Hello everybody. I bought a Spark SD6-500CW few years back and used for about a year. Then I realised I prefer a little more throw so I bought a Spark ST6-500CW, then kept my SD6 aside and only took it out today which is about a year plus later. The battery was not remove during the long period of storage (my bad:hairpull. So today when i try to light it up, it doesn't work anymore. I tried a few fully charged battery but still nothing... Is there sometimes I can try to do to save it or is it RIP?