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.
How many milliamps are in an AA alkaline battery? The difference of voltage ratings between the two types of battery is because the alkaline battery starts at 1.5 volts but depletes over time, giving it an average voltage of 1.2 volts, which is the same as the NiMH battery.