Electronic cigarettes, known colloquially as “vapes” or “e-liquids,” are a category of electronic cigarette devices that deliver a vapor from a battery pack.

Some vapes, however, are more robust than others.

According to a study published in the journal Electronic Cigarettes, a new class of e-likes, such as the Ekso, is much more durable than its predecessor, the Ego.

The new class is better able to hold and deliver the amount of vapor from the battery pack, according to researchers at Imperial College London.

The study was published in Nature Communications.

The study, led by Dr. David Beasley, from Imperial College, and his team at Imperial’s Department of Engineering, tested e-cigarette battery cells and their electronic components in various temperature environments.

“This work shows that in order to be a viable product for use in the workplace, battery cells need to be strong and durable, and that these characteristics are in fact what make e-cigarettes a more robust product,” Beasley said in a statement.

“E-lighter batteries are better for a number of reasons, including better performance, greater battery lifespan and higher performance in high temperatures,” the researchers wrote.

“The ability of eLiquids to deliver the same amount of energy as a regular cigarette requires the battery to be durable and reliable.”

The battery is also more durable in higher temperatures, the researchers said.

The battery is a material that has been developed over the past decade, but its manufacturing process is still a relatively new one, the study said.

“We have tested eLix batteries and found them to be much more robust and durable than previous generations,” the study authors said.

“As such, eLIX batteries may offer a viable alternative to traditional batteries for a variety of applications in the near future.”

The researchers also found that the batteries contained more than double the number of polymers in them, which makes them more resilient and able to withstand more stresses.

“The amount of polymer in the battery is important because the amount the battery can withstand depends on the temperature, temperature stress and resistance,” the team wrote.

“A more resilient battery will have more polymers and this is likely to result in more durable battery.”

A battery that’s made of a material stronger than the material used to manufacture it will allow it to withstand greater stresses, including heat and shock, the team said.

Ekso batteryThe Ekso battery was developed by German company Elektronik and used in the EGO.

The battery uses a new form of lithium-ion chemistry that uses a material called nickel that has a lower melting point than carbon.

The researchers said the nickel helps keep the battery flexible and durable.

The Ekso is manufactured by Ekso and is the only e-liquid battery currently available.

“There is a need to reduce the production of lithium ion batteries as the demand for them grows,” Beaser said.

He said it’s important that the material is stronger than nickel, and the researchers say the new materials were able to provide more stability to the batteries than previous e-cig batteries.

“Our research shows that nickel and nickel-based materials are much more resilient than other materials,” Beasy said.