The battery builders club

Save them for a rainy day.

Thinking about it

It would be a massive pain, but you can just take them apart and let the cell wraps get destroyed. Then carefully rewrap all the cells after salvaging the insulator rings. I did this to a set of Sanyo GA cells and now they’re all pink and purple. Worked perfectly, I was able to repurpose them.

It was just a bit of a pain, although I did most of it on the floor while watching TV so it wasn’t too tedious.

Just a thought.

1 Like

I rather start over and save these for a rainy day. I don’t have the patience for that

3 Likes

i thought about this and was unsure whether the enclosure and deck had space sufficient in between so i left as is.
the pack wont be putting out more then 100amps so im very confident this wont effect it at all

Just save them for another build. 4p groups of P42A are so common. So many people want 12s4p P42As nowadays

3 Likes

Yeah probably gonna do that route. Gonna need more nickel to do this wink wink nudge nudge :wink:

1 Like

I’m still a bit far from the nickel stash :slightly_smiling_face:

6 Likes

Have fun!! Make sure to put in sunscreen

2 Likes

Use a tape measure then make a choose in pack size or replace the encloser with a bigger one it will fit inside.

I did but missed like half of me so I’m kinda hurting…

1 Like

@Battery_Mooch
https://www.facebook.com/100045897098518/videos/531462254935889/
look safe? or?

2 Likes

Is there anything between the braid and the negative part of the cell at the top? It looks like something is sticking up a bit around the cell but I can’t tell what.

The ā€œhigh currentā€ claim worries me since the act of screwing in the plug that presses down against the braid will push the cap off the cell. You can never tighten it beyond a certain low level unless the cap is epoxied to the cell. IMO you can’t get a good, low resistance connection and it will always loosen up over time.

2 Likes

Nah looks like that is ignored. just proof of a bad concept it seems.

The idea of adding screw terminals to a cylindrical cell is not bad, but using 3d prints and not welds is.

Makes me wonder what the market for selling 18650s with some kind of small threaded post would be… I assume you can get a product like that off the shelf? that you maybe have to laser weld on.

1 Like

Interesting idea!
I’ve never seen something like that but I guess it could be done using weld-on contact pieces for the top and bottom. I’m not sure the welds could withstand much twisting force though. You might not be able to tighten the nut onto the threaded post enough.

1 Like

Not sure if anyone answered you but there’s a couple of good rules to follow re balance leads. First, don’t cross them if you can avoid it. The leads are plastic and not silicone and could wear through when rubbing against each other so there’s the potential for a short. If you’re forced to cross them insulate w fish. Second, have a layer of fish between the balance leads and all of your terminals. This is why u often see guys running them along a layer of fish. Keeps it simple, tidy and much safer.

1 Like

I think you would have to put adhesive to be more safe and maybe a printed cover also so shorts are harder.

Actually, you could make a bent 90deg nickel tab that comes off then you use a fastener.

1 Like

Hey guys I’ve got a couple dings in my lipo, the batteries work flawless and I’m not too worried about it, but I was curious if you guys had any thoughts? You can barely feel them when you run your finger over them.


They’re tattu 12ah 6s 15c lipos

2 Likes

look for voltage dropping. as long as it holds… I wish my printer worked good I would make cases.

1 Like