Performance -
Performance of a battery is more than just “how long does it let me use my phone” it is also about incidentals and of course aesthetics. Incidentals are items like grip, weight, heat buildup and ease of use. Aesthetics are becoming more important because nobody wants an ugly hunk of plastic sitting next to their expensive device.  So let’s talk about each of these in turn and see what we get.

Battery Life -
The amount of “charge” time you can get out of any portable power source is the most important reason to buy one. In some cases the battery stuffed inside is enough to recharge your phone (or other device) once or maybe twice. The RP-PB04 has a 10000mAh battery that was able to charge an iPhone 5 from 10% to full a total of five times. It was able to recharge a Note II from 10% to full a total of 4.5 times. In short we were impressed with the charging capabilities of the RP-PB04.

Heat -
The Ravpower RP-PB04 did not heat up or create any additional heat which is good if you want to use this inside a laptop bag or something similar.

Aesthetics -
The RP-PB04 is a fairly clean looking product. It is not going to win any awards for beauty or inspire you with awe, but it is also not going to look like crap when you are using it. It is one of the cleaner looking ones that we have seen and it is functional to be sure.