TOTO USA has introduced its EcoPower, the first sensor faucet whose power source is completely self-sufficient. The EcoPower faucet generates its own electricity every time water spins its small internal turbine. The electrical energy is then stored in EcoPower's patented rechargeable manganese dioxide lithium battery. With as few as five uses per day, EcoPower's battery life far exceeds that of most public restroom sensor faucets, which rely on disposable batteries or require hardwiring. TOTO USA.