If the FR-26 is being charged with the adaptor directly on the PMR (insert plug on the right side), a battery icon with increasing capacity animation will become visible. 

When the batteries are empty, an empty battery icon will appear, which means that the battery is almost empty. 

As the current is higher when transmitting, the icon will appear sooner. 

When idle the icon will appear slightly later. 

The charger does not indicate whether the battery is full. 

It can therefore be assumed that the batteries are full after 14 hours. 

This is based on the charging current and the capacity of the batteries.

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