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Garmin GLO Will Not Charge
The battery in your GLO™ receiver can only be charged when the unit is on. If the GLO is turned off, the unit will not charge at all. It is recommended to charge the unit near a window where it may acquire satellites and allow the battery to fully charge. Once completely charged, the GLO can last up to 12 hours.
NOTE: The GLO will continue to search for satellites while charging which will cause the battery to drain at the same time. If the GLO is in a position where it cannot acquire satellites, the battery may take substantially longer to fully charge.