PowerTech MB4102 Instruction Manual page 10

Extended Battery Charging
Up to one extended battery can be connected to this product. Only use the
supplied cable to connect the power station and the extended battery, the device
will start to charge when a reading appears on the input power on the screen.
NOTE: Please make sure that both the product and the power pack are turned
off Before connecting the extended battery to this product.
NOTE: After this product is connected to the extended battery, make sure that
the LCD display of this product shows the input power, before turning on.
WARNING: Do not directly connect or remove the power pack during the
charging and discharging process. If you need to connect or remove the power
pack when using, please turn off the power before operating.
WARNING: Do not use your hands or other objects to touch the metal terminals
at the connection port of the power pack. If there are foreign objects attached
to the metal terminals, please lightly wipe with a dry cloth.
WARNING: The device only allows to plug in and unplug the battery pack in the
shutdown status:with the device on, to plug or unplug battery packs will trigger
the overcurrent protection. If damage under this situation,no warranty allowed.
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