Battery power and power consumption help! Answered
I have a geocache project and need help with the power supply and power consumptin inside it.
The basics of the project:
It is a large wooden box.
The box has a on/off switch.
It also has various various coin slots.
Flip the switch, turning it on, to supply power to the solenoid inside.
Dropping a coin through the correct slot will trigger a momentary micro switch which activates the solenoid and springs out the drawer of treasures.
Take your loot.
Close the drawer.
Turn off the switch and leave it for the next adventurer.
And it works! Yay!
Commoonents the question:
The solenoid is a 12v door latch solenoid.
The battery is a 12v 5ah sealed lead acid battery.
The coin micro switch is:
This geocache that lives, protected, about 3 blocks from my house. I obviously won't be charging the 12v battery very often.
Since this setup only has momentary power draw once in a while. Say once a week. Maaaaaaybe. Does anyone have any alternate power recommendations? I am okay with changing out the batteries once in a while. But I'm hoping for a once every few months.
I originally used a new lead acid battery but it seems to have died. Possibly from letting the charge fall to low and then sulfation occured.
I'm considering using a 11.1V Lipo Rc battery instead so I can recharge it at various levels of depletion.
Thing is I need it to last a worth while amount of time without loosing power but also killling the battery from just sitting there.
Thoughs woukd be GREATLY appreciated.