Introduction
The DC120833 is programmed for an automatic four stage (Ud-I-Uo-Up) charging
process. It is designed for 12V, 2 to 60Ah sealed lead-acid batteries. It is also ideal for
keeping all other lead acid battery types “topped up” and maintained. Stage “Ud” is for
assisting with de-sulfating the battery through a pulse charge process. When battery is
sufficiently recovered, stage “I” will give bulk current charging (0.8A or 3.3A, defined by
user). Then, “Uo” stage follows where the current is reduced and the output voltage is
regulated to 14.4V (14.7V is for low temperature selection (Snow symbol)). When the
current is [automatically] reduced to 0.4A, stage ”Up” begins. At the completion of this
stage, the battery is charged completely and the charge cycle is finished. The charger
will enter pulse charge mode again when the battery voltage drops below 12.90V, thus
maintaining the battery as fully charged.
For 2 to 12Ah battery, select 0.8A (Motorcycle symbol) and for 12 to 60Ah battery, select
3.3A (Car symbol).The (Snow symbol) mode is also suitable for batteries requiring 14.7V
Top of Charge voltage (TOC).
Specification
Input Voltage
100-240VAC, 50-60Hz
Input Current
1.1A
Back current drain
1.3mA (current used from battery when not connected to power)
Charge voltage
Rating 12V, Bulk 14.4V/14.7V (14.7V for low temperature)
Charge current
0.8A (2~12Ah, Motorcycle) 3.3A (12~60Ah, Car)
Operating Temp
-20C to 50C
Cooling
Natural convection. Do not cover the charger.
Charge principle
Automatic 4 stages. Ud-I-Uo-Up
Battery type
12V sealed lead-acid batteries. AGM, Gel, VRLA, SLA.
Battery capacity
2~60Ah
Maintenance
All 12V lead acid battery types
Maintenance Volts
Charger restarts when battery voltage drops below 12.90V
Charger will not overcharge “sealed” lead acid batteries. Although this charger can be used on “wet”
batteries and is in fact ideal for maintaining them, it is not suitable for Calcium types when discharged.
How to use:
1.
Connect positive clip (red) to positive battery terminal, the black clip to negative.
2.
Connect the AC cord to the power outlet. The red alarm indication light will
indicate a battery which is connected in reverse polarity.
3.
Pressing the “MODE” (MD) button and stepping forward one press at a time until
the required mode is reached.
4.
When the “charging finished” led lights up, the battery is fully charged. Leave the
battery connected for maintenance charging.
5.
When disconnecting charger, disconnect in reverse sequence from connecting.
The table shows the duration of Bulk step-up to about 80% state of charge.
Battery type
（
Ah
）
MODE
Time
（
hours
）
2
2-3
12
10-12
14
3-4
50
12-14
60
18-20
Mode
select
button
Errors!
(reversed
connection)
De-sulfating
process
Charging
process
Charging finished.
Pulse maintenance
Power
on
2~12Ah
battery
setting
12~60Ah
battery
setting
Low temperature
setting.
Also used for 14.7V
TOC.