SW4: Batteries have been around for a long time, but it’s only relatively recently that we have had the Lithium Ion cells used in our vaping devices (and other places). We go deep on batteries: from their history, to their composition, different configurations and of course practical safety tips.
Internal Structure of Lithium Ion Battery
Mooch is the authority on battery testing and you should check his data and results whenever you want to know about specific batteries.
Test Results: https://www.e-cigarette-forum.com/blog-entry/list-of-battery-tests.7436/
Mooch’s blog: https://www.e-cigarette-forum.com/blogs/mooch.256958/
Pictures of battery configurations below from https://batteryuniversity.com/learn/article/serial_and_parallel_battery_configurations
Once you know the Amp limits of your batteries, use this simple Ohms Law calculator for determining safe builds for your particular setup.