It weighs slightly more than the previous battery packs, but it also offers significantly more power.
With 5 watts of power bank V7 loads faster than many a charging cable and so the smart phone or tablet must also not long in his well-filled battery.
Very good in this case is already on the cable microUSB instead Mini-USB. Meanwhile, already standard, but advanced compared to Bluetooth speaker of the brand, as it still inexplicable mini USB uses.
Now it has usually just one smartphone, but it would be even better, in my view, if it would provide two ports for charging two devices. You could for example invite his tablet and a smartphone at the same time instead of sequentially.
Bottom line, I like the External Battery very good and it would probably buy again for the tablet.