The battery has a relatively normal size and weight comparable to battery packs.
Compared to the other chargers , the Astro E4 * has a newer, much sleeker design. Our review unit was white high gloss lacquer with four LEDs for charging status. In addition, it has an internal battery that can be used as a flashlight at night. The external battery has 2 USB outputs, so you can charge two devices simultaneously. The external batteries include 3 adapters, 1 USB cable, manual, and a mesh pocket.
The Application :
The usage is very simple, since the battery is fully charged on supply. If the battery capacity is used up, you load it easily with the provided micro USB plug and USB cable. This plugs the adapter into the micro USB connector on the intended side and connects the USB cable. The whole thing then simply recharges via the computer or notebook. For those who own smartphones or tablet USB power adapters, the external battery can also charge it via the wall outlet. The charging process is greatly accelerated. If one wants to charge the smartphone or the tablet one can charge it with either one of the adapters or the USB cable. Or just use the charging cable from your phone, if this has a USB port. When charging, you can choose between two terminals : the 5V / 2A or 5V / 1A connection. Now you only have to press the button on the front panel to start the loading process. When no device is connected, the battery automatically shuts off to reduce the self-discharge.
Type: Lithium Ion
Size: 123 x 74 x 23
Input: 5V / 1,5A
Output 1: 5V / 1A
Output 2: 5V / 2A
Charging cycles: 500+
Security mechanisms: Overload protection, over voltage protection, over-discharge protection and short circuit protection.
According to the manufacturer it’s compatible with the following devices:
Apple: iPhone 5 4S 4 3G / iPad 4 3 2 1 iPad mini, The retina iPad (iPad 4) / ipod touch
Samsung: Samsung Galaxy S4 S3 S3 Mini S2 S / Galaxy Note 2 Note / Galaxy Nexus
Google: Nexus 7 / Nexus 10
HTC: One X, S, V / Sensation XE XL / EVO 4G 3D/ Radar 4G / Inspire 4G / Vivid 4G / Wildfire S / Incredible 2 S / Rezound / Desire X, C, V, HD, S, Z
Amazon: Kindle / Kindle Fire
Nokia: Lumia 920, 720, 620, 520
BlackBerry: Z10, Q10 / Curve / Storm / Tour / Style / Bold / Torch
Sony: Xperia Z / X1 / X10 / X8 / Arc / Neo / Play / Mini
Motorola: Droid Razr Maxx Bionic / Triumph / Atrix / Milestone
LG: Nexus 4, Optimus 4X, 2X, V, S, T, 3D, 7, G Pro, L9 / Motion 4G / Lucid 2 / Spectrum 2 / Touch
This external battery charger is currently in the price / performance ratio one of the best on the market. For just 29,99 $* you can charge at least 6 times your smartphone or a tablet complete. In addition, it is a really good looking external battery. The processing of the battery leaves nothing to be desired and also its charge cycles beyond the 500th.