Yes, you can, that's what the charger is for. You can also use it to charge a 12 V car battery, but it will take about four times as long as with a charger that delivers 15 A.
I bought one of these some time ago.
As far as I know, the setting remains the same. I have only used it for 12V batteries and don't remember having to reset the volts.
The instructions (see internet) say the following:
Note on automatic charging
The charger is a microprocessor-controlled automatic charger, i.e. it is particularly suitable for charging
for charging maintenance-free batteries and
for long-term charging and for maintaining the charge of
batteries that are not in constant use, e.g. for vintage cars, leisure vehicles, tractor lawn mowers and the like. Due to the
integrated microprocessor, charging takes place in
several stages. The last charging stage, the trickle charge, keeps the battery capacity at 95 -
100 % and therefore the battery is always fully charged.
The charging process does not need to be monitored.
However, do not leave the battery unattended when charging over a longer period of time,
so that you can disconnect the charger from the
disconnect the charger from the mains supply manually in the event of a fault.
5.1 Explanation of the symbols (Fig. 2)
A Charging a 6V battery (lead-acid battery,
AGM battery and GEL battery)
B Charging a 12V battery (lead-acid battery,
AGM battery and GEL battery)
C Error LED - terminals incorrectly connected
(reverse polarity), short circuit, for 6V battery
Charge voltage selection incorrect, battery
defective.
5.2 Charging settings (Fig. 2)
Connect the charger to the socket
(observe technical data). All 3 LEDs
flash briefly. The 12V LED then flashes
flashes quickly. By pressing the Mode button (Pos.
1), the charging voltage can be set according to the
existing battery voltage (6V or 12V).
can be set. Depending on the selection, the
6V or 12V LED flashes quickly. During charging
the corresponding LED flashes slowly.
5.3 Charging the battery:
- Loosen or remove the battery plugs (if present) from the battery.
- Check the acid level of your battery.
If necessary, fill with distilled water
(if possible). Caution! Battery acid is
corrosive. Rinse acid splashes immediately with plenty of water
thoroughly, consult a doctor if necessary.
- First connect the red charging cable
to the positive terminal of the battery.
- Then connect the black charging cable
away from the battery and the petrol line
to the bodywork. Depending on the
set battery voltage, the 6V or 12V LED flashes
or 12V LED flashes slowly.
5.4 Fault LED (fig. 2 / item C)
The error LED flashes (lights up) in the following cases
cases:
- If you select the wrong charging voltage (12V) for a 6V battery
selected the wrong charging voltage (12V).
The device fully charges the 6V battery and
then automatically recognises the incorrect
incorrectly selected charging voltage.
- If the battery voltage is less than 3.5 V
or greater than 15 V. The battery is not suitable for
suitable for charging or defective. Other
battery faults can also mean that the battery
battery cannot be charged.
The device is far too weak for this, it should have much more amperes. It is only suitable for charging small 12 volt batteries. To "bypass" a car battery, i.e. to start a car engine with a discharged battery, you need a charged second starter battery that can supply the starter current of at least 60 amperes immediately or a device with the corresponding power.
In general, it is not intended for charging cars, but rather seasonal/recreational vehicles or motorcycles/quads, as it is designed for the 3-32 Ah 6-12V batteries used in these types of vehicles, as well as for the gel, AGM, low-maintenance and lead-acid batteries found in various appliances.It is designed for the 3-32 Ah 6-12V batteries used in these types of vehicles, as well as for gel, AGM, maintenance-free and low-maintenance lead-acid batteries found in various appliances.
The maximum A charging current is what the charger can charge per hour. A normal car battery has from 50 to 80 Ah. This means you can divide the Ah of the battery with the max charging capacity and you obtain the hours you need to fully charge the battery. Low charging capacity means more hour to charge.