I received my 496 in February. My unit would sometimes charge, but for the most part, would not fully charge. I contacted Garmin and they said it is an apparent software problem. The unit is not reading the correct amount of power available on the battery. Jason in Support said that a software update would hopefully be available by late summer.
I am using their software version 3.50, if that makes a diff.
They did send me a replacement battery.
Gary Baker
VAF #737
RV-6 Fuse
Medina, OH
Last edited by Gary Baker : 06-21-2008 at 05:51 PM.
Reason: Added ver #
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