Just Mobile Gum Pro reviewed
Wednesday, August 4, 2010 at 3:10PM
Gum Pro in a fieldSeveral weeks ago we sent one of our regular customers off to Glastonbury armed with one of these new battery chargers for a proper 'field' test.....here's his report:
Where would you go to fully test a charger’s capabilities? Where, in this plugged-in world would you be able to take it and give it a full run-out, let it show its talents?
How about a field in the middle of Somerset for five long days?
I packed the Just Mobile PP-08 Gum Pro 4400 mAh Power along with my wellies, sun cream and wet wipes and took it to the Glastonbury Festival 2010. Among the hippies, happy-clappers and hardcore ravers, it would get a proper test, a true examination of its power.
I know what you’re thinking. Why do you need a charger at a free-thinking, anti-capitalist love-in? Well, things have moved on since the hemp-filled days of the 70s. All four of us Glastonbury-going pals have got iPhones. We need to keep in touch with each other. There’s 250,000 people in that grassy valley and, if you aren’t careful, you can soon lose your mates.
Three of us had an iPhone 3GS. One, hanging out for an upgrade to an iPhone 4, is still carrying round his iPhone 3G. We all took a Just Mobile PP-08 Gum Pro 4400 mAh Power and prepared to be powered through the festival with the help of the little black box.
That’s the first thing to notice. It’s a small, unassuming black box. It has three lights on it and very little else. To charge it, I plugged it in to my laptop for a good few hours. It connects via the USB port to a mini-USB.
Once charged, it holds a lot of power and it would be essential for me and my pals to make sure we knew where the best burgers were, who had found the hottest new band and which of us had taken the best picture.
Wednesday. A fully charged phone was used sparingly. By the end of the day, the battery was down to about 40% power.
Thursday: By the time the evening came, and refreshments had been taken, too many phone calls, Twittering and larking about had drained the phone. A full charge was needed. Plugging in the box, the effects are instant. Within about an hour, the phone is back on its feet with full charge.
Friday: Slightly over-confident, there was a large amount of phone use. So, in the evening, another full charge was done. The lights on the box tell you how much juice is left. At this rate, we’d have tons to spare.
Saturday: A quieter day, in terms of phone use, but again a quick charge at the end of the night left the iPhone fully charged as if it had been plugged in overnight.
Sunday: Still going. And there’s still enough juice in the box to give another full charge. All of us Glastonbury tent-dwellers are feeling less energetic than the little black box.
And Monday morning: A little bit of power is left in the box, so it’s poured into the iPhone and the job is done.
Overall, the charger is a fantastic, effective and really useful piece of kit. It kept us all connected throughout the five days. Amazing to think such juice is in such a small device.
Highly recommended. Excellent value and something I am very glad I bought.
Thanks to our intrepid reviewer - you know who you are :)
And to those of you planning a 'field trip', you can buy your Gum Pro here

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