They also keep the noise floor lower than a psu. An obvious downside is the disposable waste it creates.
In 2015 I began switching to Energizer rechargeable 9V batteries after trying one on a whim.
They don't make vintage circuits sound as bright as alkaline batteries. Also don't 'dull' on the smooth taper sag as do carbon-zinc chloride cells... but they do taper down throughout their charge and then begin dropping off a cliff when approaching 30% or so.
Up until that point they sound great in MKII tonebender and wah circuits, seem to be a great value so far
They hold charge about as long as standard heavy duty 9v, and are even better on the shelf, stored. Highly recommended to cut costs & waste in the long term. I still keep a few heavy duty 9v on hand just in case, but have yet to encounter a situation where they were needed to make a pedal work properly since going rechargeable.
Anyone have experience with other brands of rechargeable? Solutions?



