stewmills wrote on 08/07/14 at 07:38:27:I have a not too old (maybe a year or less) AGM battery that I accidentally drained last night due to leaving the key on....
I used to do that regularly, due to the kick stand shuts down the engine. Yuasa flooded battery, 2005-2008,
totally flat three times in three years. Got an Big Crank AGM. 4Q2009 having health problems I forgot to shut down the bike three times. Last was *not* wanting to take a cage I run the charger at the 10amp level, so I could ride after 90 minutes. Apr2010 Bypass/Stroke, no riding for over 2 months, without charging, but it was ready to go when I finally did. 3Q2012 kill the Savage, kept trying to get it running, over and over, battery working just fine. Battery was still able to spin the engine in Jan2013 when it went to it's new owner.
Bottom line -- You didn't kill the battery.