JP spot welder

[riba2233]

You got reply!

 

[tomjasz]

i don't really want to buy an extra charger just for charging lead acid.. it's old technology and won't be used outside.....

So if I set voltage to 14V that should be fine?

I use a Battery Tender Jr, they cost ~$15 and have 6-8 different programs they automatically use to keep a lead acid battery properly charged.

Buy a Satiator charger, from Grin, it will do it all! But you can find battery tenders for under $10. I don't know where a BRANDED Battery Tender Jr. can be found for $15 maybe dssguy1 can point that out? But, "old" tech SLA batts are here for the foreseeable future.

 

[fortisi876]

Any chance on getting an update where we are on the list? Timeline?

 

[riba2233]

Any chance on getting an update where we are on the list? Timeline?

You got PM!

 

[Offroader]

Quick question, if I weld a pack with this welder and then decide I need to pull the tabs/welds off to make another battery configuration. How difficult is it to remove what I have welded to start over?

I basically need to know if I can change my battery configuration easily or should I expect this to be a permanent weld?

Thanks.

 

[tomjasz]

Quick question, if I weld a pack with this welder and then decide I need to pull the tabs/welds off to make another battery configuration. How difficult is it to remove what I have welded to start over?

I basically need to know if I can change my battery configuration easily or should I expect this to be a permanent weld?

Thanks.

The welds are pretty solid but most of my welds were relatively easy to pull off. A quick jerk with a pair of pliers. It is possible to distort the cell negative side casing. So far the cell bodies have not been ruined, at least not visually.

 

[riba2233]

It can be done with pliers and then dremel to grind off the remains, but it's not something you should really plan on doing, it could bend the cell's negative pole like tomjasz said. Alternatively you could weld cells in parallel, and then just solder them in series with copper wire, that way it will be easier to reconfigure.

 

[Lurkin]

Quick question, if I weld a pack with this welder and then decide I need to pull the tabs/welds off to make another battery configuration. How difficult is it to remove what I have welded to start over?

I basically need to know if I can change my battery configuration easily or should I expect this to be a permanent weld?

Thanks.

Consider a snath based pressure pack. then you can change them at will.

 

[dssguy1]

i don't really want to buy an extra charger just for charging lead acid.. it's old technology and won't be used outside.....

So if I set voltage to 14V that should be fine?

I use a Battery Tender Jr, they cost ~$15 and have 6-8 different programs they automatically use to keep a lead acid battery properly charged.

Buy a Satiator charger, from Grin, it will do it all! But you can find battery tenders for under $10. I don't know where a BRANDED Battery Tender Jr. can be found for $15 maybe dssguy1 can point that out? But, "old" tech SLA batts are here for the foreseeable future.

I have purchased my Battery Tender Jrs from Amazon. Bought 3 in the past 5 years and they ranged from $17-$23 for the standard JR model. They also have a high efficiency model that they have to sell in California. I bought that a couple weeks ago figuring it might have more functionality built in with better components since they probably had to completely overhaul it to meet California's generally insane requirements. It was actually $2 cheaper than the standard Tender Jr.

I am looking for a Magnetic battery clamp to use for 18650s. I have my spot welder on the way and can't seem to locate a decent source for this item. They come with most of the 788H on ebay but can't find them by themselves.

 

[riba2233]

Here you go:

http://www.aliexpress.com/item/18650-battery-welding-fixture-18650-battery-fixed-clamp-18650-Battery-Fixture-Clamp-for-2-6-batteries/1907351540.html?spm=2114.01020208.3.1.EiIzVs&ws_ab_test=searchweb201556_2,searchweb201644_0_79_78_77_82_80_62,searchweb201560_5

 

[fechter]

Here you go:

http://www.aliexpress.com/item/18650-battery-welding-fixture-18650-battery-fixed-clamp-18650-Battery-Fixture-Clamp-for-2-6-batteries/1907351540.html?spm=2114.01020208.3.1.EiIzVs&ws_ab_test=searchweb201556_2,searchweb201644_0_79_78_77_82_80_62,searchweb201560_5

That looks handy. Bet I could make one out of a piece of wood.

 

[dssguy1]

I made one to 3D print. I will print it tonight and of my dimensions were right, I will upload it for others to print.

 

[shawname]

My welder is always live- the copper welding tips always have 12 volts.- Does the circuitry connect to the positive pole of the battery or the negative? Any ideas as to what I am doing wrong?

thanks,

Shawn

 

[fullonoob]

edit

 

[dssguy1]

where do you have it connected right now? it make sense to have it on the +

In his video on how to use it, it is on the "Negative" post. The DIY kit shows the PCB with "Battery -" on the mounting location as well. So you may want to delete your above post so as not to confuse people.

 

[riba2233]

My welder is always live- the copper welding tips always have 12 volts.- Does the circuitry connect to the positive pole of the battery or the negative? Any ideas as to what I am doing wrong?

thanks,

Shawn

Yeah it connects to negative, please tell me if everything's ok, thanks! You have legend on bottom silk screen on the board.

 

[fechter]

We might want a "User manual" in addition to the DIY build instructions (which are awesome).

 

[shawname]

OK, I have it connected to the positive battery terminal- I'll change it tomorrow! I didn't read the circuit board silkscreening. Might be good to include a piece of paper showing the connections for guys like me..

 

[dssguy1]

Do you have any details on a case for this device? I have a 3D printer and could print one if a model existed.

 

[tomjasz]

Here you go:

http://www.aliexpress.com/item/18650-battery-welding-fixture-18650-battery-fixed-clamp-18650-Battery-Fixture-Clamp-for-2-6-batteries/1907351540.html?spm=2114.01020208.3.1.EiIzVs&ws_ab_test=searchweb201556_2,searchweb201644_0_79_78_77_82_80_62,searchweb201560_5

That looks handy. Bet I could make one out of a piece of wood.

Search for the correct Chinglish."Battery clamp". $10 free shipping. I'd like a few printed. Anyone have a capable printer?

http://www.aliexpress.com/item/Free-Shipping-6-Section-battery-pack-Fixture-18650-Strong-Magnetic-Battery-Clamp-18650-battery-fixation-Molds/32280888987.html?spm=2114.01020208.3.19.FXmUjK&ws_ab_test=searchweb201556_1,searchweb201644_2_79_78_77_82_80_62,searchweb201560_1

 

[fullonoob]

just make it out of wood 5mins job

 

[riba2233]

Yeah user manual is definitely in plan

I've made some fixtures out of wood, but I'd rather buy one because your wood fixture will never be as precise, and after you stack many cells you'll see imperfections and your alignment will be a bit off, so cells wont stack perfectly.

 

[dssguy1]

Here is the model I made to 3D print a battery clamp for about $1 in material.

http://www.thingiverse.com/thing:1205466

 

[Offroader]

Can't you just clamp the cells together with a something flat and two C clamps?

Is it a better idea to buy a battery holder, because one of those battery holder listed looks like it left some space between the cells. I need mine to be as tight as possible.

 

[dssguy1]

You can do whatever you want but I prefer to tackle my problems with elegance, not metal clamps on thin walled batteries.
The magnetic clamp I designed doesn't leave any space. They touch each other before and after being welded.