NESE, the no solder 18650 battery system

This sounds way easy to me. Exact container just fill with batteries of choice heck ya :wink::grin:
Could he pre install or solder BMS?

From what Iā€™ve ve gathered most eskate folks donā€™t want double stack as cleanace is such an issue

Not sure why that is. Even with a double stack enclosure, your hanger is much lower anyways.

Speed bumps and drop downs. Just from my observance singles sell fast doubles dont.
Doesnā€™t mean there isnā€™t a market for them. Iā€™d love one but it ainā€™t gonna work for my 2" drop lol

I would kill for that :smiley:

As long as itā€™s durableā€¦

4 Likes

Ah ok so you flip the batteries halfway through the verticle stack! I was gonna do 10s3p as I was hoping to only use 4 blocks of batteries to save some space but i guess it would only save me board width not on the length of the enclosure is that correct

1 Like

How many in P group (capacity) = board width; How many in S group (voltage) = board length (74.4mm x module count)

1 Like

Question is not very clear? Can you please reframe it?

I am building a 10s4p NESE using 2s4P modules. I went to the link at the top @mishrasubhransu designs and printed a module and lid. I think it came out OK, but I donā€™t have the cells yet to test it. Based on @Agniusm post, I did 0% infill. Two questions:

  1. What are the advantages/disadvantages of @mishrasubhransu designs vs. @Agniusm designs?
  2. Do you use 0% infill for both? Does this to provide some flexibility to the walls or some other reason?

When you select 4 perimeters and ā€œfill small gaps optionā€ it prints solid where most of the strength is needed while leaving other spaces empty to make it lighter.
I donā€™t know how @mishrasubhransu prints but this is the way i propose to do it. It is very flexible with 3D printing

2 Likes

Some fun for a change. Went and found a company who does 3D printing (https://3dcreative.lt/en/). Thought i will order couple modules made by different method 3DP. They came back with pricing on 1x6P module:
SLA, Tough resin - 225 Eur + VAT (272.25EUR) (you can buy on FFF 3D printer for that :slight_smile: )
SLS, Polimidas - 45 Eur + VAT (54.45EUR)
That would make one expensive battery pack :sweat_smile:

2 Likes

12s6p for 3264+ EUR (batteries and BMS not included) sound like a great deal :joy:

1 Like

@mishrasubhransu I am playing around a little bit with mounting methods and wanted to try out tweaking your deck mount a little bit but I only see the .stl files on thingiverse. Any chance you would let me have the native CAD model for the deck mount to play around with?

Itā€™s the one called deck_mount in the image below

2 Likes

Can you post the pic of the module that you are talking about? You can just edit your post. Iā€™ll check.

1 Like

Any comments on my first question? I want to start printing soon and am looking for some input. Thanks.

1 Like

I will try to answer that. Hes model has a curve to follow the boards curvature. He has soldered wires between S groups so hes modules are narrower.

Iā€™m starting to think I want to go the NESE route for my next battery but the what I suppose ā€œstandardā€ layout of modules is not the best form factor for my build.

For a 10s2p, instead of having a slim but long brick using 10 2p modules, could I wire up 4 5p modules where 2 5pā€™s are connected in series then joined in parallel by the other 2 5p modules?, or is this a stupid idea that wonā€™t work?

Image of what Iā€™m trying to do

EDIT: Saw your post on the other forum discussing how it could be a bad mess of wires and poor practice in general. However from a 2p point of view routing balance leads and such doesnā€™t seem like too much added trouble. perhaps finding a different layout with 10 2p modules is better though.

1 Like

To make the NESE setup flexible, is this the best way? Iā€™ve seen braided cable used as well or there is also the tin plated bus bars you can buy with the NESE hardware, but it looks like the 21700 bus bars are longer which would allow a gap between the modules compared tot he 18650 bus bars.

Bus bars are not very flexible. They could be if @Agniusm made a U shaped one that came down and folded under the module.

I played around a lot with the braided cable but settled down on what I currently have.

Ok, do you see any issue then with using 12 AWG silicone wire with ss ring terminals to connect the modules? Also, in looking at your pictures, I donā€™t see what you used to connect the BMS wires.

1 Like