Tedium - Life Between Charges 🪫

Today in Tedium: Perhaps this sounds a little over the top to describe it this way, but our lives are basically enabled by batteries of different shapes and sizes and functionalities, with one key factor tying them together: They die. If you’re on a road trip and the battery on your Game Boy dies, you’re out a good game until you can get your alkaline batteries replaced. If the battery on your phone dies, hope you can find a charger. If the battery in your vehicle dies … well, good luck finding a jump—and hope you’re somewhere convenient. Batteries are key building blocks for how we live, and their improvements over the years have enabled us to get further and further off the electric grid while still being able to stay connected and charged up. Today’s Tedium offers a little history on rechargeable batteries—a history that goes way beyond the lithium-ion battery, by the way. — Ernie @ Tedium

An 1899 Ever Ready wooden Bicycle Lantern, one of the earliest examples of a flashlight-type device produced by the modern-day Energizer. (via Flashlight Museum)

In a way, flashlights have always been the great testing ground for batteries

If there was one device that one might consider the defining use case of the battery, it’s definitely the flashlight.

For one thing, it’s a device that would not have existed unless dry-cell batteries were invented. In fact, its existence is thanks to two inventions that came about during the same period—the dry-cell battery and the portable electric light. The flashlight, simply put, combined those two things into one object, and over time, proved a killer app for both technologies.

It took a little while, admittedly; while examples of the flashlight date to the late 19th century, with imperfect bulbs and weak batteries, the technology really came into its own starting in the 1920s. In fact, the flashlight might have lived up to its name more in those early days—in that it was just a very limited “flash” of light that almost immediately went out.

Flashlights are a great testbed for batteries and lightbulbs alike—after all, you need powerful bulbs to expose light in a dark room, and you need efficient batteries that can last a long time to power those bulbs.

It may be the most tedious thing Tedium hasn’t covered in any significant length. That changes today, I guess.

An ad for an Everready flashlight, circa 1922. (via Google Books)

The flashlight shares a long lineage with the battery—Conrad Hubert, the founder of what became the modern day Energizer, had acquired a patent for a handheld flashlight as early as 1898, a device sold under the Ever-Ready Company name.

As I wrote last year, the on-battery power meter was inspired partly by a hunting trip in which a battery’s charge was measured by testing it in a flashlight. And in many ways, the rechargeable battery made its big debut in a consumer context thanks to the flashlight.

While we’re largely not using the same battery technology, one can see the connecting lines in consumer use cases, in which devices can be charged on the wall rather than the batteries being separated from them.

It’s all a credit to a German-American inventor who saw a market for rechargeable flashlight where others saw none.

The inventor isn’t getting a ton of credit for it these days (the poor guy doesn’t even have a Wikipedia page), but he may have pioneered the way that we charge our batteries in the modern day.

Dr. Leslie K. Gulton, as featured in a 1963 New York Times profile.

The German-American scientist whose flashlights gave rechargeable batteries a commercial context

Dr. Leslie Gulton was a brilliant chemist and a brilliant businessman whose great work was undercut by a World War. But despite the fact that , and like many brilliant chemists and brilliant businessmen who left Europe just before World War II, he had to start over when he got to the U.S.

As noted in a 1963 New York Times profile on Gulton, he had found early success in building a research institute at the University of Frankfurt into a successful money-making business by utilizing its resources for contracts in private industry—fulfilling a need in the years after World War I. Soon, he was launching a chemical manufacturing business in France with his wife Edith.

But as the rise of Nazi Germany became harder to ignore, the Gluttons moved to the United States, where Leslie hoped to move into academia—only to have World War II disrupt their plans. By 1941, Leslie Gulton and a few business partners had launched a factory in New Jersey, which produced a variety of goods for war.

The war gave Gulton Industries the opportunity to build a business that, after the war, was highly diversified and well-suited to build a variety of products, including in the electronics and aerospace fields.

But it was a product that marketers were convinced he couldn’t sell that proved his company’s most notable legacy. The idea leveraged the company’s growing skill in developing nickel and silver cadmium batteries, two types of rechargeable battery that were many consumers’ first interaction with rechargeables. Gulton had developed battery tech for satellites that was intended for long-term storage of energy, and it was looking for a way to commercialize the technology.

And yes, they found it with the flashlight. Essentially, Gulton wanted to sell a rechargeable flashlight with a battery that could be plugged in. It was one of the first examples of this kind of device in the market, and he couldn’t find any takers from other companies. The problem? The battery, mixed with the design, added additional cost to the flashlight, which was seen as pushing the device out of many budgets.

The Gulton Lifelite, a high-end flashlight that was one of the first consumer products that featured a rechargeable battery. Despite not being a consumer-goods company before this point, Gulton made it because it couldn’t convince other companies it was viable. (via eBay)

Gulton’s company pitched the idea to manufacturers of flashlights, but found no takers. Eventually, Gulton got into the flashlight business itself, selling the device as the Lifelite, a popular type of flashlight throughout the 1960s.

Like modern lithium-ion batteries, the battery was sealed and non-replaceable. Unlike modern lithium-ion batteries, it could be disconnected from the main device and plugged in on its own. While more expensive than most flashlights of the era, it found its audience, people who quickly figured out that having a battery baked into the flashlight itself meant you didn’t have to spend so much money on alkaline batteries.

The success with the flashlight, shown in the Gulton ad above (no help from Google, which thought I was trying to say “fulton”), was a big focus of the Times piece.

The AMC Amitron concept vehicle.

Unfortunately, its battery-storage follow-up wasn’t quite so successful. Gulton had worked with American Motors Corporation on battery-based electric cars, which were still quite experimental during the late 1960s. The vehicles based on the battery technology failed to move beyond the concept stage (likely because they looked incredibly weird), and AMC was facing huge losses elsewhere, leading the electric vehicle idea to get shelved. Soon enough, Gulton Industries had sold and Leslie Gulton left the company he founded.

But the surprising thing is that, despite the many corporate mergers that followed, Gulton Industries largely survives today, thanks to a very specific niche—barcode printheads. And shockingly, the company managed to carry the legacy of its flashlight era into the modern day, thanks to longtime employee Om Srivastava, who was hired in 1964 and eventually bought the company and ran it until his 2020 passing.

While Gulton doesn’t make flashlights today, it did stick around while largely avoiding outsourcing. That’s pretty cool.