Operation
I. Charging Function
Connecting power supply and inserting batteries, it will start charging automatically.
II. 0V Activation Function
When batteries are inserted, they will be detected and activated automatically. Batteries that are unable to be activated will be identified as broken batteries, and the display will show “Err”.
III. Button Functions
“Mode” and “Curr.” buttons on the left control the slots of CH1 to CH4. “Disp.” and “Curr.” buttons on the right control the slots of CH5 to CH8. The slots of CH1 to CH8 support battery charging. Meanwhile, the slots of CH1 to CH4 have two more advanced functions, grading function and storing function.
* The charger can test the battery’s real capacity by its grading function, so users can know whether the battery capacity is overstated or not. And when there are some batteries that not used for a long time, the user can use VC8’s storing function to charge/discharge the batteries to their rated voltage, so as to maximize batteries’ lifespan.
1. CH1-CH8
In charging mode,
◆ Press “Mode”/“Disp.” button to switch the display of Cur(current), Cap(capacity), and IR(internal resistance).
◆ Press “Curr.” button to switch charging current, 3A/2A/1A/0.5A/0.25A. (It’s a cycle switching, which means that the charging current will return to the initial one after a circle.)
2. CH1-CH4
Long press “Mode” button to switch modes among charging mode, grading mode(“Grad.”) and storing mode(“Store”).
IV. LCD Display
1. In charging mode,
If it shows “CAP”, after the battery is fully charged, the screen will show “FULL” and capacity recurrently.
If it shows “CUR”, after the battery is fully charged, the screen will show “FULL” and current recurrently.
If it shows “IR”, after the battery is fully charged, the screen will show “FULL” and battery’s internal resistance recurrently.
* When the battery is fully charged, the charger doesn't test its internal resistance, in case the battery being overcharged. Neither will the charger does when the adapter input current is less than 700mA.
2. In grading mode, the charger will charge the battery, after fully-charged the battery, it will discharge. And then, the charger will fully charge the battery again.
In the first charging period, the screen shows real-time charging current; when discharging, the screen shows an accumulatively discharged capacity( the discharging current is 300mA); in the second charging period, the screen shows real-time charging current and accumulatively discharged capacity recurrently. When it finished grading,
the screen will show “DONE” and graded capacity recurrently.
3. In storing mode, it will charge the batteries with voltage lower than 3.7V/1.2V and discharge the batteries with voltage above 3.7V/1.2V. When it finished storing, the screen shows “DONE” and 3.7V/1.2V.
* In storing mode, VC8 can be used to charge LiFePO4 batteries.
V. Turning on/off brightness
Without any operation in 1 minute, the screen will dim. Long press “Curr.” to turn off the backlight, and any operation to turn on
