Victron energy BMV 600 Manuel page 17

2.5.2 Setup parameter detail
Cb: Battery capacity Ah. The battery capacity for a 20h discharge
rate at 20° C.
Vc: Charged voltage. The battery voltage must be above this voltage
level to consider the battery as fully charged. Make sure the
voltage-charged-parameter is always slightly below the voltage at
which the charger finishes charging the battery (usually 0.1V or
0.2V below the 'float' stage voltage of the charger).
It: Tail current. When the charge current value is below this
percentage of the battery capacity (Cb), the battery can be
considered as fully charged. Make sure this is always greater than
the minimum current at which the charger maintains the battery, or
stops charging.
Tcd: Charged detection time. This is the time the charged-parameters
(It and Vc) must be met, in order for the battery to be considered
fully charged.
Charge Efficiency Factor. When a battery is being charged, energy
CEF:
is lost. The Charge Efficiency Factor compensates for the lost
energy, where 100% is no loss.
PC: Peukert exponent (see chapter 0). When unknown it is
recommended to keep this value at 1.25. A value of 1.00 disables
the Peukert compensation. Contact your battery manufacturer for
the correct Peukert exponent for your battery.
Ith: Current threshold. When the current measured falls below this
value it will be considered as zero Amps. With this function it is
possible to cancel out very small currents that can negatively affect
long term state-of-charge readout in noisy environments. For
example if an actual long term current is +0.05A and due to injected
noise or small offsets the battery monitor measures –0.05A, in the
long term the BMV can incorrectly indicate that the battery needs
recharging. When in this case Ith is set to 0.1, the BMV calculates
with 0.0A so that errors are eliminated. A value of 0.0 disables this
function.
Tdt: Average time-to-go. Specifies the time window (in minutes) that the
moving averaging filter works with. Selecting the right time depends
on your installation. A value of 0 disables the filter and gives you
instantaneous (real-time) readout; however the displayed values
may fluctuate heavily. Selecting the highest time (12 minutes)
ensures that long term load fluctuations are included in the time-to-
go calculations.
DF: Discharge floor. When the state-of-charge percentage has fallen
below this value, the alarm relay will be activated. The time-to-go
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