Aux battery info.

Hello.
I own a 2005 prius and just installed my third 12v battery.
That is approx. a life of 5yrs per battery, is this normal for a prius.
The car is driven to work every day and once on the highway for approx. 45 min's each week.
The last battery was bought from toyota and lasted 3 yrs, exactly.
When i put the new battery in, i measured the d.c. current with the hatch light off, smart key off, it measured 147ma, is this normal.

One other question, when i changed the battery i found approx. 1.5 inches of frozen water below the battery tray.
Has anyone else had water in this area.
I think it is leaking in, maybe from the h.v battery fan duct, bottom of car, right taillight when i wash the car.
One other question, my illumination lights for the buttons around the lcd display ittermittently flash on and off, these i remember are: display, audio, climate, etc, 4 in total.

Any thoughts would be appreciated.

Thanks.

 

Thank you Chapman for the info, when it is warmer outside i will check the panel.
Thank again.