SMART CHARGER JVL-305
Thank you for buying the smart battery charger JVL-305. Please read the following information before you start to use it.
PACKAGE CONTENTS
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Charger
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Power adapter
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Operation manual
GENERAL INFORMATION
The two-channel charger with a built-in intelligent microprocessor allows charging two batteries at once.
An option to manually set two different charging currents (500mA or 1000mA) according to the actual battery status.
A possibility of charging compatible 3.7V Li-Ion batteries.
The discharging mode which allows testing the battery capacity.
Displays at each slot show information about charging / discharging current (mA), voltage (V), capacity (mAh), elapsed time of
charge / discharge (h) and internal resistance (mR) of battery.
The charger can be used as a substitute of external battery (power bank) for charging mobile devices.
A pulsating current ensures fast charging while extending the life of charged batteries.
The charger is able to detect defective batteries and has safety features as overheat protection, short circuit protection, reverse
polarity protection, overcharging protection.
CHARGING MODE
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Insert a battery into the charger and then plug the charger by using the power adapter into an electric outlet.
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The display will light up and the charger will automatically perform a short internal resistance test of battery. If the battery has
been inserted into the opposite pole of charger, the battery is non-rechargeable or it’s damaged,
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the sign „null“ will appear on the display. If the battery is functional, the charger will be automatically set up to the charging mode
with the charging current of 500mA. The sign „Charge“ will appear at the bottom of display and charging will begin after 8
seconds. If you want to change the charging current to 1000mA press shortly the button MODE immediately after the preset
current of 500mA appears on the display. Information about the selected charging current of 1000mA will appear on the display
and charging will automatically start after 8 seconds.
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Information about the actual capacity (mAh) which was added into the battery, elapsed time of charging (h) and internal
resistance (mR) of battery can be shown on the display by shortly pressing the button MODE, whenever during the period of
charging mode.
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When the battery is fully charged signs „Full“ and „Charge End“ will appear on the display.
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If you want to change the running mode, press the button MODE for 3 seconds and then shortly press the button MODE again
to set a desired mode.
DISCHARGING MODE
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The discharging mode of charger is intended to test batteries and it has three stages.
1) The battery is automatically fully charged by using one of selected charging currents (500mA / 1000mA).
2) Then the battery is automatically fully discharged by the discharging current 500mA to measure the battery capacity.
3) In the last stage the battery is fully charged in order being ready for using.
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Insert a battery into the charger and then plug the charger by using the power adapter into an electric outlet.
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The display will light up and the charger will automatically perform a short test of internal resistance of battery. If the battery has
been inserted into the opposite pole of charger, the battery is non-rechargeable or it’s damaged
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the sign „null“ will appear on the display.
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If the battery is functional the charger will be automatically set up to the charging mode with the charging current of 500mA.
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To select the discharging mode press the button MODE for 3 seconds immediately after the preset current 500mA appears on
the display and wait until a sign „DisCharge“ appears at the bottom of display.
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Press shortly the button MODE again to adjust the charging current (500mA or 1000mA) for the first phase of the discharging
mode. The selected charging current (mA) will appear on the display and the first phase of discharging mode will begin
automatically after 8 seconds.
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When the battery is fully charged the charger will automatically discharge the battery by using the discharging current of
500mA.
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Information about the actual capacity (mAh) which was extracted from the battery, elapsed time of charging (h) and internal
resistance (mR) of battery can be shown on the display by shortly pressing the button MODE whenever during the period of
discharging mode.
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When the battery is fully discharged the sign „Discharge End“ as well as the measured value of battery capacity
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will appear on the display.
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After that the battery will be automatically charged by using the charging current which has been set up at the beginning of
discharging mode.
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If you want to change the running mode, press the button MODE for 3 seconds and then shortly press the button MODE again
to set a desired mode.
INTEGRATED USB PORT
If you put into the charger compatible Li-Ion batteries then the charger can be used as a substitute of external battery (power bank)
for charging various mobile devices.
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