Carrying a battery on one's back

[mifletz]

Pedalling with a battery on one's back

How easy, common and safe is it to pedal with a battery in one's backpack as in this clip?
http://www.youtube.com/watch?v=RK38Nw_KNmY

 

[mifletz]

After seeing this
https://www.youtube.com/watch?v=7-xPHopebiE
I wouldn't want an Li battery on my back!

 

[Lungcookie]

I have to say that I have over 200 miles on my BakPak style battery. I have had NO issues with using a BakPak. I like the way it makes the bike lighter.

 

[paul]

that makes me not want to carry my phone lol.

After seeing this
https://www.youtube.com/watch?v=7-xPHopebiE
I wouldn't want an Li battery on my back!