Disconnection Of Charging Process - probst VAKUUM-POWER-HANDY VPH Instructions D'emploi

7. diScoNNectioN oF chArGiNG proceSS

The charger is provided with an automatic switch-off control that ends the
charging process automatically once the charging end voltage is reached and
switches automatically to the conservation-charging mode. The yellow charging
display switches off in the conservation-charging mode or if the charge current
falls under 80mA.
The device is characterised by the following properties:
– short-circuit and reverse-polarity protection
– Constant charging end voltage
– No charging if battery is connected with reverse-polarity
– Charging is only carried out if the battery is connected correctly
– Visual display, for net, charging and reverse-polarity
As opposed to common chargers, the charge current of this automatic charger
does not represent a precise value and depends on various factors. This includes
e.g. the charge condition of the battery, the battery age, type or capacity. In
addition, it is important how much the battery was discharged before. If the batt-
ery was extracted a lot of current, a high initial charge current will take place at
the beginning (max. 0,8 A) that will diminish after a short time. This means with in-
crea sing voltage of the battery, the charge current decreases. The charging time,
until the charging end voltage is reached, depends on several parameters, e.g.
– the capacity (Ah, the bigger the longer the charging time)
– the battery type
– the charging condition of the battery (full, partly charged, flat),
– the ambience temperature
– the general condition (age) of the battery.
The charging time is based on the above parameters and can roughly be
calculated according to the following formula (for a rough time estimation):
Capacity of the battery in Ah
Charging time (in hours [h]) = x 1,4
Charge current 0,8 A
Example: Lead-gel-battery 12 Ah, flat
12 Ah
x 1,4 = the charging time amounts to approx. 21 h
0,8 A
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Automatic Charger AL800