After reading GMAN'S experience we need to review some basic safety practices. Firefighter riders need to weigh in on this, especially the prevention guys. With dirt bikes going to electric start we are going to start using the battery tenders. I hate anything plugged in when I'm not there, but we have to make exceptions. The fire investigation will probably tell Gman what happened. If he plugged in the tender and came back 10-15 minutes to find the bike in flames its a safe bet the tender or hydrogen fumes from a sulphuric acid battery found a spark and ignited. The FI will know when he investigates. We have had 2 hydrogen explosions at work. The mechanic pulled the batteries out of the compartment for service. It was a dry day and static electricity was high. The top of the battery literally blew up in his face. He was lucky he did not go blind from the acid. Hydrogen is flammable from 0-100%. It doesn't take much. 1) If you can first expose the top of your battery the hydrogen will rise and dissipate. Then you can use the tender. (If this was the problem). 2) Wyatt did a good job covering extinguishers. They must be maintained to be any good when you need them. 3) Keep all flammables, combustibles etc. in a metal locker with the door closed. 4) Those of use with natural gas water heaters should have them mounted 18 to 24" off the ground because gasoline is heavy and will seek the pilot spark start/pilot light. 5) It's best if your shop is sheetrocked from the house, It gives the firefighters time to knock it down and minimize living space damage. 6) A garden hose dedicated for fire use is a good tool- if it is accessible. 7) If you weld, check on your shop in 10 minutes and 1 hour especially if you are in a shop with exposed wood frame. 8) For those of us with alarm systems, heat detectors are good for a garage/shop area. It is too dirty an environment for smoke detectors to work properly. 9) Smoke detection for the house is a must. Fire is devastating and I would not wish one on anybody. Some basic safety practices will help us avoid a lot of misery. Its easy to overlook the necessary. Its off the Home depot today for fire extinguishers- tomorrow I ride.