"ONE = TWO" which can be thoroughly used to the last if the battery is designed as a spring type

In spite of the fact that there is still power itself, there are cases where it will not work because it is less than the electric power to operate with that device. The watch that moves with two batteries will not move, if you remove the battery from there and put it in a smaller watch, there should be sometimes that it still moves normally.

Thinking about that situation in reverse, saying, "Because it must move with two, it will not move, so if you pack the two in one place you can move it by adding just one new battery" It may not be understood, but once you look it is "I see that" I understand that this spring type battery design "ONE = TWO"is.

Red dot online: design concept
http://www.red-dot.sg/concept/porfolio/o_e/EG/R025.htm


ONE = TWO - Spring Battery by Huang Kun, Meng Xun, He Ting & Liu Yuan »Yanko Design
http://www.yankodesign.com/2011/12/09/spring-power-forever/


As you can see, it is a battery shaped like a spring.


As for what is useful in this way, as an image, it looks like this figure, first use it as an ordinary battery.


I ran out of power because I ran out of power.


Stuff two batteries that are unusable into tightly packed in one place and add the remaining energy and pack two bottles into one space. Because it is a spring, the length changes as it gets tight and it enters exactly. In the end it is a design proposal that you can continue to move using 1 new battery + 2 old batteries, 3 in total.


It is not clear how many possibilities can be realized, but conceptually certainly there is such a thing I will be able to make use of the spirit of "mottainai".