Can anyone recommend a smaller power source than a car battery to use central locking?

I need to use a car central locking mechanism for something other than a car and require a power source smaller than a car battery. Any ideas?|||A car battery is big because it must supply the starter motor about 100 amps. The current draw is small for your application, so any battery, or set of batteries, at least the size of a D cell that, when put in series, add up to 12 volts will do. Try Radio Shack or Batteries Plus or whatever electronics shop is in your area, or search the web for a battery cassette that will let you wire it up for D cells. If you want something rechargable, you can use a small lead-acid gell cell or two in series to get 12 volts. They come about the size of a deck of cards.|||No|||Flashlight batteries develop 1.5 volts per cell. You can place 8 cells in series to obtain 12 volts. You can choose AAA, AA, C or D cells to obtain the size you want and put two (or more) sets of 8 cells in parallel to extend life. You may also try rechargeable cells but check total voltage of pack to be close to 12 volts. Of course if the lock is constantly in use batteries may not last long enough.|||Try a 12amp....|||i don't believe you can just pick a different power source for a central locking mechanism other than what that locking mechanism requires. i mean if you bought a central locking device that was purposely manufactured for cars that have a 12-volt battery, then 12 volts of electrical power is what that device requires in order for it to work properly.





if you want to use a lower/smaller power supply source, you have to find and buy a central locking device that was not designed to work on cars.