Overall charger is good, but it start to produce high frequency electrical sound when charging process is finished. Seller commented that "there is no problem with charger". I cannot recommend it for using in bedroom because this sound can be quite annoying. Charging voltage of my copy (for Li-ion 3,7V) is 4,18V, fully charged batteries are 4,15V.
Very fast shipping. Received after 2 weeks. Charger is accoding to the description. I have tested it an is is working well. Recommended seller. Could not test it with LiFePo4 batteries yet.