Can you disconnect a e53 battery for storage???

[blaubenz]

Dead battery again 2005 X5. I think the last time it was on the charge was Thanks Giving (maybe before that). Battery reads 1.6V it is really dead.



So question 1. If you are storing an X5 is there a problem disconnecting the battery indefinitely. If so like what?



Question 2 If I could disconnect the battery indefinitely. Given the battery is completely dead. Is there something I need to do or check before disconnecting the battery??? Like at least start the car, run the engine??? I hear there may be an issue air suspension???