Connecting DC sources in series (and parallel)

As long as you observe the polarity you will have nooooo problems.
If you need help at all with fundamental electrical math check out the course I partnered with the British Columbia Institute of Technology on:
www.bcit.ca/telc0015

[@jeremyruutel912]

Incredible! Love how your instruction is broken down into pieces. I'm able to comprehend each step by visualizing each step. Great job.

[@rangaiahkaravadi5340]

To what highest voltage the batteries can be connected in series.

[@inamaman9891]

How voltage sources in parallel share load ,for example 6v two batteries would share the load?
How to make equal sharing for example 10 amps load shared equally between two batteries in parallel.

[@munchkineater4226]

sir where can i contact you? hope you find this. i have a really important question. Thank you