How many hours does 5000 mAh, 7000 mAh, 10000 mAh battery last on phone or tablet ? Should I expect battery life more than 24 hours ?
There are many factors that have impact on battery life. The lasting of battery depends on device's hardware, software, settings and also on how intensive do you use it.
For example, the battery consumption is increased when you have a phone or tablet with larger screen, when using high screen brightness, when there is a low network signal, when using Wi-Fi, mobile data, GPS or bluetooth, when vibrations are turned on, when there are many applications running in the background etc.
The lasting of phone battery and tablet battery is not 100% comparable. You should expect that battery with the same mAh, will generally drain faster in case of tablet, because it has larger screen.
For an average phone usage during a day, that includes using of mobile data, web browsing, email receiving and sending, making a couple of calls, taking a few photos, the battery should last approximately:
5000 mAh - 1.5 day
7000 mAh - 2.5 days
10000 mAh - 4 days
To compare the lasting of battery you can also use stand-by time. It is the officially quoted longest time that a battery will last, when the phone is constantly connected to the GSM network, but is not in active use. The information about standby time is usually provided by phone manufacturers.
Depending on device, standby times may be different. Standby time for each battery capacity is often around:
5000 mAh - 300 hours
7000 mAh - 450 hours
10000 mAh - 700 hours