A renal failure therapy system (10) includes a dialyzer (102)； a blood circuit (100) in fluid communication with the dialyzer (102)； a dialysis fluid circuit (30) in fluid communication with the dialyzer (102)； a housing supporting the dialyzer (102), the blood circuit (100) and the dialysis fluid circuit (30)； and at least one electrical socket (170) held by the housing, the electrical socket (170) providing a voltage output dedicated to a particular voltage type of external electrical device (200) for powering or charging the external electrical device (200), the at least one electrical socket (170) including electrical insulation for protecting a patient while powering the external electrical device (200).
