The K2R-803 cell phone portable charger has a LED micro usb cable, a LED iPhone 5 usb cable and lights to indicate what it is doing. It has a monitoring system with over charge, over discharge, over current, over voltage, short circuit, over load safety with dual output AND it charges two devices at once.
The portable charger must be charged before use. When you plug it into the outlet to charge, the cable port will turn red indicating it is charging. There are 4 lights located on the side of the device that will flash as it is charging. A full charge is when all blue lights are lit up INCLUDING the cable port. It takes about 8-10 hours to charge completely.
This is indicating that the portable charger is being charged
My personal experience:
I read the little instruction paper that came with it and it was very straight forward. I plugged the charger in for about 8 hours and then proceeded to plug my phone's cable into the device. At first I was a little confused because it came with two cables, one for the iPhone and then one for any other device. So at first, I plugged it in using one of the lightning cables it came with and it was not indicating that my phone was charging. I then just figured I could use my phones lightning cable. I plugged it in and BAM, my phone was charging.
This is showing that the device is charging. The blue lights
show how much of the device has been charged
It takes a little while for it to charge, but I am thinking it is because I use my phone so much while it is charging that it just continues to suck the battery. If you placed it aside and did not touch it, it probably would charge faster. Then what is the point of that? Seeing as it is a portable charger and all!
I love how convenient it is though. While out and about, doing my errands, I can simply plug my phone into the portable charger and know for a fact that my phone will not die.
I received this product for free from Tomoson in exchange for my honest opinion.