Got my new 1088 3 weeks ago and it has never given me a battery low alert it just shuts down but no alert. According to the owners manual this a default feature. My current firmware is 4.6. Got this scanner from Universal Radio, called them and they checked two of their 1088s and said they also did not get a battery low alert. I have used rechargeable and alkaline still no alert. If anyone can advise will greatly appreciate.