Temperature Protection - Forch F-Smart 12/24 V 25 A Bedienungsanleitung

BOOST flashes). In the event of severe discharge/sulphur formation, the device attempts
to charge the battery for a maximum of 4 hours at a higher voltage of maximum 17 V and
a current of 1.5 A (the LED lights up continuously). As soon as the battery is able to charge
normally again, the device starts charging and the LED flashes. In the case of deeply dis-
charged batteries, the device uses this higher voltage in an attempt to restore the function
of the battery. This function is not available for 24 V batteries.
Pulse charging
When a battery is connected, the charging device automatically detects the voltage and
■
starts pulse charging to preserve it. Pulse charging occurs at voltages between 4.5 – 16.5 V
(± 0.5 V) for 12 V batteries and between 10.5 and 21 V for 24 V batteries.
Malfunctions
The charging device detects malfunctions such as short circuits, incorrectly connected
■
clamps (except for 13.6 V / SUPPLY), primary charging for more than 41 hours, a battery
voltage lower than 4.5 V on 12 V batteries or 15 V on 24 V batteries. In such cases, the
charging device automatically switches to standby ( ) to prevent any damage.
If the polarity of the clamps is incorrect, the warning symbol

Temperature protection

If the charging device becomes too hot while charging, it will automatically reduce the
■
power to prevent any damage from occurring.
Typical primary charging times
Battery capacity in Ah approx.
14
60
100
120
225
80 % of charge in hours
12 V 24 V
2.5 4.9
7.5 15
12 24
15 30
29
also lights up.