Can the StenLight be operated from primary batteries?
Yes, but if the battery can’t provide at least 7 volts at 1 amp you will not get full brightness on Turbo mode. Also, an adapter or connector will be needed. We plan to offer a 9V adapter to let you use an alkaline 9V battery as a backup. It won’t run on Turbo very long, but will run on Low or Medium for many hours. We will also offer an adapter for 6 AA cells. Primary lithium cells and other more unusual batteries can also be used as long as they provide sufficient current and voltage. Be sure you have the polarity right before attaching non-Stensat-provided batteries (see the note at the bottom of the Fact Sheet for more details).