Batteriser – A Battery Life Enhancer
https://vimeo.com/129721924
How it works?
Most new batteries contain 1.5V of energy when first bought. The problem is that many devices stop functioning at around the 1.3V mark. Batteriser uses micro-circuitry that lets you instantly tap into the 80% energy that is usually thrown away.
Batterisers are reusable on new and most “used” batteries and will be available in AA, AAA, C, & D variations.
Source: Batteriser