11. TROUBLESHOOTING
76
The charging lamp of
the internal battery
BT-53Q is blinking
slowly when
connected to the DC-
12V external battery.
(Error blinking)
1) The charging temperature is out of
range.
2) The battery BT-53Q is completely
discharged.
1) Recharging should take place in
the temperature range of 10 to
35
°C (50 to 95°F).
2) Continue the charging for 30
minutes.
• If the lamp changes to red light
up mode, the battery is normal.
• If the lamp continues green
blinking, battery is faulty and
must be replaced. Always
properly dispose old battery.
Conditions Causes Countermeasures
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