Recap an Adjustable Power Supply DC 0-48 / 0 to 10 A going to use it to charge battery packs

[sam_sam_sam]

I have a 24 volt version of the same type of switching power supply but that one I am relocating to meter module and I might do the same thing with this one but I have to modify an enclosure that is not made for this type of switching power supply in fact I am not sure exactly what type of switching power supply it actually fits because none of one's that I have the screws holes do not line up and not even close but the switching power supply fits in the enclosure

So I have take out the switching power supply board out of its enclosure and drill the hole so that it can be mounted and the live wire are in an enclosure and then mount a plastic enclosure for the pot controls and the meter module but this is going to be very time consuming endeavor and I have to make time for this part of this project

Here is the switching power supply from an eBay seller

https://www.ebay.com/itm/276303332637

[sam_sam_sam]

I have not abandoned this project but I just not had time to devote to it since I have been having to work on last several Saturday and just have not had the time to do anything meaningful to this project and several other projects that I have been working on off and on

[sam_sam_sam]

I found the hardware to mount the switching power supply into the enclosure that the mounting point are not in the right place

One note this is a new item that was just brought in the last couple of weeks ago so I have no idea how long this item will last I bought ten packs of them when they were on sale for $1.99 a pack no limit on this item when it was on sale

G26548 - (Pkg 25) Penn Engineering Self-Clinching Threaded Standoff Metric Type SOS-M3-5

https://theelectronicgoldmine.com/products/g26548

To use these clinching nuts you just need to use a nut riveting tool to install them and if using the power tool version with a Milwaukee 1/4” impact tool that has torque control use setting number two and once it starts pulling the material upward and clinching nut is secure and not turning then stop pulling it up and that's there is to it

One note these are not quite the same as the nut rivets but you do use the same tool to install them when you install the nut rivets when using the steel ones you pull them until it stops pulling upwards but you are pulling more material with this type nut but with the clinching nuts there is very little material to pull and if do too much pulling you will either break the pulling thread rod or you will strip the threads right out of the nut

This is the enclosure that I am using for this project

Right now it is on sale but probably by the time you look at this item it will probably be of sale again when they have limit one per order they mean it you can not change the amount of the item but you can have more than one order though

G27624 - Large Deluxe Beautiful and Strong Black Powder Coated Steel Vented Chassis Box

https://theelectronicgoldmine.com/products/g27624

These are very nice and well built enclosure and well worth the money when they are on sale which they have ran several times over last month you just have either join there newsletter and they send you an email when they are running sales which is really almost every day or so or check there website every few days and see what sales they are running for the next few days

I going to remove the mounting rivets nuts that are in there now and replace them with these in the right place for the switching power supply that I am using and use some for the enclosure for the voltage/current meter module and for the pot controls for the voltage and current adjustments

This switching power supply enclosure will be mounted on the wall of my new shed for easy access and use

[sam_sam_sam]

I might get to it tomorrow I was out of town for last 3 days so I did not work on it
But I did recap one the two 6 volt @ 60 amp switching power supply for the 8 channel battery testing machine and now doing a burn in test on it until tomorrow morning and then I will recap the other 6 volt @ 60 amp switching power supply and then that part will be done and then I still have the 12 volt switching power supply to do it only has one capacitor that is less than 100 UF and I am not sure if I have the other capacitors that will fit on the board until I get started recapping this board

[sam_sam_sam]

This the switching power supply for the battery charging system for testing battery packs with BMS protection board I finally moved this project higher up in priority I need to get this part of the project done so I set up the BMS protection board jig and do some testing that I need to do for building some battery packs that are needed for a project

Well I going to use the 24 volt version that I have of the adjustable switching power supply that does both voltage and current I had to order some 4 mm screws and some 4 mm standoffs and 4 mm rivet nuts to mount the switching power supply into the black enclosure that I bought from Electronic GoldMine I have drill out the rivets that were in there originally because they do not line up correctly with the switching power supply enclosure mounting holes

I have the multi battery cell voltage monitor meter and switching power supply with voltage and current pot controls and now I have to make the battery holding jig and hook everything up and mount it on a plastic cutting board for easy access and use

This project has been in the works for almost a year now and I just need to get it finished and start using it

I have the switching power supply modified the battery cell voltage monitor modified the device enclosure in the works to be modified and completed hopefully soon then it is just a matter of putting everything together and be done with it

[CapLeaker]

Well… you know that
Wanna see this thing!

[sam_sam_sam]

Well… you know that
Wanna see this thing!

Here is what it going to look like when I mount the switching power supply in the enclosure but it will be longer and it be black in color the pot controls will be mounted on the outside of the external enclosure and the voltage and current meter module will be in a plastic enclosure by itself but screwed to the main enclosure

This is the enclosure that I am using for this project

https://theelectronicgoldmine.com/products/g27624

The last picture is the spring loaded terminal that I going to use on the battery cell for both the positive and negative terminals on the battery it be designed for testing Milwaukee and Ryobi tool battery packs I saw some one did this for a battery testing but mostly made for charging a unbalanced battery pack but I going to take it several steps more but use his concept this where I got the idea for this project but person that I got the ides from he used one amp charger modules made for one battery cell of course it take several hours to charge the battery cell rail if it more than one cell high

My idea is similar but with a twist I going to modify the battery tool charger to check the functionality of the BMS board but have the flexibility to slow charge the battery pack and monitor each battery cell rows so I can see how well the BMS protection board handles each row of battery cells

To slow charge the battery pack I have to get a very simple BMS board for the slow charge function because I do not know if I can modify the tool charger to go into slow charging mode or not

I will have to modify the voltage monitor input connector plug for the tool battery tester and I have modify the battery testing machine that the mosfet controller board that has issues with I reached out to a seller who sells this battery testing machine but they never responded to my part request so I have given up trying to fix the ones that are having this issue not real big deal

[CapLeaker]

sam_sam_sam
Dayum! Cool homebrew! Isn't that the funny PSU with the strange volt / amps value you got from fleabay?
Hmm… modifying the tool charger for slow charge? I seen some thread somewhere in the ether that actually did just that. He changed a few resistors etc and actually got it to work.

[sam_sam_sam]

sam_sam_sam
Dayum! Cool homebrew! Isn't that the funny PSU with the strange volt / amps value you got from fleabay?
Hmm… modifying the tool charger for slow charge? I seen some thread somewhere in the ether that actually did just that. He changed a few resistors etc and actually got it to work.

if you find this video can you please share the website link for I would be interested in watching to see how it was done
Yes the same switching power supply

[sam_sam_sam]

Update on this item

G26548 - (Pkg 25) Penn Engineering Self-Clinching Threaded Standoff Metric Type SOS-M3-5

https://theelectronicgoldmine.com/products/g26548

To use these clinching nuts you just need to use a nut riveting tool to install them and if using the power tool version with a Milwaukee 1/4” impact tool that has torque control use setting number two and once it starts pulling the material upward and clinching nut is secure and not turning then stop pulling it up and that's there is to it

One note these are not quite the same as the nut rivets but you do use the same tool to install them when you install the nut rivets when using the steel ones you pull them until it stops pulling upwards but you are pulling more material with this type nut but with the clinching nuts there is very little material to pull and if do too much pulling you will either break the pulling thread rod or you will strip the threads right out of the nut


This type of clinching rivet nuts can not be installed with the rivet tool and I am not sure how you exactly install them I might figure this out later

[sam_sam_sam]

Well I managed to get some where with the outside enclosure for the adjustable voltage and current switching power supply for my battery testing machine BMS protection system tested jig I am not finished with it yet but I did the hardest part of it

More to come later when I hook up the volt and current meter module and the cooling fan that is the top of the switching power supply enclosure cover and figure out how and where to put the voltage and current pot controls which is going to be somewhat of a challenge to figure it out which makes the most sense to put it because I have not decided if I am mounting it on the wall or not

Unfortunately the 3mm clinch nut rivets did not work the way I wanted them to work
But the next time I will have the 4 mm screws that I did not have this around for the voltage and current switching power supply I found some at Home Depot but unfortunately they are expensive 2 screws for $1.25 a pack which I bought for this one for the cable management plastic clamp that I am going to use

At first I thought I would use the 4mm nut rivets but it would make the switching power supply enclosure and the outside enclosure lid would not sit flat so I had to rethink how I was going do this that is why there are so many different holes in one area because could not make up my how to do this the easiest way because I have more than one of these I am going to build

I have some 4mm screws and some 3mm nut rivets from eBay sellers for the next one I will do and hopefully it will go faster than this one has

[sam_sam_sam]

Well things did not go as planned unfortunately I somehow managed to fry the meter module and tried to modify a meter module but unfortunately the current one was not the setup for the switching power supply shunt unfortunately so I think what I going to do steal the voltage for a voltage meter module and then use a current meter module instead of them on the same module because you do not have a way to adjust the current meter input voltage for the shunt that is used unless I want to times by 2 which is in convenient to remember

[sam_sam_sam]

I have to decide whether or not I want to use the buck converter that has a voltage and current meter in one module and just use the switching power voltage / voltage controller for maximum voltage / current adjustments and be done with it

[sam_sam_sam]

I have not adamant this project I just have not had time to devote to it lately unfortunately