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.
Output of alkaline batteries in this size is 1.5 volts, 900 to 1,155 mAÂ·h (3240 to 4158 coulombs). Modern nickel metal hydride (NiMH) batteries of this size can store up to about 1000 mAh, with an output of 1.2 volts. AAAA: An AAAA battery is 42.5 mm long and 8.3 mm in diameter, weighing around 6.5 grams.