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DIY Infinite Capacity Replaceable 18650 Battery Portable Mobile Power Charger Box
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DIY Infinite Capacity Replaceable 18650 Battery Portable Mobile Power Charger Box

- White FG0000501

Please refer to English description
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Specification

General

Brand: HUAMEN
Type: Potable Moblie Powers
Mainly Compatible with: Apple,SAMSUNG,HTC 8X,HTC,Nokia,Blackberry,Samsung Galaxy S4 I9500/I9505,Samsung Galaxy S3 I9300,Galaxy Note 3 N9000,LG,Sony Ericsson,Motorola,Universal,iPhone 5/5S,Nokia Lumia 920/820,Google Nexus 4/5,Google Nexus 7 2nd,iPhone 4/4S,iPhone 5C,Galaxy Note 2 N7100
Capacity Range: >10000mAh
Battery Capacity (mAh): Replaceable 18650 Battery for Infinite Capacity
Connection Type: Micro USB
Battery Type: Li-ion Battery
Color: White
Material: PC,ABS,Metal

Specification

Input: DC 5V/1.0A
Output: DC 5V/2.1A (max), DC 5V/1A

Dimension and Weight

Product weight: 0.09 kg
Package weight: 0.14 kg
Product size (L x W x H): 9 x 9 x 1.8 cm
Package size (L x W x H): 12 x 11 x 3 cm

Package Contents

Package Contents: 1 x Mobile Power Charger Box
How does it look

New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White

I got it in a cardbox box 

New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White

The box contained the usb box, a usb cable and a manual in probably Chinese (A manual is not needed to figur out how this box works).

New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White

The box has white top and bottom with aluminium sides.

New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White

Everything in the user interface is collected on one side. The box has two usb outputs and one micro usb input. There are 3 blue leds used to show charger state and function and a push button.
The leds can show charger state when the button is pressed.
They show a running light when output is loaded and a flashing led while charging.
The button is only needed to show charge state and activation after overload or battery replacement.

New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White

To open the box, the lid slides off and there is space for four 18650 batteries.
The batteries are not directly in parallel, i.e. it is possible to use batteries with different charge state.

New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White

The box is designed for unprotected batteries, but I could fit a 68.3mm battery in it (It was a tight fit).
This extra length means that unprotected button tops will fit.

New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White

Here I have put a full load for 3100mAh batteries in it.

New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White

To get inside the box I had to remove five very small screws.

New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White

New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White

New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White

New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White

There is a lot of electronic in this box, the reason is that each battery can be connected/disconnected as needed.


Measurements
  • Blue leds is "running" when providing usb power.
  • When the button is pressed in unloaded state, the leds shows charge status (2 leds is on above 3.6 volt, 3 Leds is on above 3.9V).
  • When charging the leds shows charge status and one led is flashing.
  • When finished with charging all 3 leds are steady on.
  • The button will activate the box again after battery replacement or overload.
  • When in standby the box drains the batteries with about 3 uA (Very good).
  • Any load on the output will turn it on (It is very sensitive).
  • The output needs about 140mA load to keep on else it turns off after about 30 seconds.
  • When the box is charging the usb output is turned off.
  • No problem with mixing full and empty batteries.
  • Both A & B output are Apple 2.1A coded (I would have prefered one Apple, one usb DCP).
  • Output turns off when overloaded, button must be pressed to reenable output.
  • Uses 1A from usb when charging.


New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White
New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White

The two output is has the same current capability and also the same coding. The overload trip point slightly above 2.1A looks good.

New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White

With a single cell and 0.5A load (10 ohm) the box works very good with an efficiency above 90% and it will disconnect the batteries at 3 volt.
The slight jumping up and down in the output voltage is not noise, it is due to the regulation and will not affect connected equipment.

New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White
New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White

Using other battery capacities works exactly the same, except for runtime.

New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White

A 0.5A test with four batteries. I had a voltmeter on battery #1 and battery #3. The box connects and disconnects batteries as needed to maintain the output. 

New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White

A 2A test with four batteries. Due to the high current the efficiency is lower.
Battery #1 runs empty at about 160 minutes, the box continues to work on the other batteries.

New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White

Here I have zoomed in on the chart from above. As can be seen the battery connect/disconnect is fairly slow with minutes between.

New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White

The noise is fairly low with 9mV rms and 137mVpp at 0.5A

New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White

At 2A the noise has increased, but it is still a good value with 25mV rms and 195mVpp.

New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White

The box is charging with CC/CV, but the turn off is not working correctly (it is to sensitive and the box will start charging again).
Notice that the "DC input current" is lower than the charger current. This box does not use a linear regulator, but it is reversing the switching circuit and using it for a charge controller (I like it).
This box will charge as fast as possible while keeping the usb current at 1A.

New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White
New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White

No surprice with 2600 and 3400mAh batteries.

New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White

Charging four batteries does take time, here it is about 12½ hour (It is difficult to do it much faster when only drawing 1A from usb).

New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White

Again I have zoomed in on the chart from above, it looks like every 6 minute the charger decides what battery to charger.
In the chart I am only measuring on two out of the four batteries in the charger.

New Design Dual USB 18650 Battery Mobile Power Charger Box for iPhone4 / 4S / 5 / 5S / 5C , iPad , Samsung S4 i9500 , i9505 , LG , MOTO , Nokia , Sony , HTC etc.- White

Reducing the usb voltage shows that it can maintain full charge current down to about 4.5 volt, but probably only when the batteries are empty.



Conclusion

This box has very good electronic for usb output, it can deliver a lot of current with low noise and it will turn off when overloaded.
It is very compact for a 4 battery box and the aluminium frame makes it fairly strong, without any sharp points.
The missing turn off on the charger means that it is important to disconnect the box from power when it is full (Not the same second it is full, but within a few hours), to get the maximum battery lifetime or charge the batteries in another charger.

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Customer Reviews

4.45 out of 5
  • 6
  • 4
  • 1
  • 0
  • 0
See all 11 reviews Write a Review
  • Thomas Stribling
    Yes (0) Color: White
    Great service, great product
    This Charger Box comes in handy as I'm on the go a lot - so one of my many portable devices always needs a charge and an not always near an outlet. I ended up getting this as my brother in law had a similar one during the holidays. We had gone to an all day sporting event where there wasn't way to plug in. While I have a battery case for my phone, it still didn't last. So luckily he had this type of charger and was able to recharge all of us ! Definitely recommend !
    Suggestion
    Great buy, easy to recommend.

    Feb 28,2014

  • Patrick Gagné
    Yes (0) Color: White
    Easy to use
    Nice design, easy to use (not exactly rocket science). Assuming you know why you're buying this, this is a handy little charger box for batteries. Charge times are generally good and everything worked "out of the box" (tested all the LED lights to make sure they worked) even with different combinations of batteries (brands, full/empty, etc). So far, so good.
    Suggestion
    Great buy, easy to recommend.

    May 16,2014

  • Willi Geiger
    Yes (0) Color: White
    Happy so far
    Shipping was reasonable in terms of speed and packaging wasn't too shabby. Tested this puppy over the weekend and it's worked with different sets of batteries, I have a whole drawer full of them lol. User friendly unit so even your sister can use it lol. Working good so far :)
    Suggestion
    Great buy, easy to recommend.

    May 19,2014

  • boonkokling
    Yes (0) Color: Black
    Value for money
    -Easy remove cover for DIY
    -Flexible for all type of different and mixed battery
    -Can detect wrong polarity of the inserted battery
    -Compact and light and really portable
    -Almost charge all my devices with light indicator
    Suggestion
    It is actually same as the white color but the black one somehow cost slightly more

    May 29,2014

  • boonkokling
    Yes (0) Color: White
    Value for money
    -Easy remove cover
    -Flexible for all type of different battery
    -Can detect wrong polarity of battery
    -Compact and light
    -Almost charge all my devices with light indicator
    Suggestion
    -Cover nay be a bit flimsy
    -It will be ideal if come with porch

    May 29,2014

  • Keith Wong
    Yes (0) Color: White
    Very compact DIY Power Bank
    I was surprised when I saw the actual unit. I didn't expect to be that small. Stylish, and great build. Would recommend to anyone, no regrets on this.
    Suggestion
    charging input is only 1A. It would be good if it's at least 1.5A.

    Sep 10,2014

  • Bob Gibbons
    Yes (0) Color: White
    Good so far but still early days
    Haven't had this long but it's been alright up till now. Build quality was okay. Nothing too fancy with this box but seems alright.
    Suggestion
    Great buy, easy to recommend.

    May 22,2014

  • Michael Garrett
    Yes (0) Color: White
    Nice charger box
    Doesn't take forever to charge, lights are clear, straightforward usage, nice price.
    Suggestion
    Great buy, easy to recommend.

    May 18,2014

  • Newyorker
    Yes (0) Color: White
    Mr.
    Nice looking, simple to use and can add your own prefered batteries
    Suggestion
    the tabs are easily broken, if you're not careful with opening or closing the lid to the batteries, it will break easily
    I broke 2 tabs already within minutes of owning this.

    May 10,2014

  • explo
    Yes (0) Color: Black
    great powerbank
    Easy to use, good quality, work perfectly for me
    Suggestion
    None

    Jun 26,2017

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