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In Reply to: RE: You're absolutely right posted by Bob_C on November 29, 2015 at 13:54:37
You have me confused with someone else. I said nothing about cellphones, mice, keyboards, or your vibrator. I said nothing about the potential for battery explosions. Get your "facts" straight.Yes, I once owned a REGEN so I have an interest in what some owners -might- hear with a battery operated REGEN.
Do you own a REGEN? Have you owned a REGEN?
Edits: 11/29/15Follow Ups:
Here are three fire warning posts. LOL Short term memory issues? SMH...
http://www.audioasylum.com/forums/pcaudio/messages/15/153178.html
http://www.audioasylum.com/forums/pcaudio/messages/15/153224.html
http://www.audioasylum.com/forums/pcaudio/messages/15/153228.html
If you would like to know if I have a Regen, maybe read the threads and not crap on them.
A safety warning is 'crapping' on this thread? Where is your contribution?Also, I think you have a comprehension problem. No where do I say that the battery has the potential for explosion or catching fire. Better read my posts more carefully.
Edits: 11/29/15
I feel like I am teaching Romper Room... ROTFLMAO
Let's see your words... Cleopatra
"""Inmates: Play at your OWN RISK....
These batteries are capable of supplying a ton of instantaneous current. Careful handling and a fuse wouldn't be a bad idea.
So you mean to say a battery that can source current in the 10's of Amperes is not a fire hazard? I suppose the battery itself might not ignite but we're talking about current that can melt wire insulation and can even weld metal.
Not being pedantic & argumentative. Just pointing out safety concerns that you choose to ignore.
You can ignore the TRUTH but it's not about the battery formulation... it's about the amount of current the battery can source. I don't care if it's alkaline, lead acid, nickel metal hydride, etc.
If the battery can source 10's of Ampere's of current then there is a fire hazard and safety concerns... not necessarily in the battery itself but with wiring, handling, metal tools, short circuits, etc.
You yourself stated: "...the self noise is likely to be very minimal from a battery that can deliver 60Amps continuously & 120Amps instantaneously.
That kind of current can be a fire hazard, period."""
You are totally in De-Nile...
If you took the time to understand the context and content of my posts (or had an understanding of jr. high school electricity), you will see that these were not an indictment of the battery itself.Where do I say anything about cellphone batteries?
Where do I say that the LiFEPO4 battery has the potential for catching fire or exploding?
It is the current that one has to be aware of. Do you get it?
How are my safety warnings 'crapping' on this thread? There are obvious safety concerns worth mentioning.
The only thread 'crapping' going on here is your carrying on like a lunatic.
Edits: 11/29/15 11/29/15
I should have expected another YouTube video as that's what you normally resort to when you're at a loss.
It is a waste of precious time dealing with one as inane as you...
Keep posting and try and differentiate between the battery exploding and the crap around it exploding. Like this conversation matters... smh... Did you miss pre-K today???
...differentiate between the battery exploding and the crap around it exploding...
Oh so you DO finally get it!
I can only conclude that it is product related sensitively that drives all these compulsive responses to every post that is made in response to 'his' thread.
There is no attempt by the poster to address any of the points raised about battery powering the Regen.
I didn't see you correcting Kenzo when he posted about batteries exploding in reply to your "Inmates: play at your own risk"I noticed you selectively quoted my my reply to Kenzo's post "Not the same battery chemistry - no risk of fire or battery explosion with LiFEPO4"
You extracted this "no risk of fire or battery explosion with LiFEPO4" completely changing its context & meaning to suit your agenda & make it appear I was claiming something I wasn't.
So maybe you should stop playing forum games - asking others "Do you finally get it"?
Edits: 11/29/15
Where's my "agenda"? Safety?All I did was warn that high currents can be a safety hazard regardless of battery type. Did you miss that part? And then the whole thread goes to crap.
Edits: 11/30/15
You seem to have a wider agenda - you already brought up the topic of safety on the other thread - now you come to a thread about "listening impressions" & suggest that as a manufacturer, there's conflict of interest in what I post.
Why not post this on the other thread - why pollute this one?
Yourself & Fmak seem to be trying very hard to bury these threads in "noise" or maybe you're just looking for attention - I don't know what your motivation is?
all the little nit follow-ups are producing more 'noise' than any post that I initiated.
I'll leave you with a couple thoughts. Any additional 'noise' is not my responsibility.
1) A Manufacturer comes here touting the benefits of a specific battery and charger implementation making bold claims of superior sonics over just about any power supply out there.... the same battery and charger implementation used in his very own products that he sells from a weblink provided in his Asylum (M) anufacturer's Profile. Is this bordering on conflict of interest? Others can be the judge of that.
2) The same Manufacturer suggests using a battery that in his own words, can source 60 - 120 Ampere's. I suggest safety precautions including a fuse. How is that an "agenda" ?
"I'll leave you with a couple thoughts."
Thank you - please do leave!
John Swenson has just indicated (on computer audiophile) that using the onboard regulator to trickle charge the battery is a no no and that keeping the battery at 3.6v is not recommended due to potential to lower chip life on the Regen. So a question I have for all the EE's here is what resistor value do I need to lower the steady state fully charged level to 3.3 v? My charger is a typical lifepo4 charger. I lost the spec sheet but I assume they are all very similar.
Theob, here's what I recommend you do
- put a switch between the battery & the Regen so that you can disconnect it from the Regen
- use a 3.3V regulated supply permanently connected & powered on - to trickle charge the battery at all times
- keep your LiFePO4 battery charger for use in recharging the battery if you ever let it go low in charge. This could happen if you don't have the trickle charger connected/powered & you are running the Regen off the battery. If you are going to store it away for a period of time then disconnect the battery from the unpowered charger.If you do let the battery go low, disconnect it from the Regen via the switch & recharge with the battery charger.
There's no point in trying to lower the output of the battery charger to 3.3V - it won't work - LiFePo4 battery chargers can output any voltage when in the initial constant current stage of recharging & only shift to 3.6V when they go into constant voltage mode at the end of charging.
BTW, your profile doesn't accept emails so I can't respond to your emails to me
Edits: 11/30/15 11/30/15 12/01/15
Sounds reasonable.
JS uses his knowledge to frame his answer, unlike those who propose powering schemes that not intrinsically sound.
You can find out the current consumption of the chip whilst working (which may not be constant), and add a resistor. This will affect the chargers's output impedance. You can get a constant current semiconductor and fit it, but these are complicated steps to take.
If you must, then a 3.3 V precision regulator such as those sold by Twisted Pair will do. It may just be possible to power one from 3.6V, and you can search form suppliers like DIYinHK etc.
But really, you should try other schemes of powering the Regen to see if they offer the improvements you desire. I have posted suggestiond here and elsewhere, and I get very good sound from them - the best so far being a 7.4V LiPO powering the Regen, which in turn feeds an iFi USB power into the dac. This is with the 'solid connectorjunked and a self made 10cm Wireworld Starlight Silver cable with replacing it.
Hi theob,
Its no problem to tricklecharge the lipos with 3.3 or 3.4 Volt. You arrive at 80% of max.charge and i did it for years without damage.
I use a variable linear lab-supply at 3,3 and max.3A to tricklecharge the lipos of the regen.
I don't think that SQ will benefit from the audiophile qualities of a normal batteriecharger with all of his elrctronical charging controls.
You made your point several times Abe. Drop it and move on if you don't like the presentation of his post. You have been banned because of the antagonistic approach to getting a response regarding your "concerns".
MAK
Hi,
I have used lipos for ten years ( cplay-times.julilsoundcard etc.) with good results but some inconveniences in maintenance. Tricklecharging with 3.4 volt was never a problem and so they last for years.
I use the regen before a xmos usb to i2s converter and must say that here the lipo's do a stunning change in SQ. The difference is much bigger than changing a dac - for example schiit yggdrasil and a 40$ Honkong NOS-DAC.
My other components are fed with ultracaps 3000-9000F which can be used like batteries and i am going to compare the lipos with the ultracaps, which can be charged a million of times and have very low ESR to.They can be tricklecharged too whithout degradation of SQ .
So i am a happy camper and i don't understand discussions with people who never tried the modification and contribute nothing substantial to this simple but extraordinary effective modification.
Yes, sonics, thanks for posting your experience with liPo batteries & the sonic improvements they bring.
Have you tried this way of powering the Regen with the Lipo?
Ultracaps are great but they are limited to 2.7V so need 2 in series to be able to handle higher voltages. However I have just discovered a new ultracapacitor - a Lithium ion ultracapacitor which can handle 3.7V - they are a new type of device - called an energy storage device - half way between a battery & a capacitor
I agree with your other sentiments too
Hi ,
thats right,2 ultracaps must be used in serie to reach 3,3 V but i use
2 x 2 parallel to reach lower ESR.
I can compare lipos with ultracaps after holidays in 2 weeks.
Sonics,
I am thoroughly intrigued by your potential capacitor use in this environment. And I am anxious to read about your direct comparisons between the batteries. I hope that you are planning to do this via the currently discussed Regen modification?
Lance A
Hi lance.
I am in egypt for two weeks and i do the test after holidays.
I also intent to test a good linear PS with chokes and large conventional capacitors after the regens regulator.The effect of the lipos ( i use 6 parallel to lower the ESR ) is spectacular and the only reason to try the other alternatives are the little problems with the maintenance of the lipos.
Hello Sonics. I do love me some Egypt. Sooooooo much stunning History of humanity. Any way, I will be awaiting the results of your comparative evaluations. Makes my tired just thinking about all of the work involved to get it all done and compared.
Lance A
Can you send me a link to the charger you use?
http://audiobyte.net/products/hydra-zpm
Note that the quoted noise is no better than a superregulator.
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