said by cdru: said by shdesigns:
Using a wall wart may work but it may also overcharge.
If the battery already has a charge and you just want to maintain it, putting the wall wart on a simple timer can do the trick. Running it say for an hour a day should be more than enough to keep it charged but minimize the overcharging effects.
But yeah, a float charger is the better solution.
Putting it on a timer is a good idea. Hadn't thought of that. I have no idea what kind of power supply it is or where it came from. Every time I get rid of some electronic device I save the power supply. I have a whole box full of them that I've collected over the years. Some must be at least 15 years old.