Congratulations, you actually got me stomped on this one. After checking with our IMPRES engineers in Schaumburg, the short answer is “YES” you are correct.

Now for the long and technical answer.

First the disclaimer, the following scenario does not apply if you press the PTT button on the radio at any given time. This brings into play other variables.

Second, some facts you need to be aware of.

#1 The IMPRES system will check the status of a battery every five minutes after a complete charge.

#2 For The Motorola Professional Series Radios, the system will charge at a rate of 1250ma per hour.

#3 For the Motorola XTS Series, the system will charge at a rate of 1500ma per hour.

OK, now that the facts and disclaimer are out of the way.

Let say that at 3:00pm your XTS Radio which is turned on is now fully charged and still in the IMPRES charger. 30 seconds after 3:00pm it starts to monitor an extremely long conversation that last for a full 4 minutes and 59 seconds. The IMPRES charger than checks the battery at 3:05 and will determine if the battery needs an extra boost to bring it up to full capacitances.

However if you where to remove your radio just before the 5 minute window and you’ve been monitoring an extremely long conversation, the battery would not be 100% fully charged.

I hope this answers your question.
Many Thanks - Very Good question.