How long will Add the Wally last after I have charged it?

The Edison the Petit can remain, after it has been charged, in the first light mode for maximum 48 hours, at the second light mode for maximum 20 hours and at the third and brightest light, for maximum 7 hours.

Be sure to unplug the Add the Wally from the charger after charging the lamp. Turning on the lamp while charging it, is not good for the battery, so the light will eventually get lazy and will no longer charge properly.