It’s a simple, cheap
Portable Charger device that does what it says on the tin. Two output ports are provided – one for lower 1 amp devices (older Android phones), and another for 2.1 amp devices (typically Apple devices and tablets) – and at full capacity it’ll provide enough power to fully charge an iPhone at least 5 times over. There’s over-voltage, over-current , and short-circuit protection built-in – as you’d expect from any modern charger found on Amazon. The package features a slew of safety approval symbols for European and American testing, so you can alleviate any safety fears you have on that front.
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Charging is initiated by pressing the single button.
A simple 4 count of blue LEDs provides immediate feedback on how much power is left, or flashes to indicate charging. They’re not visible in bright sunlight though, so do check the smartphone or tablet itself to see if it indicates charging status.
Testing showed it took approximately 1 hour 45 minutes to fully charge an iPhone 5 in the 2.1 amp socket. My Nexus 7 recognised the charger as “AC” source (also on the 2.1 amp socket), and went from an initial 17% charge to around 90% in 2 hours, at which point the Lumsing battery depleted, and shut off automatically – not surprising, considering the Nexus has a whopping 4,325 mAh internal battery and the battery pack had already been used for a few iPhone charges at this point. Throughout charging, the battery remained slightly warm to the touch but not uncomfortably so, and testing would appear to show the total capacity is around 10,000 mAh.
Charge retention was good – after leaving it for a week without use, it doesn’t appear to have degraded at all, though obviously I haven’t had enough time to test this conclusively. Most batteries will almost certainly lose their charge if left for too long – and some will even refuse to charge again once that happens. I don’t imagine this device is any different, so as long as it’s in regular use or you remember to top it up, it should always be there for a rainy day.
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Should you buy the Lumsing Powerbank?
The Lumsing 10,400 mAh portable
External Batteries pack is not a fancy device: it promises only one function and two charging ports, and it delivers upon that promise – at an affordable price.
Ultimately though, there’s an abundance of similar devices on the market at similar price points – there’s nothing outstanding about the Lumsing battery pack in particularly, so you may find yourself making a choice on looks alone.
