Microsecond - 1,000,000th of a second (mS).
Ambient Temperature - The average temperature of the surroundings.
Filter (phase-shift) - Filter used to reduce, if necessary, the overall distortion due to the current harmonics injected into the mains upstream of a UPS by its rectifier-charger. Filtering is superior to that of a traditional filter of the L or C type.
Top-Up Charge - A low rate charge following the main charge, designed to ensure maximum capacity.
Energy - The output capability of a cell or battery, usually expressed in watt-hours.
Depth of Discharge - The ratio of the quantity of electricity (usually in ampere-hours) removed from a battery to its rated capacity.
Bobbin - A cylindrical cell design utilizing an internal cylindrical electrode, and an external electrode arranged as a sleeve inside the cell container.
