Batteriser is a $2.50 device that extends disposable battery life by 800 per cent

DID you know when a disposable battery stops working, there is still close to 80 per cent of its power remaining?

The team from the Batteroo office in Silicon Valley certainly did and now they have created a new device to ensure batteries are operating to their full capacity.

Known as Batteriser, the device — crafted from .1mm thin stainless-steel — slides over a range of battery types and promises to increase their life by 800 per cent.

Founder Bob Roohparvar, a computer science professor at California State University, likened the technology a tube of toothpaste.

“If you just squeeze from the top, you’re only going to get so much out of the tube,” he told CNN.

Mr Roohparvar said he hoped the product would shake up the $14 billion disposable battery market.

“Batteroo is the first to unleash existing unused power from a seemingly powerless battery and by extending battery life by up to eight times, Batteriser pays for itself with the very first purchased pack,” he said.

“Why throw away perfectly good batteries, or waste money buying new batteries, when we now have a technology that saves money, saves energy, and can cut the number of batteries that end up in landfills by more than half.”

Currently the only device of its kind, Batteriser will be available for AA, AAA, C and D-cell batteries, and will retail at under $US10.00 for a pack of four sleeves.

The product will be available for purchase on Amazon later this year.