modality - a method of therapy that involves physical or electrical therapeutic treatment. rehabilitation - the treatment of physical disabilities by massage and electrotherapy and exercises.
Alkaline AA batteries are rated 1.5 volts, while NiMH AA batteries are rated at 1.2 volts. NiMH generally refers to a battery being rechargeable and to the materials from which the battery is constructed.
For a typical 12 volt battery this. voltage range will be between 12 volts to 10.5 volts. At 10.5 volts the battery is considered. fully discharged. Typical units of battery capacity are expressed as milliamp-hours or mA*h and for larger. batteries amp-hours or A*h.