Superdielectrics, a UK-based company, is developing a polymer-based battery technology that promises to be cheaper and more recyclable than current lithium-ion batteries. The company claims its technology could even be integrated into contact lenses. However, a significant hurdle remains: the energy density of these polymer batteries needs to be substantially improved to effectively compete with the performance of existing lithium-ion devices. If Superdielectrics can overcome this challenge, their technology could revolutionize energy storage across a variety of applications.