| Newbie question--
02 M5--need to park it outside--I have a 97 Aspen Silver 6spd also--(two E39s)--must leave 97 in garage---so question--what is the impact on battery life or anything else if you leave alarm on 8-9 hours/night every night--eg--change battery every 6 months?--or what else?--does anyone know what the alarm was designed for?--was it occasional use while parking for work or dinners etc--or all night use OK? | 
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