The battery builders club

Zach · July 19, 2019, 6:29pm

Hope it helps!

Andy87 · July 19, 2019, 7:01pm

If still questions open than just list them up here. Should be an easy to answer and will help other people having the same questions as well. Don’t worry, just ask. That’s why we have this thread here

Yungdaff · July 19, 2019, 8:03pm

This is awesome! When do you have plans to write more?

Zach · July 19, 2019, 8:14pm

With my renewed determination, i’ll try to add a little every day. Maybe a subheading a day.

Yungdaff · July 19, 2019, 9:26pm

Great, very excited. I am kind of a new builder and I noticed how hard it was to gather information. Sure you could browse this thread and the one on the builders forum, where you would learn to not cross balance wires, isulate P-groups and such. But still, that is far from everything.

yelnats8j · July 20, 2019, 1:18am

What do you guys do for charging P groups that differ?

Ive got one that seems that it become un balanced.

XTLA · July 20, 2019, 1:42am

I have same question about this

yelnats8j · July 20, 2019, 1:53am

@thisguyhere you seem to have a high level of expertise. What do you do?

@zach mabye?

Andy87 · July 20, 2019, 4:36am

Charge the individual group which is out of balance through the jst with a hobby balance charger or via usb with a step down converter.

yelnats8j · July 20, 2019, 4:42am

Is there any explanation on how to do this?

Andy87 · July 20, 2019, 4:45am

Searching for it right now. We had this topic a while back.
There two ways. Either you drain packs till all at one voltage, or what probably is more easy you charge them till they have the same voltage. I will link it when I found it.

yelnats8j · July 20, 2019, 4:46am

Ive been looking for it too, couldn’t find it.

legend27 · July 20, 2019, 4:48am

Pretty sure I saw @sofu use some kind of a small converter. Might have bookmarked it…

Andy87 · July 20, 2019, 4:48am

I remember that there was a whole discussion with links to the step down converter etc.

yelnats8j · July 20, 2019, 4:49am

Yeah, I thought I had it book marked

legend27 · July 20, 2019, 4:51am

Got it

yelnats8j · July 20, 2019, 4:52am

There was another thread in more detail also, AliExpress is a bitch to order from too.

hummieee · July 20, 2019, 5:24am

ive used old phone chargers. they do 5v so beware.

Zach · July 20, 2019, 6:56am

Exactly as highlighted above, using tp4056 modules are great for bringing p groups back to a desired voltage for cheap. If you have access to a hobbyy charger like the imax B6 charger, that’s also really great for bringing it up faster
All you need to do is grab the balance leads that connect to the positive of the desired p group, and the negative of the same p group and use them as the groups positive and negative leads

Acido · July 20, 2019, 1:01pm

I tried welding it with boss level and didnt succed, the electrodes should be made out of a different material for spot welding cooper.

Im going to try with kweld soon and hopefully succeed