I'm working on an electronics project that I need to make sure stays functional even if the power goes out. I need something like a wall power adapter that also has a battery backup inside. That way if the power goes out, the battery will supply voltage until the power comes back on. When the power comes back on, the battery charges back up.
Can anyone think of an off-the-shelf product that would do the trick? I need at least 3 Volts DC, and 50mA of current.
Can anyone think of an off-the-shelf product that would do the trick? I need at least 3 Volts DC, and 50mA of current.