All DIY Battery builders Need a Variable Power Supply

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Variable Power Supply - s.click.aliexpress.com/e/_9iZcjB
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Опубликовано:

9 окт 2021

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Комментарии : 57

@ricdesan6714 2 года назад

Thanks Jehu ... picked up a 0-60v bench top that is bringing hardly used batteries out of low state that tested like new after a charge!!!

@stevenc22 2 года назад

I had one of the variable power supplies, but it never quite worked right. Eventually i just bought a bench power supply off amazon and its great and the price was about the same!

@xmtxx 2 года назад

Wow, thanks for the info! I was looking into some bench power supply for a friend. Paid my crappy bench one 0-60V 3A (180W) for 70E 2 years ago. And I had a hard time finding it, most of them were 0-48V. Those are 0-80V 8A (500W). For 50E, that's a no brainer.

@scottbaker9066 2 года назад

Just charge them as a 3 series NiCd at .2A and they will come up to 3.3v in 5 minutes. Then about 50% will be 'good enough' which for my projects is 2Ah per cell.

@SirValak 2 года назад

Awesome bro! THanks for the video. thats the best variable PSU have seen in a long time. Went and bought one trough your affilate offcoure :)

@swicked86 2 года назад

You just gave me a great idea for 18650 in packs that need to me recovered. I haven't tried finding out if CC or CV is proper or if both are required. Anyhow use neodymium magnets attached to the power wires to connect to the single cell. The nickel plating is a great conductor and will make a strong connection. I've seen magnets that take a counter sunk screw, a ring terminal screw and nut your golden. Thanks for innovating and getting me thinking as well!

@zaprodk 2 года назад

Both are required. CV to make sure it never goes over voltage and CC to limit the current to 0.05-0.1c while recovering.

@sidjones-randomstuff2058 2 года назад

Thanks, I could sure use one about now. 👍

@james10739 2 года назад

I have a couple boost buck converters and some switch mode power supplies that does most stuff for me

@Gold63Beast 2 года назад

Me: calling a friend at 2am Friend: hey, do you know what time it is???? Me: let’s talk about batteries! Have you seen the new lithium battery pack Jehu got is awesome. Me: hello? Lol Oo well. JK love you bro. Keep up the great work.

@GIGATT808 2 года назад

wanna be buds?

@Gold63Beast 2 года назад

@@GIGATT808 sure 😂

@SuperBrainAK 2 года назад

@@GIGATT808 yep you guys can talk about batteries at 2AM together, I'll just stay up trying to finish soldering or prototyping a project 🤣

@Gold63Beast 2 года назад

This is the best option for something on the low price range. Definitely. But everything Jehu says. 100%agree. I like the Riden Power Supply but it is expensive but WOW! What an amazing power supply. A bit more complicated but worth it. I have maybe 3. It’s always good to have a few. A cheap one and a really good precise one. Awesome video Jehu.

@bigdaadio.K2WW 2 года назад

One exception, Jehu claims @5a each cell is getting 1a, each battery PACK (4 cells) is getting an amp which is only 250ma per cell.

@Gold63Beast 2 года назад

@@bigdaadio.K2WW I think he meant 5a each side meaning 1a each cell.

@jehugarcia 2 года назад

That’s not how it works, if you charge at 1A a 7s packs all cells get 1A through them. Paralleled cells get divided intro the total power input/output

@Gold63Beast 2 года назад

@@bigdaadio.K2WW meaning 10a total. Where the max is 1a each. Pretty good for me for seeing the reliability of the cell.

@Gold63Beast 2 года назад

@@jehugarcia right. That’s what I was trying to say. Awesome video Jehu.

@hjeffwallace 2 года назад

I keep thinking I want to build a Jehu project. So far I made a couple of ebikes. Now I’m thinking solar & batteries. I like starting small, with an ultimate goal of a huge power wall & solar. What is one of your starter battery kits that can be expanded?

@Toaster808 2 года назад

Was going to get one, but I've been burned on Aliexpress one too many times. Ended up ordering a 0-60V 5A unit off Amazon. Should be here in a couple of days.

@rollandelliott 2 года назад

exactly the ones on amazon are cheaper too.

@quinnfoster4671 2 года назад

Damn the product looks legit! here I am with a dead Juntek they have no support.

@TheRicky191 2 года назад

Hello quick question what is that little black device called.

@g2tana 2 года назад

I normally connect it back to charging through the bms once the battery goes above the minium voltage required by the charger

@lifehackertips 2 года назад

I use the imax b6 for $20. Works well for charging RC batteries so it’s good enough for packs of 18650

@james10739 2 года назад

Ya as long as you know you have to do like a 3s if you only have 8v and then up 1 or 2 cells till you get the voltage up

@Joey-kv6qr 2 года назад

Just wondering what if you send enough voltage to turn on the bms and with a second variable power supply connect it to start charging the batteries?

@sams5803 2 года назад

I need one soo bad!

@jeffrey1841 2 года назад

I bet you could even bring back to life throwaway alkaline battery used in flashlight if you use extremely low millivolt amps

@zaprodk 2 года назад

Well technically group 6 has a higher capacity than the rest since it takes longer time to pull it back up, or am I wrong?

@E-BikeAndi 2 года назад

Thats the way , i wake up low-voltage Batterys. Slow charging directly without BMS. At 2,6V per Cell, you can load it correctly by bms and the right charger ;-) Sorry, for my rusty english

@scotthenderson4376 Год назад

This work for Lifpo4 packs will the48v go high enough for them to charge or get the 60v

@OWK000 2 года назад

A solar panel and cheap solar charge controller on my lead acid car battery will charge at just one volt above whatever voltage the battery is holding at the moment and is the best way I have found to save a dead car battery. It will desulfate after about a week of controllerized solar. I wonder how that would translate to lifepo4 and li ion.

@kswis 2 года назад

I let the magic smoke out of my Dr meter benchtop and it's now cobbled together so I can use it haha. Every time I click a link for Ali express it takes me to clothes or in this case a remote for $68 though the similar items down below are power supplies... freakin Ali express

@parkerazz4385 2 года назад

What does NL stand for on thies Chinese power supply

@igorkvachun3572 2 года назад

Yes 👍 🔌 ⚡

@josearrasola7236 2 года назад

Good morning sir , was just watching some of your old videos ! On the 3.5jw pack I still can’t get the BMS to turn on ! Which BMS can I put on take off the original one off ?

@quinnfoster4671 2 года назад

BHU sells them

@josearrasola7236 2 года назад

@@quinnfoster4671 hello what is SHU ?

@toneault7499 2 года назад

hi. can you tell me please. WHAT IS THE VOLTAGE on your 48v and 100v power supply.. dose it go over the stated.. and by how much if any.. ?? please. and thank you in advance. tone uk

@PrePaidTeam 2 года назад

U mean amp ? usually 3 5 10 20 for the 48 and 5 10 for the 60v .. 100v 4a

@tonylozano8574 Год назад

I'm a little confused with your link. Would I be buying the same product you are using in your video? Your link to page looks fine, but when clicking on buying the description on AliExpress confuses me. So, is the page on AliExpress correct?

@tonylozano8574 Год назад

I tried the buy through AliExpress. Tried to create an account would not accept. I don't trust that site. Ok I'm moving. I'll stick to Amazon.