Manual Absaar ATEK 4000 (page 12 of 32) (English, German, Dutch, French)

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ENG

3. Charging Features and Electrical Parameters

This product provides a 4-stage charging mode: pre-charge, constant current, constant voltage, and float charge, and

the features are as follows:

i) Pre-charge: identify 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.

ii) Constant current: the main charging phase; the battery will be charged with the maximum current, 70%~85%

of the electricity is charged in this stage

iii) Constant voltage: in the process of constant voltage charging, the battery voltage will be higher and higher,

and the current will be smaller and smaller; when the charging current drops to 0.5C, the constant voltage

charging ends, and then enters next stage; the constant voltage charging stage is the boost charge, and the

battery is almost fully charged at the end of the stage;

iv) Float charge: it is a maintenance charge, and allows for a longer time of safe charge. Through trickle charge,

the battery can be charged to nearly 100%. Too small current is insufficient to cover the self-discharge of the

battery, and too large current will lead to over-charge and dehydration. Long time charging with a small

current can eliminate the vulcanization of the negative electrode plate.

Fig. 3: Current & Voltage Charging Curves

1) Power-down memory function: in the charging process (constant current and follow-up stage), the product can

remember the current charging mode after power outage, and restores the original state when the grid resumes; the

maximum time is 12h with battery connection.

In power-down memory state, the Power LED is on, the LCD doesn’t display, and the backlight is off;

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Absaar ATEK 4000 Manual

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