Most devices require a minimal voltage to continue functioning. When your alkaline battery drops below that threshold, it still has 80% of its voltage left, but it is essentially useless.

This is where Batteriser comes in. It’s essentially a voltage booster that sucks every last drop of useable energy from ostensibly spent batteries. So, instead of using just 20 percent of all the power hidden inside of your Duracells and Energizers, Batteriser makes effective use of the remaining 80 percent.

Voltage boosters are nothing new, but Batteriser scales down the technology to the point where it can fit inside a stainless steel sleeve less than 0.1 mm thick. Roohparvar says the sleeves are thin enough to fit inside almost every battery compartment imaginable, and the combined package can extend battery life between 4.9x for devices like remote controls and 9.1x for various electronic toys.

“The Batteriser has boost circuitry that will boost the voltage from 0.6 volts to 1.5 volts and will maintain voltage at 1.5—which is a brand new battery,” Roohparvar says. “There’s actually no IP [intellectual property] in the boost circuitry. Our technology is really a miniaturization technique that allows us to build the sleeve. We have some IP in some of the IC circuits that are in there, but the key is we’ve been able to miniaturize the boost circuit to a point that no one else has been able to achieve.”

Too good to be true? Snake oil? My gut says, this is the real deal. And the test is simple enough to run. Run down the batteries, then add the sleeve, reinsert. If it works as advertised, we’ve got a winner.

Side note: Read the linked article. There’s a fascinating story about industrial espionage that sounds like it came from the marketing department, but still interesting.