I have a 2012 Nexus 7 and the original charger got broken. I purchased a Belkin "MIXIT" 2.1A charger for it, and the thing was taking something like 10 hours to charge. When I use the 2A Chicony charger that came with another HP tablet, the Nexus 7 charges in a little over 3 hours (normal). When I charge the HP tablet with the Belkin charger, it charges quickly. So what am I to make of this? Why does the Nexus 7 charge so slowly on the Belkin charger. The same cable is being used.

I got one of those cheap in-line meters from gearbest. It says that the Nexus 7 on the Belkin charger never draws above 0.76A. Nexus 7 on HP charger: 2.6A. HP tablet on Belkin charger "3.89A". So I'm assuming that the meter is defective.