I had a very pleasant purchasing experience, and a good communications throughout.
About the product:
A very good looking and compact Battery Pack. it is compact and works very well with my TomTom where I keep it connected to it using the USB lead supply, which extends TomTom own battery charge by many hours of usage. I kept it running for 6 hours and lost only a third of the Battery Pack charge.The only problem I had was that the instruction leaflet was only in Chinese !! no other language!! and "BAttery Upgrade" could not help because you did not have one in English either. That isone thing you need to improve.