J728 how often do you replace the backup battery

As the title says.. how often do you do it? It seems to me that it has to be done way too often and if you don't keep your main battery charged all the time, you loose everything that was in RAM...

SainT

I've had my 728 for several years and have never replaced the backup battery. As long as you keep the main battery charged, the backup battery should last many years!

Edited by Hurricane John 2009-08-07 10:21 AM