
18
FEATURES
1. Product Introduction
PSD004 is a smart charger based on PWM high frequency technology, featuring high effi-
ciency, low loss, small size, light weight and LCD display. It is the best choice for charging
in the car, home and industrial areas and has the following features:
• Identify 6V/12V batteries automatically.
• Adopt 4-stage smart charging principle: soft start bulk charging
adsorption charging float charging.
• Four charging modes are available: 6V/1A (slow), 12V/1A (slow), 12V/4A (fast),
12V/4A (low temperature).
• LCD display: analogue graph, figure & character display, ensuring more intuitive, clear
and simplified operation.
• Wrong battery prompt, reverse polarity prompt, over temperature protection, power-
down memory and short circuit protection.
• Separate button is available to select charging mode.
2. Symbols on LCD Display
3. Charging Features and Electrical Parameters
This product provides a 4-stage charging mode: soft start, bulk charging, adsorption
charging, and float charging, and the features are as follows:
• Soft start: identifies the battery voltage before charging; if the battery voltage is lower
than the reference voltage, the battery will be pre-charged in order to avoid damage
to the battery.
• Bulk charging: the main charging phase; the battery will be charged with the maximum
current, 70-85% of the electricity is charged in this stage.
• Adsorption charging: in this phase, the battery voltage will be higher and higher, and
the current will be smaller and smaller; when the charging current drops to 0.5A, the
adsorption charging ends, and then enters next stage. The adsorption charging stage is
the boost charge, and the battery is almost fully charged at the end of the stage.
• Float charging: maintains the maximum voltage of the battery by adding constant cur-
rent.
Fig. 1 LCD Diagram
b c f g h
a
d
ei
a: Reverse polarity
b: Wrong battery type
c: 12V battery
d: 6V battery
e: Analogue battery
f: Slow mode
g: Fast mode
h: LowTemp mode
i: Digit/character