8.
Using
the
ToughPower
8.1
Time
Prediction
-
LCD
Screen
As described in the section
Charging Complete
, the
Time Prediction feature will be enabled after a FULL
charge of the battery has been completed. This is to ensure that the built-in charger is synchronized with
the
battery
state
and
can
start
keep
tracking
of
the
charge
in
and
out
of
the
battery.
For
Time Prediction
, the ToughPower uses built-in sensors to measure current (Amps) flowing in and out of
the ToughPower as well as a combination of software algorithms to compensate for the changes in
capacity of Lead-Acid type batteries when being used. The effects are described by Peukert’s Law, the
internal
algorithms
use
the
following
constants
for
each
type
of
battery:
Type
Peukert
constant
LEAD/GEL
1.30
CALCIUM
1.20
AGM
1.10
LITHIUM
LiFePO4
1.00
In addition, the Battery Condition influences the overall capacity as well. The following values are added to
the
Peukert
constant
to
improve
the
accuracy
of
the
calculations:
Condition
Add
NEW
0.00
USED
0.10
OLD
0.20
Note: In terms of
Time Prediction it is almost impossible to have 100% accuracy due to several external
variables impacting the result. Hence, time prediction calculations should be taken as a
reference only
.
Always
check
the
Battery
Voltage
and
use
that
as
a
reference
as
well.
The time remaining icon will change depending on the overall
Load on the system. When the ToughPower
is being discharged the time icon will show
Empty and whilst charging it will show
Full
, as shown in the
examples
below.
Note:
Time
prediction
is
updated
every
15
seconds.
Page
20
