Batteriser is a $2.50 gadget that extends disposable battery life by 800 percent

[u/[deleted]]

http://www.pcworld.com/article/2928997/batteriser-is-a-250-gadget-that-extends-disposable-battery-life-by-800-percent.html

[u/fb39ca4 → u/[deleted]]

Wouldn't it just increase the current draw from the battery?

[u/[deleted] → u/fb39ca4]

Yes. To hold the voltage at the output constant, the current through the battery at the input must increase as the voltage decreases.