Tukas EV turns an exercise bike into a 2kWh home battery — iF Gold 2025

The HR Bank by Tukas EV is a stationary exercise bike that is also a 2kWh home battery. The Lithuanian startup — founded by Jonas Navickas, who more than a decade earlier helped build Lithuania's first electric car — designed it around a simple observation: people pedal exercise bikes every day, and that kinetic energy is simply wasted. Store it, and a gym routine becomes a small personal power plant.

The bike hides a 2,000Wh battery and multiple inputs: pedalling generates an average 50–150W (up to 500W), and the same battery accepts solar panels and wind turbines, with built-in MPPT charging. Fifteen minutes of cycling fully charges a smartphone, an hour powers a laptop, and the full battery can run household appliances through a 230V output. The frame uses recycled aluminium, the side panels are birch plywood, and the Italian Napa leather trim turns an energy device into a piece of furniture.

Repairability is built into the concept: side panels swap in about a minute, components are replaceable, and the battery is designed for long-term use rather than replacement cycles. Tukas EV positioned the product for homes, offices, schools, camper vans and emergency backup, framing energy independence — not fitness — as the reason to buy.

The design won an iF Gold Award in 2025, the top distinction iF gives to only 75 designs each year, plus a Red Dot Award 2025. TechRound placed Tukas EV on its list of Europe's most innovative sustainability companies, and coverage in engineering and design media treated the HR Bank as a genuinely new category: an energy source you exercise on.