20-05-12, 09:38 PM
Hmm. The Datatool user guide suggests that it draws less than 2.5 milli Amps and the battery is 12 Amp hours so to flatten a healthy battery it should take months. Thing is, I have other bikes which I ride during winter and it's the cold weather that knocks seven colours out of batteries which is why I keep killing them. Two weeks and it needs charging. Three and it'll really be on the way out. I suspect in summer, it'd take a lot longer to drain a battery, though.
With Datatools, there is a service mode which allows you to disconnect the battery, but I can't see anything in the manual which says whether it's a good idea to leave it in service mode for weeks, and of course it ain't doing the job of protecting your bike in service mode. Datatool say that their alarms should only be used with Optimates for trickle charge, but who knows.