I put the batteries into a Tascam DR-70D a (mobile Tonrecorder), which already requires "something more" in current phantom power (Strumversorgung for external microphones) and am excited as with other Geröäten previously. I early on started Eneloop batteries to use because the product still belonged to Sanyo. Since its acquisition by Panasonic, there is also the Pro version and which can rightly complain "Professional". Unlike batteries, these current donors make especially not as long limp. I've have to dispose of a single Eneloop battery. For other brands have often.