10s4p 18650 build using vape sleds

its soldered to the tab on the sled so i can take cells out of the board as easy as you can take cells out of a tv remote.

I wonder how bad the resistance is. Have u had any dropped connections?


Hey. Been reading tons. Great forum and great group!

I’m in the middle of my own build using sleds (8s3p). I bought sleds (2 batteries each) off ebay and soldered each pack with high temp wire. Something to think about (I’m trying it) is to use velcro stripping to hold down batteries across the middle. I’m doing it for each pack of 4 batteries to stop bounce. This still gives me quick and easy access while giving the strength.

I’m building now so I don’t have pics yet. The sleds already have slits on the edges where I can feed the velcro. I’m also mounting the sleds with thin foam gasket material.

Anyway, thought I’d throw in my 2 cents. (First post!)


Anyone else have success with using these? Or a specific sled out there already that’s cheap?

That is my 12s8p sled pack. Also flexible as you can see.

Got it from here https://de.aliexpress.com/item/4x18650-Li-ion-Battery-Storage-Plastic-Clip-Holder-Case-Box-8-Pin-Contact-Black-3-7V/32542313202.html

Also flexible


Wow that’s huge. Do u get any dropped connections or rattling? Do you do anything to keep them in the sleds better or is it just the lid holdi them against the board? Added capacitors? How bad is the resistance?

I’ve been searching for a good sled for a while but not much to go on


1 Like

This is so cool!! Seems a little unnecessary though right?

If they could do one cell deep id be interested. Trying to find the sled witht he greatest compression and thickest tabs

The tabs don’t need to be thick or wide if you solder on some thicker gauge wire or braid on them.

I’ll likely get a 4 cell tray that I’ll need to solder to make them parallel or series and I’d like that thick for less resistance but I’m thinking thick tabs would be good for compression strength. Don’t want to lose connections. Will like tape it all down too. Would like something like this: http://www.lightinthebox.com/aa-to-aaa-battery-adapter_p505332.html?pos=ultimately_buy_12&prm=

But will likely get these: http://www.lightinthebox.com/diy-4-slot-18650-battery-holder-with-pins-black_p1697478.html?currency=USD&litb_from=paid_adwords_shopping&utm_source=google_shopping&utm_medium=cpc&adword_mt=&adword_ct=84187023794&adword_kw=&adword_pos=1o5&adword_pl=&adword_net=g&adword_tar=&adw_src_id=1810908567_301578074_21687104834_pla-214570461434&gclid=CM6u4dWglc8CFYFofgodLWwCIA

I was thinking you can get some dual lock Velcro (industrial strength Velcro, not your typical fuzzy Velcro) and line each cell channel with a small bit of it (maybe 5mm x 20mm) and the same on the battery to keep it in place.

I lined the bottom of my enclosure with this stuff and my components are rock solid in there. The only downside is that it’s a bit pricey.

Link for those interested: https://www.amazon.com/gp/aw/d/B007OXK2L8/ref=mp_s_a_1_7?ie=UTF8&qid=1474078542&sr=8-7&pi=AC_SX236_SY340_FMwebp_QL65&keywords=dual+lock&dpPl=1&dpID=51k%2BVeq-1UL&ref=plSrch

Beware when buying dual lock, there are ones with a straight/parallel Velcro pattern which absolutely stuck at holding things together. The dual lock with the wavy pattern is the one you want.

Humm wonder if the sled and cell with Velcro would be good enough

Wonder if richochetting rocks will damage 18650. Lipos definately I’ve found

just get a piece of poster board to cover it :stuck_out_tongue:.

With those sleds you linked, i think you can get a wide nickel/brass buss bar and glue it to the bottom of the sled and solder the bottom bit to it. Should work well!

Let me know if you want help with this project, id be happy to lend a hand

sThanks. The cells are ordered and I guess I’ll get the 4 cell sleds I linked. I feel it’s pretty fail-proof using these as apposed to soldering. Come round and see it in a week whe the parts are in jinra. I’ll probabl use copper sheeting under the sleds as u describe then glue the sleds down with a soft rubber so they can flex, maybe the Velcro as u say and a thin lid of fiberglass.


Is what I want. They don’t show one for 18650 but I’m going to call Monday to make sure

Hours later and having read this thread again I’m wanting to just use magnets and copper sheeting and some anti corrosive paste. https://endless-sphere.com/forums/viewtopic.php?f=14&t=60517&start=25

1 Like

How about getting the copper strips plated using silver or rhodium? Then you will not have to worry about oxidisation of the contacts as much


Good idea. Think I’ll try some of this simple solution.

The plan is batteries with copper sheeting connections(plated with silver) held in place with magnets, and duct tape to hold it all.

1 Like

I have been searching for days for a way to connect 18650 cells without needing a spotwelder. Yesterday I found the battery holders with pins and today I stumbled upon this treasure (refuring to the thread).

H3rose what’s ur plan? I’m all in. Doing (50) 30q cells which are on route, (100) 3/8x1/8" n50 magnets, and electrically conductive paste, but not sure on the ampacity of the nickel or copper strip and waiting on that. Likey will do 12mil copper.