Autel Maxivideo MV400 - Manual (Page 15)

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4.3 Charger Inspection
Before using, inspect the charger and correct any problems. Set
up charger according to these procedures to reduce the risk of
injury from electric shock, fire and other causes and prevent tool
damage.
1. Make sure charger is unplugged. Inspect the power cord and
charger for damage or modifications, or broken, worn, missing,
misaligned or binding parts. If any problems are found, do not use
the charger until the parts have been repaired or replaced.
2. Clean any oil, grease or dirt from the tool especially on the
buttons. This helps prevent the tool from slipping from your
hands and allows proper ventilation.
3. Inspect if the warning label on charger’s surface is intact and
readable.
4. Select appropriate location for charger before using. Check work
area for:
 The charger must be between 41°F (5°C) and 113°F
(45°C) for charging. If the temperature of either is outside of
this range at any point during charging, the operation will be
suspended until brought back to the correct temperature range.
 Inspect that the plug fits correctly into the desired outlet.
 The charger needs a clearance of at least 4" (10 cm) on all
sides to maintain a proper operating temperature.
4.4 Battery Charging Procedures
The tool has a 3.7V built-in lithium-ion rechargeable battery. When
the battery is too low, the Battery Capacity Icon will blink 25 times
and the tool will shut down automatically.
There are two means of charging battery:
1) To charge battery by charger: Locate the DC power
source port of the tool. With dry hands, connect the tool to the
mains with charger to start charging.
2) To charge battery by USB cable: Locate the USB port of the
tool. With dry hands, connect the tool to a PC with USB cable