UPS that someone gave me because it didn’t work:
Minus its original batteries, apparently slightly past their prime, which I had to pry out of the case by levering with a big screwdriver:
Plus three-year-old unused batteries from the campus fire chief:
Equals I can play my “new” Hammond organ, which is temporarily in storage where there’s no electricity:
Worth noting:
Cold Start
When the UPS is off and there is no utility power, it is possible to cold start the UPS to power the loads from the UPS’s battery.
Note: Cold start is not a normal condition.
Press and hold the on/test button until the UPS begins beeping.
Release the on/test button during the beeping to start the UPS.
Addendum 29-Sep-2008:
Runtime with a 15W wall wart plugged in was about an hour. Runtime with the Hammond plugged in (after fully recharging) was about three minutes. I guess free batteries are worth what you pay for them . . . but I do now know that the UPS works and is worth replacing the batteries.
Hey, those are Anderson Power Poles! I use those things for EVERYTHING!
Possablily the most inventive use of an old UPS we’ve every seen. I’ve passed this one round the office, brilliant!
Now try it with homemade nickel- cadmium or nickel- iron batteries. Perks things up. The electrolyte can be from cheap good nickel- cadmiums. It`s usually the electrodes that make them cheap (or they leak).