So I was tired of trying to figure out how to put two or three 9vs into control cavities. I figured there must be a way to get more volts in a smaller package. I explored some options and come up with these. They are a 9 volt holder converted to take AA batteries. I place 12v batteries in converters using copper tape to fill the container since I couldn't find a spring that would work.
How does it work?
I had an Aggie OBP-1 in a jazz with only a 9v at first. It sounded good, but it was the 18v version. Using this 24v was night and day different, wow! Way more headroom and the tone controls seems to 'do' more. Sorry for my lack of technical explanations.
I don't know how long it would last compared to a standard 9v, but with pups and preamps being low drain I imagine it might be similar to a 9v.
Someone said: Typical Capacity: 55 mAh to 6.0 Volts
Itís the mAh spec that you should compare to a 9V battery, to get an idea.
Looks to be a quarter of the 9V capacity, best case. So you could be replacing batteries 4 times more often. Need to check 9V spec to be sure
My guess is they probably won't fit in a battery box since it is just a bit rounder and longer.
It is 29mm wide x 15mm thick x 60mm long
Compared to a 9v: 26mm x 16.9mm x 48.8mm
I am not trying to get rich off these, just was a fun experiment. If you think it could help you out I am willing to part with a unit for 15 bucks shipped and 10 for each additional.
Just let me know!