All 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Word Description
mA MilliAmp
mAH Milliamp-hour
Maintenance-Free Battery A battery that does not require water addition under normal service conditions. Both positive (+) and negative (-) grids are made of lead/calcium.
Marine-Cranking Amps (MCA) A rating that is used to define the number of amps that a lead-acid marine battery at 32F (0C) can deliver for 30 seconds and maintain at least 1.2 volts per cell (7.2 volts for a 12-volt lead-acid battery). This artificially high rating should not be confused with CCA.
MCA marine cranking amps
Memory Effect A condition that is created when a NiCad or NiMH battery is partially discharged and recharged repeatedly, causing a loss of capacity.
MilliAmp (mA) One one-thousandth of an amp
Milliamp-hour (mAH) One one-thousandth of an amp-hour
Miniature Battery A button- or coin-shaped battery i.e., a button cell or coin cell with a diameter greater than its height. The term miniature is also used to describe batteries made up of miniature cells.
Multimeter Also known as a volt-ohm-meter (VOM), it is an instrument designed to do a variety of electrical testing, including voltage, amperage and resistance.