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8.2 Battery Specifications
The portable GFM is supplied with an internal, rechargeable battery. The battery will
operate the GFM continuously for approximately 24 hours when fully charged. The
supplied plug-in the wall transformer will recharge the battery in approximately 8-10
hours. The GFM can be operated while charging the battery. The battery charge
status is displayed by the “CHRG” LED. When the LED is on the GFM is charging
the Battery or supplying power to the GFM. When the charge is complete the LED is
off. The LED will be on until the charge current drops below a C/10 rate or when the
float charge timer has expired (22.5 minutes).
8.3 Changing the Battery
1. To open the unit, remove the six screws on the back cover of the unit.
Carefully lift the cover off.
2. How to remove the battery:
• Disconnect the two circuit plug of the battery from J3 Battery Header on
the Power Board.
• Cut the two cable ties holding the battery to the Power Board.
LED
LED
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