(English) UMS2 User Manual
Charging Current Settings
Please follow the steps below for charging current settings:
1. After the battery is inserted and the charging process begins, short press the C button to select the correct slot
and long press the C button to enter Charging Setting Mode.
2. After entering Charging Setting Mode, the screen will show the flashing text “CHG. STATUS”. Short press the V
button to increase the charging current with a 100mA increment each time. Long press the V button to directly
access the maximum setting.
3. When the setting is finalized, long press the C button to save and exit the Charging Setting Mode.
Note:
When the input power is insufficient and a large charging current is set, the charger will automatically adopt the
intelligent current distribution according to the input power.
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If the charging currents of both slots are set to the same, Slot 1 will be given priority to meet the current settings
over Slot 2. When Slot 1 enters the CV mode with lowered current, Slot 2 will automatically adjust its charging
current to achieve the maximum power.
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If the charging currents of both slots are set differently, the slot set with a larger charging current will be given
priority over the other to achieve the maximum power.
QC Charging Mode
The UMS2 is QC 2.0 input available. When the charger is powered by a QC supportive device or connected to a QC
adapter, the screen will show “Quick Charge” and the single slot max output will achieve 3,000mA.
Automatic Battery Internal Resistance Detection
When the UMS2 is on and the battery is installed, it will automatically detect and display the Internal Resistance
below the “CHG. STATUS”. When the Internal Resistance is below 250mΩ, it will show “Good” on the screen. When it
is above 250mΩ, it will show “Poor” on the screen to indicate that the battery should be replaced.
Charged Volume Calculation
During the charging process, the system will automatically calculate and display the Charged Volume below the “CHG.
STATUS”.
Anti-short Circuiting and Reverse Polarity Protection
If there are batteries inserted with polar reversed or short-circuited, the screen will flash to show “EE EE”.
Energy Saving Function
If there is no action to the buttons or batteries in 10 minutes, the screen will automatically go dim to save energy.
Perform any action to light up the screen.
Over-Discharged Li-ion Battery Activation
The UMS2 is capable of activating over-discharged Li-ion batteries with a protective circuit. After battery installation,
UMS2 will test and activate the battery before charging. When a battery is detected as damaged, the screen will show
“EE EE”.
Over-Discharged IMR Battery Restoration
When an over-discharged IMR battery is inserted, the screen will show “EE EE”. In this case, long press the V button
to enter Restoration Mode. After that, the charging process will continue. The battery should be replaced if it fails to
be restored after several attempts.
NOTE:
When attempting to restore an IMR battery, reverse polarity protection is temporarily disabled. Please ensure
batteries are correctly inserted. Failing to do so may result in fire or explosion.
Overtime Charging Protection
The UMS2 will separately calculate the charging time of each battery. When the charging time exceeds 20 hours
in one slot, it will automatically cease the charging process of this slot and display a fully charged status. This is to
prevent possible overheat or even explosion due to battery quality issue.
Precautions
1. The charger is restricted to charging Li-ion, IMR, LiFePO4, Ni-MH/Ni-Cd rechargeable batteries only. DO NOT use
the charger with other types of batteries as this could result in battery explosion, cracking or leaking, causing
property damage and/or personal injury.
2. Moderate heat from this product is to be expected during the charging process, which is normal.
3. Ambient Temperature of Usage: -10~40℃ (14~104℉); Temperature of Storage: -20~60℃ (-4~140℉)
