I'd have thought a few hundred miles of driving would be enough to charge it up again?
I'm assuming BMKeys would need to have my car/key to supply a key? If so I don't fancy posting off my only key...
I did wonder about the GM5 unit.. Think i'll get a spare key first as I need one anyway (just in case), which will help work out if the GM5 is faulty. If it is i'll have to get that sorted next.