Cited as a reference
Fun with a few 9V batteries. (244 of them)
Why people recommend it
Cited in threads on series battery stacks as an example of a 244-cell 9 V stunt, which answerers describe as reckless rather than instructive.
Watch for: a stunt, not a build to copy
In their words
There are many opinions about a stunt a guy did on youtube, where he connected 244 9v batteries together in series.
makerofthings7 on electronics.stackexchange.com, Mar 2015. CC BY-SA.