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.
In most cases, youâll be using an 18650 battery, and the usual 10 A rating will be more than adequate. Using ohmâs law (I = V/R, or amps = voltage/ohms), you can see that even for sub-ohm builds of 0.7 Ï, 4.2 V would lead to 6 amps of current, which is still within the capabilities of most large batteries.