Hey everyone! I bought 26 18650 LG HG2’s and just arrived this morning.
This would be the ideal occasion of using the search button. Plenty of discussions and info on these topics. Good luck!
I can spot weld them for you for a small fee and shipping.
Other wise soldering cels should only be done with a powerful iron 70+Watts. And minimal length of soldering.
Heat ruins the cells, mostly the negative terminal
did you know that 13s will be 54.6v fully charged? Next question, why 13s, why not 12s 50.4v or 10s 42v?
use anti corrosive rosin flux and really high heat (I did 855 F but you could do more, more heat only if you need to decrease contact time)
Would be interested to know what ESC you are going to use with 13S.
Probably Focbox or similar
Doesn’t focbox only do 12S?
No. In fact, it is rated for up to 63v or 15s. But you should always leave some headroom for electronics, and not push it to their abselout maximum.
Thanks everyone for responding. To answer some poeple’s questions, VESC supports up to 60v which is a bit higher than 14s charged(58.8) and I said 48v as the nominal voltage, fully charged would be 54.6v. I just finished soldering them last night(PT). What I did was damping the taps with solder then sandwiching the tab and a short coil of soldering between the 18650 and soldering iron with the damped solder heating the tab and the sandwiched solder melting and sticking to the surface. I did a strength check every time I finished a join and they all seemed fine. Once I finished the parallel joints, the pack because warm for about 20 mins then cooled down. Here’s what the pack looks like, sorry I didn’t take a picture of the joint.
You may want to recheck every battery for a burnt connection/solder joint. One of those batteries may have a sign of puffiness. All wired connections must be spot on down to the xt90. I use shrink tube around the xt pos/neg posts. I prefer ec3 or ec5 depending on the amps/voltage. Good luck
Thanks but I figured out that the problem was the XT-90 anti-spark connector. Just an advice to everyone else, don’t use 12s or higher voltage on anti-spark connectors, you will damage both female and male plugs.
You could also use a propane powered soldering thing idk the name just touch it and its connected
Right on. Be safe ride safe. Happy new year
Don’t worry, I blaze my 90mm’s at 25mph const.
some information in there as well as here