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A: Generally, a 12V battery with a voltage lower than
8.5V is damaged and cannot be charged normally. If
the battery is damaged or Er4 error is reported, you
can select the 12V Supply mode to recover battery
charging.
Q: Why does battery voltage drop to about 13V after it is
charged to above 14V (or when charging stops)?
A: The voltage of a fully-charged 12V lead-acid battery
is between 12.8V and 13.4V. For effective charging,
the battery voltage will reach between 14V and 14.4V
during charging time. Therefore, battery voltage will
drop to about 12.8V to 13.4V when charging stops (or
when charging enters Step 9).
After the battery is fully charged, the charger will
resume charging with a small current if the battery
voltage is detected to drop to 12.8V. You can also
change the resume charging voltage of Lead-acid
Battery mode in Step 9 of the Expert Mode.
Q: The TB6000Pro Bluetooth cannot be found or
connected?
A: Check if the Bluetooth icon
flashes.
If it flashes, turn on Location Services and Bluetooth
on your phone (which is necessary for getting the
available Bluetooth devices). Then open the app and
tap the Bluetooth icon to establish connection.
If it remains still, the charger has been connected to
another device.
on the charger screen
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