- Joined
- May 20, 2013
- Messages
- 390
If you go the battery and charger route, make sure the charger you use is actually a battery maintainer - one intended to put on vehicles in storage. They are set up to maintain a full charge battery without overcharging and boiling out electrolyte. Also keep in mind that a charging battery emits flammable gasses - this may present a fire hazard - especially if you weld or cut, or even grind metal nearby. I'd suggest the switching power supply - about $30 and you will be set and not have to worry about the battery. Something like this one would be plenty, especially since the load will be intermittent. An old battery charger with the start or boost mode might work as well -