Fast Charge
Typical fast charge time for a NiCd is 1 to 3 hours. The fast-charger detects the state of charge and switches to trickle charge when full-charge is reached.

Float
The use of batteries in which they are charged by an application to be ready for use if the primary power to the application fails. Also called standby or backup.

Float Charge
Similar to trickle charge. Compensates for the self-discharge on a SLA battery

Forced Discharge
Discharging a cell in a battery, by the other cells or an external power source, below zero volts into voltage reversal.

Fuse
Device used for cutting off an electrical current in the event of an abusive condition.