backpack with Internal Wiring and "Creative Math" Battery Pack
on February 15, 2012
I thought I would provide an update to my original review since I was forced to keep using this backpack over the past 20 months due to living outside the US. The plastic coating on the bottom of the backpack has started to come apart. When that happened, I noticed that there is no padding at all on the bottom of the main compartment, just the thin nylon fabric. This fact, coupled with the battery rating issue I highlighted have caused me to lower my rating. I would avoid this backpack.
This backpack is a mediocre design. Its one big selling point is that it includes internal wiring for your mobile devices.
The backpack's description highlights that the internal battery is rated at 6000mah. This is disputed by the fact that the actual rating of the included battery is 22.2Wh at a voltage of 7.4V, which equates to 3000mah. This seems to be the norm from the manufacturer, as they rate their biggest battery available for these backpack systems at 9000mah, yet that battery shows a rating of 33.3Wh at a voltage of 7.4V, or 4500mah. I don't understand how the company can make these mah claims when their batteries clearly show a different listed value.
Which brings me to the point of my review. I bought this backpack to power my Clear 4G modem during the day. Previously, I used an external battery pack rated at 6600mah that would allow my Clear 4G modem to last me all day and only necessitated overnight charging before the next full day of use. Contrast that with the supposed 9000mah rated optional battery I bought, which can't even make it through my complete work day. This fact is what caused me to look at the battery and notice the actual electrical rating.
Pros: The zippers are very nice and smooth to operate. The internal wiring is a nice clean way of being able to charge mobile devices while on the go.
Neutral: Nothing too special about the backpack itself.
Cons: The included battery does not seem to be actually rated at what is described, at least going off of the battery's own rating information. The battery pack and its wiring harness take up considerable space in the front pocket, especially when using the optional 9000mah battery pack. BTW, the supposed 9000mah battery pack is no longer available for sale from the backpack's manufacturer at the time of this writing, as I have tried to get another after realizing I needed a second one in order to have it ready for when the first one dies during a day of use. And worst of all, the battery pack can only be charged using the included 12V, 1.2A charger. Good luck finding a suitable replacement if you are ever on a long trip and forget to bring the charger.