Tolerance in % - Limit for allowable variations for a given quantity, expressed as a percent of the rated value.
Reversal - The changing of the normal polarity of a battery due to overdischarge.
Voltage Depression - An abnormal drop in voltage below expected values during the discharge of a battery.
RS232C (Recommended standard RS232C) - Standard defining the communication circuits between devices for synchronous and asynchronous transmissions on the following types of lines - two-wire, four-wire, point-to-point, telephone lines and local links with short cables. Though the standard covers only transmissions over distances up to 15 meters, it is often possible to ensure correct transmission over greater distances using high-quality shielded cable in a reasonably satisfactory electrical environment. Most terminals and devices on the market can implement this transmission standard.
Noise level - Acoustical decibel level of a source of noise, measured according to the applicable ISO standard.
Self-Discharge - The loss of useful capacity of a battery on storage due to internal chemical action (local action).
Interference (high-frequency) - High-frequency parasitic current that is either conducted (electrostatic origin) or radiated (electromagnetic origin) by a device.