Patience is a virtue! Some electricians were in the store today working on a new fire alarm system and tying it into the stores mainframe computer. I noticed a half dozen 12v batteries sitting on the floor in the computer room. I asked the techs where I could buy one. Long story short, they replaced the ones in the system and the old ones were only ten months old. The tech gave me one since he couldn't tell me anywhere locally to buy one. Plugged it into the unit and it works great.
"Many of lifes failures are people who did not realize how close they were to success when they gave up".....Thomas Edison