The compressor you showed is based on the Omega Trail Charger which is capable of filling PCP guns and bottles up to 4500psi. I cannot say anything about the specific model being sold by Pellet-guns and I suspect it should work just fine, however, I have ordered the Omega as I have learnt my lesson in buying cheap and then buying again.
There are very few small portable compressors available that can fill both your PCP airgun and also your small tanks but I believe the Omega is the better choice. It is slightly heavier than other portable units but it can do more (See notes below). In terms of filling times and how it operates, watch this video.