Skip to main content

This battery can twist like a stick of gum, and might power your next smartwatch

Batteries, while an essential part of our beloved gadgets, are rarely very interesting. It’s even more unusual to say “wow” when you see one. This isn’t the case with ProLogium’s flexible, super thin gadget battery. It can be flexed, bent, twisted, or cut into pieces — and still function as normal. Yep, we did indeed say wow when we saw it in action.

We watched as a pair of scissors chopped off the corners of the battery.

Called an FLCB battery, Prologium describes it as the world’s first bendable lithium battery. This incredibly thin cell has a wide range of uses, but due to its high degree of flexibility it’s ideal for wearable devices. How thin, and how flexible? It’s less than 2mm thick, and the first example we handled was a strip around 5-inches in length. It could be treated like a stick of gum, folded over and then straightened out again. It’s this complete flexibility that sets it apart from similar batteries promoted by LG and Samsung, and gives us hope that battery explosions are a thing of the past.

ProLogium showed the battery inside the strap of a smartwatch, where its capacity could be as high as 1,000mAh. For comparison, the LG G Watch R’s internal battery is rated at 410mAh, and lasts for around two days. The same FLCB battery can be rolled up, or twisted into many other shapes, making it very versatile.

Very safe, even when chopped up

Batteries can be volatile little things, and one shouldn’t go around abusing them with sharp objects. You certainly wouldn’t start cutting them up (they’re known to explode or inflate if damaged). The FLCB battery is a solid-state cell, with the two anodes completely isolated from each other. We watched as a pair of scissors chopped off the corners of the battery. The attached light went out as parts were cut off (the circuit had been broken by the scissors), but amazingly returned again. There’s no chance of explosion, leaks or fire, because there’s no flammable or liquid material inside. In battery terms, it doesn’t get much safer — and safety is exactly what we want from devices attached to our body.

Photo credit: Digital Trends / Andy Boxall
Photo credit: Digital Trends / Andy Boxall Image used with permission by copyright holder

While we tend to think of wearable tech as the ideal home for ProLogium’s flexible battery, we were also shown an insole to go inside a shoe, where the battery powered a heated pad to give you toasty warm feet, without a ridiculous external battery pack. It’s also suitable for connected devices in the home, and any other products with an unusual shape or size.

An early version of ProLogium’s super thin, non-flexible version of the LCB battery made its way into the Power Flip case for the HTC One Max, and it will be fascinating to see which company embraces the new flexible versions. At the moment, it is more expensive than its non-flexible counterparts, but that will change as production increases and flexible components get cheaper.

ProLogium’s next project targets your smartphone

ProLogium’s next major project will be properly revealed later this year, and it’s even more exciting. It’s a Li-Metal battery designed for use in smartphones. A Li-Metal battery promises to extend the standby time seen using a standard Li-ion battery by up to two times, all in a cell which is essentially the same size. ProLogium told us Li-Metal batteries are challenging to produce (and when they say challenging, they mean dangerous), but it has successfully tamed the process where others have failed.

Photo credit: Digital Trends / Andy Boxall
Photo credit: Digital Trends / Andy Boxall Image used with permission by copyright holder

We’ve heard about ambitious projects where our phones will suddenly get longer-lasting batteries before, but they don’t always come true. ProLogium says several companies are interested in adopting the Li-Metal battery, but it’s holding out for a non-exclusive manufacturer deal, so it can ensure its survival should anything unexpected happen. Expect more news during 2015, and hopefully, confirmation of a partner at the same time.

With batteries to potentially make wearables last longer and look better, plus one which could double the standby time on our phones without increasing size and weight, ProLogium is a company we’ll be watching closely over the coming year.

Editors' Recommendations

Andy Boxall
Senior Mobile Writer
Andy is a Senior Writer at Digital Trends, where he concentrates on mobile technology, a subject he has written about for…
Razer Anzu smart glasses deal knocks $140 off the price tag
The Razer Anzu smart glasses placed on top of an open book.

While smartwatch deals have slowly claimed their place in the mainstream, smart glasses haven't turned out to be as popular. Gaming-focused brand Razer, however, is trying to renew interest in smart glasses with the Razer Anzu, which you can currently purchase from Best Buy at $140 off. If you'd like to give them a try, they're available for just $60, less than half their original price of $200.

There have been failures like the Google Glass and Snap Spectacles, and hopeful attempts like Oppo's Air Glass and Apple's secretive project, but the Razer Anzu smart glasses take a different spin on the wearable device by designing them for indoors. While they come with polarized sunglass lenses, their clear lenses are more useful with their blue light filter, which protects your eyes from screen glare to prevent discomfort even after hours of playing video games or working from home. The smart glasses, which also have a built-in omnidirectional microphone and speakers, may also be more comfortable to wear for an extended period of time compared to headsets and headphones. You'll enjoy smooth, stutter-free sound with the Razer Anzu's low latency audio with a 60ms Bluetooth connection.

Read more
The best Samsung Galaxy Watch 4 screen protectors
Person holding skateboard while wearing the Samsung Galaxy Watch 4.

A new, sleek design and digital bezel help the Galaxy Watch 4 stand out in the crowd and set it apart from the traditional style of the Galaxy Watch 4 Classic. Whether you've picked up a 40mm model with a 1.2-inch Super AMOLED screen or opted for more screen real estate with the 44mm model, that stand-out design needs protecting from scratches and knocks. That means it's time for our picks of the best Samsung Galaxy Watch 4 screen protectors, with something to suit all budgets.

These screen protectors will all fit the 40mm or 44mm models of the Galaxy Watch 4. If you've got a Samsung Galaxy Watch 4 Classic, these won't fit.
Spigen Glas.tR EZ Fit Screen Protector

Read more
How to remove watch links from the strap on your new watch
how to remove watch links fossil q explorist

There’s no such thing as a one-size-fits-all smartwatch. If your wrists are on the smaller size, then you may find that your new smartwatch is dangling from your wrist and sliding up your forearm. No need to worry — it's a common problem. Chances are there are at least one too many chain links on the strap, but adjusting a metal-link smartwatch band isn't as difficult as you might think — and doesn't usually require a trip to the jewelers.

We'll take you through everything you need to know and the tools you'll need handy to remove links from your smartwatch so it fits snugly on your wrist.

Read more