Battery Charging & Power Management - Sigma Metalytics Precious Metal Verifier Quick Start Manual

Battery Charging
The PMV contains a rechargeable lithium-ion battery. The battery is
high-capacity and the devices uses a battery management system to
protect the health of the battery and the device.
When the battery is low, the green LED next to the POWER button will blink
slowly.
To charge the unit, connect the included USB cable to the USB port on the
side of the PMV (see Device Diagram). The device can also be charged
by plugging the USB cable directly into a computer.
The PMV will still charge when powered off. Whether the PMV is off, the LED
will not illuminate while charging. When the PMV is on, the LED will blink
and stop blinking when it is fully charged.
If the PMV has not been used for a while, it can take up to 12 hours to fully
charge the battery. If the device has been unused for a long period of
time, plug it in and charge it overnight before using it.
The charger connector may not appear to be fully "seated" or sit flush
with the device. This is normal. As long as a firm connection is made,
the device will charge. Do not over-press the charger port, as this may
cause damage to the internal circuitry.
Power Management
The PMV has built-in features to improve battery life and protect the
health of the device.
The device's display will dim after one minute of no use. Placing a coin on
the sensor or pushing any button will restore the backlight.
The device will automatically turn off after five minutes of no use. Power
on the device like normal to get back to testing.
When the device powers on, it will check the battery's charge level. If the
charge level is below a certain percent, the battery management system
will turn the device off to protect the microprocessor. If this happens, plug
the device in to charge for at least 6 hours.
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