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What is the best 9v battery for active basses?

Yeah, I always use Energizer or Duracell 9vs, for anything that needs one.. I currently have a rechargable one (Energizer, I think) in my Alembic Epic, which is my only active bass. More of an experiment re the "Rechargable" part, than anything else, though...:)
 
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Absolutely not! Rock Legend Animal Is Not Dead

Duracell Procell user here. They last for months in my active basses and tuner, are cheap enough to buy in bulk and keep their charge when stored for long periods.
I have a fresh box of 24 that just came today sitting beside me. Plenty for basses, pedals, smoke detectors and CO detectors, and forgetful guitarists...
 
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What is the best 9v battery for active basses?

You didn't specify cheapest or most readily available, so the answer is...

Overwhelmingly the best, longest-lasting, most reliable 9V battery would be the ones manufactured to power spacecraft. These days they are Lithium polymer fuel cells of various types. Because they're polymer you can have one hand-crafted to exactly fill the battery space in your bass. These things have so much capacity that a single fully charged battery would easily power your bass for your entire lifetime. I don't know what it would cost, but I'm confident it wouldn't be more than about $10,000.
 
I vote for non rechargeable lithium ... Afaik they are popular in medical & military applications (but that may have been marketing talk)...

They should be the longest lasting, but I would love to see a real world / controlled test.

They are slightly larger than traditional 9v batteries, more expensive, slightly lighter weight & have a different discharge curve (more conistent voltage, until they finally drop off sharply)...
 
OK, Ill venture a serious reply;

Alkaline - stays charged almost til the end of its life then has a sheer dropoff, so you get more sustained output charge throughout its life

Lithium is newer technology and probably even that much better, however I want a warning before it dies, I just dont want to be playing and "poof" its gone, so Ill take the "distortion warning" of alkaline
 
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I believe lithium batteries give 100% output right up until the point they die, then nothing. So they last longer and you get full performance but they die without any warning. In a bass it might be bettery to use an alkaline battery which you should start to notice it losing power a few hours before it goes all fuzzy then dies.

Btw, Amazon sells batteries with their name on it. I bought some recharable ones - the specs were good and the cost is lower bc they don't have to advertise at all.

Otherwise I buy either Duracell or Energizer - whichever is on sale. No preference.

There was some musician who claimed heavy duty batteries sounded best in pedals bc they had a more musical/warm quality to their output. I dunno - Danelectro was selling "vintage style" 9V batteries for a while with this claim. Now you can just get a power supply that has a setting for voltage and you can simulate a dying battery for hours without it actually dying. I think the OCD pedal might be designed to run at lower voltages to get a different sound out of the pedal. Just an aside.
 

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