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Dc for power supply

Anyone use 12v or 24v car battery as dc power supply for home audio.   Or even for filament on tubes.   I like to know if any members try different types of battery. Lithium, Lead Acid, NiMH, Agm, Gel etc... Can you tell me if it makes a huge differences on each type of battery. I like to use it to run my dc filament on a cd player. Please advise??
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randy-11
1,913 posts
 
 dc filament on a cd player

- eh?

you can certainly run a car stereo off a storage battery - what components are you planning to use?  (not a Class A tube amp, I hope)

any commonly available battery chemistry should be fine
kosst_amojan
2,095 posts
 
I'd say it would be pretty pointless to use batteries for filaments. As long as we're not talking directly heated tubes you might as well use AC. It makes no difference. Having a constant temperature is far more important than how clean the power is to an indirectly heated tube. 
ptss
1,649 posts
 
Waste of time. Totally inadequate power. 
randy-11
1,913 posts
 
noise - free power

I think the OP is a non-native English speaker and filament means something else

if so, go ahead and put a post in your native language below your response - somebody may be bi-lingual
noromance's avatar
noromance
1,780 posts
 
I tried using 2 x 12v lead acid 6Ah batteries in an ECC88 tube head amp (MC phono amp). It was quiet but sounded significantly worse with loss of air and dynamics. Reconnecting internal 24Vdc regulated solid state supply brought it back to life (but with a trace of mains ripple noise).

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