Really excellent external battery!

Being too often confronted with problems of discharged battery with my smartphone (and of course always when I have the greatest need), so I paid special attention to the presentation of the product, and as soon as it has been proposed for pre-order on the Amazon website, I booked two copies I use the past few weeks.

What I was looking especially, it was the ability to quickly charge my smartphone, Samsung Galaxy S4 while using it extensively and that, keeping some mobility.

This external battery has done its job, it's the least we can say.

It easily allows me to make three full recharges considering that the battery level of the smartphone is, when I connect it to the external battery to 10-15%.

I emphasize the fact that the vast majority of the time, I use intensively smartphone while charging.

Side footprint, this external battery can easily slip into a pocket where a backpack, here are its dimensions: 65mm (width) x 140mm (height) x 23mm (thickness).

As regards its weight, it is 300g.

This external battery is equipped with 4 LED control indicating its state of charge: 25-50-75-100% (just push the ON / OFF button and the charge level is indicated.

These same LEDs indicate continuously the charge level when reloading the external battery.

External Battery comes with a small USB cord / MicroUSB a length of 17cm and white, and two adapters (MicroUSB to MiniUSB and MicroUSB to iPhone-compatible plug).

At the outputs, there are two: DC 5V / 1000mA and DC 5V / 2100mA

Personally, I always use the output DC 5V / 2100mA for charging a Samsung Galaxy S4.

Documentation side, a small slip (available in English only) with the product. Basic information one finds there, precautionary principles, etc.

The small leaflet clearly states (in English) the product needs to be recharged before use, while the packaging (where everything is indicated in French), it is clear that the product is pre-loaded.

As a precaution so I checked the state of charge before first use, and in my case, the product was indeed well preloaded.

Latest information, I take good care to let this external battery charge several hours to be sure to benefit from any ability, so I do not trust myself exclusively to LED control, as during discharge, the last 50 % sometimes seem to fly much faster than the first ... it's always good to know.

In summary, I am very pleased with this external battery, it fulfills its function perfectly.

More stress to the idea of ​​seeing my smartphone out of power at the wrong time, and being rotated between two external batteries, I can finally move about peacefully knowing that I always have a reliable source of energy.

I therefore strongly recommend this product.