Vuzix M100 Product Guide - Manual (Page 11)

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3. Hardware Setup
Before Using the M100
The M100 Smart Glasses and the PowerPak 3800 should be fully charged before being
used for the first time.
Charging
The M100 Smart Glasses are equipped with an internal rechargeable battery. In
respect of weight considerations, a battery suitable for the most common tasks and
needs has been provided. Certain activities may place additional power demands on
the M100, reducing its internal battery charge. An external battery, the PowerPak
3800 or a similar battery, can be used to extend the M100’s running time.
The M100 Smart Glasses and the PowerPak 3800 can be charged from any USB power
source providing a minimum of 500mA. Recharge time can be dramatically reduced
by utilizing a 1000mA or greater power source.
 Connect the USB cable to a USB power adapter or USB port on a
computer and then plug the smaller USB connector into the micro-
USB port on the M100 or PowerPak 3800.
The white Power Indicator light on the M100 will flash while the device is charging
and remain lit when fully charged. The light will blink intermittently while charging
and blink rapidly 3 times when the device is at a power level that is too low for the
M100 to turn on.
If the M100 Smart Glasses are connected to a power source, but very low on charge,
the Power Indicator will flash three times every five seconds until a charge sufficient
for booting up has been achieved. It will continue to flash every two seconds while
charging.
Note: While the Power Indicator is flashing three times, the
M100 has insufficient charge to turn on.