I know using multiple power supplies is safe, but what if??????

Short_Shot

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Ope.

Up to 14.4vdc. 100 amps. Under $200.
 

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Short_Shot

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And Sherylin is a womans name. So I am not a "he". But then again maybe you intended to try to insult me. Who knows.
My girlfriends name is Sherri Lynn. Intredasting switchup on the spelling.

But it appears that you're going out of your way looking for ways to be offended if you think generically being called "he" online is an intentional insult.
 

Short_Shot

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Ok so that is a 12 volt 100 amp PS. But I need a 24 volt one.
So it won't work for me.
As for blowing up. I did not see the need for giving out useless information that had no relevance to the questions being asked.
I assumed [wrongly of course] that any one knew that a computer ps had 3 and 5 volt rails on them as well as -5 and -12 and 12 volt rails. However I didn't see any logical or meaningful reason for stating this.
Not sure how that is going off the handle as you stated though.

Anyhow, I again assumed you read what I have written here. Again i am wrong and you are suggesting I invest in a 12 volt charger to charge my 24 volt battery rather than invest in boosters to make a 12 volt charger charge a 24 volt battery.

Would you care to explain how a 12 volt PS is going to charge a 24 volt battery WITHOUT boosters?
Thank you. :)
Would it care to explain why you included none of this information and then got angry when assumptions were made based on the total lack of information?

Because none of this was in the first post.

Since you're quick to play the victim and incapable of spending 8 seconds on Google to find what you need here is a 50 amp 24v charger.
 

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Short_Shot

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She got pretty angry pretty fast. Seems like we all were trying to be helpful with the info she provided. Oh well.
Complete lack of information until after a "wrong" suggestion was made. Then suddenly we're the ones who are in the wrong I guess.
 

wholybee

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The original question was if multiple power supplies could be used to charge a battery if they were different amperages. :unsure:
 

Short_Shot

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I assumed [wrongly of course] that any one knew that a computer ps had 3 and 5 volt rails on them as well as -5 and -12 and 12 volt rails. However I didn't see any logical or meaningful reason for stating this.
We do know this. The problem was your claim that you have 8x 30a power sources when you absolutely do not.

At best you have 8x maybe 12 amp sources MAYBE. Or 4x 24a sources. Or 3x 30a.

Now armed with the necessary information that you were expecting 10a @ up to 29.2 v depending on the type of battery you are charging that makes it even less viable.

Even if you only set each one for 26v, 10a is of course 260w and at 12 minus efficiency of say 95% you need each rail to cough up 22.81 amps.

That power is not available from your power supply. There's no way you can pull 80a @ 24v (1920w) let alone the higher wattage you'd need to charge a 24v battery at 80a.

Absolute best case for you to use this power supply is 4x 10a converters, 8x 5a converters, or some combination that won't exceed 1200w. Of course you can use the higher current ones.

You are also risking over current protection from the power supply of you just hook it straight up with no current limiting device. I'm pretty sure if you hook a generic voltage booster to a lithium (you didn't say if it was lithium or not) it'll just pull full current when you adjust the voltage up and it'll nuke itself. Maybe.

I've never been silly enough to push one to self destruction myself.

So you'll only get half the current you suggested in your previous post and that's even if the psu can put all 1200w to the 12v rails, and it probably can't.

A 24v 50 amp battery charger is around $200 and will be more power than you have available with that power supply. And likely cheaper than you had initially planned anyways.

That's my suggestion.

Nothing like being set up to fail with zero information then being chewed out for making guesses. You must be middle management.
 
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