The batteries ability to report the ‘fuel gauge’ is associated with the reconditioning process. A battery that is not reconditioned every 4-6 weeks will not report its charge status to the radio though it will still report a low battery alarm when it reaches 10% of capacity. It is very important to note that the 12-volt “Pocket” charger installed in vehicles do not perform the recondition function so batteries that live in these chargers are more susceptible to this condition. A fully charged battery from a vehicle charger might need to be forced to be reconditioned in a desktop charger by re-inserting the battery within 2 seconds of removal.