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Visually seems okay, have you checked the JST connector with a volt meter? Every single pin in order
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yep difference between every pin is 3.5 and a bit v
looks all good otherwise
the things way the bit i wrote the + on got sort of covered and looked like a - thats the reason i soldered to that
i know i should have triple checked
thanks man
also guess i got 2 llt 12s bms that have some issue both connect but give weird readings for the battery if anyone wants for free happy to ship
thanks @ZachTetra i soldered b- again and it seems to work now
shaked everything round and nothing happened so i assume the issue before was resolved
difference between the groups is like 10mv which i believe isnt way to much
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Make sure it charges too
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will do
gotta actually order a charge port though unless i deside to use an xt60 which i might just do
also for protection is something like this enough?
No no.
You made this especially for me…
I really struggle with this part.
Always looks like garbage.
What solder are you using? Does it have rosin core?
I almost feel I have too much flux flying around sometimes…
What iron is that? How hot did you set I at.
@ZachTetra
Yours make me sick as well… super clean.
Here is a different pack. I liked the look of the balls to start with…but the end results with 14awg were not pretty…
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Thank you! 
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Whoa…that stuff is extremely corrosive and is not meant for electronics use! Make sure all residue is removed before sealing up the pack, which will be tough to do.
What do your joints look like after a few months? Any corrosion under the wire insulation, stuff like that?
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I use a gew different solders and they all have a rosin core
https://www.amazon.com/dp/B005T74XSY?ref=ppx_pop_mob_ap_share
If I need alot of solder for things like series connections
And this
https://www.amazon.com/dp/B0149K4JTY?ref=ppx_pop_mob_ap_share
For just about everything else
I use a Weller soldering station
And also one of these
https://www.amazon.com/dp/B086DTV28M?ref=ppx_pop_mob_ap_share
Its enexpensive and works very well
As far as heat…turn it all the way up. Done
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Kester is the good stuff, I’m already running low though, that stuff is costly
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Can someone please tell me which pin on the lp20 (lacroix charger) is positive.
Sweet.
Thanks bro.
I appreciate the info.
I am using kester as well.
This roll.
On my previous packs I just used a TS100
On this last one I used this behemoth for the series connections…
80 watt weller that goes to 900f
I’m still pondering one of these stations…
Dropped a cell and there is a small dent now would you guys still use it?
Yes.
But we don’t know the internal condition of your cell and can’t say if it’s okay for you to still use it. It has to be your call.
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If it was my personal pack and not a customers, and the dent was really small I would use it assuming I dont have an extra cell.
The same thing happened a few times to me as well then I put a piece of carpet below the desk and problem solved 
Also next time just buy one or two cells extra every time
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Thank you for you answer. Is there any way to test it? I have this charger that displays some info but dont know how reliable that is.
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Thanks, that’s a good idea knowing how clumsy I am, is should use a carpet as well.
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You could fully charge it, let it rest for at least an hour, read its voltage, and then check the voltage at least a week later. If the voltage has dropped more than a few millivolts that can indicate it is damaged.
I don’t think that charger shows voltage though. Do you have a multimeter?
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