Race Energy BCM21 Installation & User Manual - page 20
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Equalize – A deliberate overcharge at low current to bring a weak cell up to the
same charge level as the good cells in a weak battery. Typically only performed once
every few months, and only if battery exhibits reduced capacity.
Float – The second and final Constant Voltage stage in a 3 stage charging algorithm,
or the only Constant Voltage stage in a 2 stage algorithm where the battery is held
at safe voltage indefinitely.
Amp-Hour Capacity – The energy capacity of a battery expressed in the number of
hours the battery can last a specific output current. For example, 100 Amp-Hours
means that a battery can supply 100 amps for 1 hour, or 10 amps for 10 hours, etc.
C/20 Rate – The number of amps that a battery can supply for 20 hours. For
example a 100 amp hour battery should be able to supply 5 amps continuously for
20 hours. Battery capacity varies with the discharge rate. The higher the discharge
rate, the lower the capacity of the battery.
Deep Discharge Battery – a battery designed to have a lower maximum current
capability, but can be repeatedly deeply discharged without damaging it or seriously
affecting its lifespan.
Engine Starting Battery – a battery designed to produce a very high amperage for
engine starting, but typically does not tolerate repeated deep discharging.