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Extended Batteries for iPhone

If you are one of those heavy users of iPhone and do not normally have a chance to give it a boost in the middle of the day, you may need an “extended battery”. Nowadays you have quite a number of them to choose from.  The big brands include:

Case-mate

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You can buy this at one of those famous electrical appliances stores like Broadway, Fortress etc. It carries a price tag of HK$ 498 (at Broadway). As you can see, it is in the form of a case for the iPhone.  It’s acceptably light in weight.  However, the clip at the back is a bit over-doing or redundant. I would not use it to clip my iPhone on my belt, leaving the surface unprotected. The clip makes the whole thing look bulky and adds some unnecessary weight.

Energizer

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I saw this in Shamshuipo Golden Arcade. It’s also in the form of a case but with no clip at the back. It costs almost HK$800, much more expensive than the case-mate.

Other Choices:

I have found at least 2 other batteries with similar design (slip-in case) at the lowest basement of Golden Arcade,  costing about HK$300 and and HK$400 respectively. I think they are different in the amount of mAh.

Here is another one which only costs HK$95 and I have bought it for a trial.

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It’s not as neatly designed as the other ones but the big advantage is it’s cheap. I think I would only use it to give my iPhone a boost as needed and will detach it from my iPhone when the power level has gone up sufficiently and so it should serve my need quite well. It’s also much lighter and smaller than the other batteries described, so it is easier to carry for contingency purpose. It takes less than 2 hours to fully charge this battery, and a fully charged battery can in turn charge the iPhone for 2  full times.  It takes an hour to raise approx. 40% of the power level of the iPhone. The charging process is surprising cool (didn’t feel any rise in temperature), both when the battery is being charged and when the battery is charging the iPhone. So I suppose it should be quite safe in that respect.

Hope you’ll find the information useful.

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