That grey box at the top of the photo is a modular power supply unit for a rack-mounted server system. [Sebastian] decided to repurpose it as a charging source for his RC batteries. He chose this ...

Corsair has confirmed that an issue affecting its RMe power supplies, which caused an unnerving clicking noise, has been resolved, and says it will replace a unit for any affected customers.

A review of server power supply unit (PSU) design outlines future trends in power density, efficiency, control, and thermal performance.