Current Density - The current per unit active area of the surface of an electrode.
Wall-less Design - A battery design where the structural support for the cells is formed by an open plastic framework.
Top-Up Charge - A low rate charge following the main charge, designed to ensure maximum capacity.
Circuit breaker (battery) - DC circuit breaker that protects the battery of a UPS.(back)
Constant Resistance Discharge - A battery discharge regime whereby the resistance of the equipment load remains constant throughout discharge.
PWM (Pulse Width Modulation) - Inverter high-frequency chopping technique using a means of regulation enabling rapid modification of pulse widths over a single period, thus making it possible to maintain the inverter output within tolerances even for non-linear loads.
Specific Energy - The ratio of the energy output of a cell or battery to its weight (Wh/kg). This term is used interchangeably with gravimetric energy density.