About Colorfly G708 battery claimed 3000 mAh. It’s Chinese manufacturer and you know, they like to claim a little bit more, than a real capacity. You can find more information about the device here: Colorfly G708 benefits.
When I have rweceiced the tablet PC first time I tried to check the capacity. It was first or second charging from empty battery till full. For the charging was used a charger with 400 mA current ( 400 mA max was written on the charger body). So, charging time was about 5 hours. What does it mean? Real capacity of the battery could not be more than 5x400mAh, i. e. something about 1.9 Ah. Just phisics laws.
Next, the tablet PC was used several days and the owner of G708 decided to make clearer test with photos, current tester and the same charger.
So, what did we see? Charging time: 8 hours 37 minutes, it’s about 8.62 hours (for multiplying). Current… from 355 mA to 424, mid current is about 380 mA. 380 mA x 8.62 h is about 3.3 Ah. Efficiency of charging not more than 90%. About 3 Ah we have at the battery. In the case Chinese manufacturer claimed true about battery capacity.