JLCPCB Prototype for $2(Any Color): https://jlcpcb.com
My biggest 18650 lithium battery pack using the Vruzend 1.6 system. Assembly can be very modular if you get all your dovetails and slots in the right place! I made a little bolt-holder jig to facilitate tightening of the barrel bolts. BMS and balancer boards to be added soon.
My biggest 18650 lithium battery pack using the Vruzend 1.6 system. Assembly can be very modular if you get all your dovetails and slots in the right place! I made a little bolt-holder jig to facilitate tightening of the barrel bolts. BMS and balancer boards to be added soon.
What are the dimensions for the plastic
battery ends
Great job
Julian would you be able to test those nickel strips for their max current?
Hi Julian – thanks for posting this. Are you able to share which posts go to which pad on the BMS? I followed all the way to that point.
Fusing??
what size are the barrel bolts…my friend has a version 1.5 but i find it to be useless unless i can get a barrel bolt
What is the point of a cheapo charging device without balancing and no temp monitoring?
I have 2 Banks of 4s that I wish to connect together to double my capacity of an individual bank.
I would have thought if I just put them in parallel with a nickel strip at each end ( joining the 2 negatives and the 2 positives)
Why do you need to use a bunch more nickel strips paralling the centre cells ?
I mean , if I had 2 AGM 6 Volt batteries , and put them in parallel , each AGM battery is made up of 3 individual cells , but the individual cells are not , and cannot be put in parallel , yet the capacity of the overall system is doubled with seemingly no issues.
Do not get Vruzend 1.6 regardless of the price! I ruined 7 perfectly good 18650s with it trying to make a 4s8p pack. Wait for more improvements or do the right thing – spot weld your cells1. When you push the cells into the caps it's a tight fit so you compress the air inside and like a spring the caps come ever so slightly away from the contacts – a small hole in each one would relieve this and make assembly/disassembly easier. 2 Because of #1 there isn't much tactile feedback when pressing the caps over the cells. It shouldn't be possible to over insert the cells. I ruined 7 perfectly good 18650s
because of this. There should be a molded in stop inside the cap to prevent over insertion.
If the MOSFETs are going to get warm, would it be better to not glue them to the sides of the cells?
Stop Press. Julian invents the flat blade screwdriver. 🙂
Love all your videos with batteries and super caps. I recently got the vruzend 2,1 kit it was fairly expensive but fun to play with. Screwing the barrel bolts are still a problem in the 2,1 kit but I adopted you saw blade cut out method which works perfectly
Uhuugh, slotted-head bolts …why!!
Socket-head bolts would have been soooo much better for this sort of application ….or literally any other kind of head.