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emergency charger iphone 4

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emergency charger iphone 4 Customers Reviews

  • Very nice unit

    posted by landau351

    Fits my TrustFire protected batteries. Works as expected. Charges the phone via the standard UDB. I was fortunate to have the Nokia style min-USB cables so can easily recharge the unit at home or work.
    For this price I get nearly 10,000ma battery pack.
    I would recommend this unit but it REALLY need instructions.
  • Excellent product for that price

    posted by theseven

    - Cheap- 2A output- PCB contains battery protection circuitry (deep discharge, overcharge, short circuit)- Bypass diode from input to output- Step-Up converter efficiency of 70-80%- Trickle charges deep discharged batteries- Doesn't start charging if battery voltage is above ~4.15V- Fuel gauge isn't all the way off (but tends to be a bit too optimistic)
    Some data points:- PCB looks like the 2A output version, bottom picture here: http://i1138.photobucket.com/albums/n525/yulunyan/55.jpg- Battery charge completion: 4.20V- Powered off battery discharge current: 0.5mA- Powered on (idle) battery discharge current: 4.6mA (including LED)- USB output voltage (idle): 5.21V- USB output voltage (3.55V battery, 1.63A load): 4.57V (efficiency at this point: ~72%)- USB output voltage (4.1V battery, 1.75A load): 5.16V- USB output voltage (4.1V battery, 1.95A load): 4.61V
    Awesome product for that price, apparently well-engineered electronics.I'm really curious what that jumper on the PCB is good for.
  • Very useful!

    posted by misterprimo

    - The built is great- Comes with a useful led for emergency illumination- Accepts other devices that use USB interface to be charged (attempt to do not use it with devices with high charge capacity like iPad... I dont know if it will work fine).
    - I lost my charger on my last travel. But I am buying another one (black) because it is very useful specially because when traveling the iPhone consumes a lot of battery and this charger has saved me lots of times!- I doesnt come with baterries.
    - I strongly recommend it for that iPhone users that frequently are looking for a electrical outlet on airports!

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