agniusm
1 MW
This summer might bring new modules. 21700 and 20700 has no no solder solution so i am investing in tooling to get this covered. Here are some teaser photos on size comparison between 21700 and 18650:
N.E.S.E. the no solder module
- Thread starter agniusm
- Start date
MJSfoto1956
10 kW
agniusm said:
That certainly would be unique and differentiate you from the crowd.
M
agniusm
1 MW
I will be offering new service. Anyone ordering at www.18650.lt will be able to order custom parts needed for the builds. I will not offer design service but rather printing service. As an example you might need custom enclosure or bracket and you have designed it so to save on shipping and looking at different 3d printing services you could just order everything in one place with your battery kit. Here is an example. Long channel for balance wires and pcm enclosure on 10S pack with 3 wire pcm so its all nice and tidy and protected:
agniusm
1 MW
All files have been updated and uploaded to thingiverse: https://www.thingiverse.com/1865o/designs
Now includes separated module component files
Now includes separated module component files
agniusm
1 MW
Insulation pads are now added to the shop
999zip999
100 TW
Strong Product. You are as good as E.S. gets thank you . As home grown .Thatta boy.
agniusm
1 MW
Thanks, but there are far greater people here than me999zip999 said:
999zip999
100 TW
That's true. But you make it happen.
Doing.
And we're so lucky to have so much knowledge on E.S.
Doing.
And we're so lucky to have so much knowledge on E.S.
What would you estimate that a reasonable continuous amperage per individual cell connection / per module would be with 21700's? I'm imagining that these kinds of cells have a larger surface area and the resulting cell holder will probably take more amps than the 18650 holder..
I may sign up to be your test hamster for the 21700 kits, if you make them in a 4P or 5P configuration. It would solve a big problem i have.
I may sign up to be your test hamster for the 21700 kits, if you make them in a 4P or 5P configuration. It would solve a big problem i have.
agniusm
1 MW
neptronix said:
All the sizes will be up for grabs, 2P through to 8P.
I dont think there are cells to cap my system yet. I have driven vtc5a 6P at ~200A down to flat with minor heating on the tabs(probably mainly cell radiayed) so thats 33A per cell. I would imagine increased tab size will result in 10-15% gain in throughoutput but as i said, i have tested 6P at 200A and i think i could of went 300A continues if i had capable cell. I have sent couple 8P modules to liveforphysics to evaluate, so in time he might be able to torture them harder if time permits.
I have finished my cargo bike and i am pushing 200A peaks. I have 20S7P vtc6 and you can feel them warming up
Awesome 
I am only looking for 60A peak and about 10A per cell peak. Sounds like your connections have things handled.
I look forward to getting some of the first 21700 units from you. Great to hear that you can buy them in any configuration. This solves a big problem for me, as my bike needs an uncommon size pack. And i like the serviceability of the modular battery pack idea ( i liked RC Lipo for the same reason! )
I am only looking for 60A peak and about 10A per cell peak. Sounds like your connections have things handled.
I look forward to getting some of the first 21700 units from you. Great to hear that you can buy them in any configuration. This solves a big problem for me, as my bike needs an uncommon size pack. And i like the serviceability of the modular battery pack idea ( i liked RC Lipo for the same reason! )
Fastassmotors
10 W
- Joined
- Jul 9, 2018
- Messages
- 89
agniusm said:
I am interested in buying something to make a 20s7p
agniusm
1 MW
Just had this email from a customer, thought i'd share:
"Hey buddy. Thought id let you know that your battery holders are explosive safe. Put a battery in backwards a thermal runaway came so quick I barely had time to get it in the protection bag I use but after explosion almost no damage to the unit."
"Very cool though. Well that's our way of saying very interesting. I had my foot on the bag and felt the explosion. Then I looked and the other one was ready to blow so i stomped on the bag ag but it just seemed to release pressure through a hole in the side. Very exciting though. Thank you for building a great product"
"Hey buddy. Thought id let you know that your battery holders are explosive safe. Put a battery in backwards a thermal runaway came so quick I barely had time to get it in the protection bag I use but after explosion almost no damage to the unit."
"Very cool though. Well that's our way of saying very interesting. I had my foot on the bag and felt the explosion. Then I looked and the other one was ready to blow so i stomped on the bag ag but it just seemed to release pressure through a hole in the side. Very exciting though. Thank you for building a great product"
agniusm
1 MW
I want to replicate above "test" so video might follow
okashira
10 kW
Just ordered €242 worth.
Will be very useful for when I want to make some temporary packs and reconfigure later.
Will be very useful for when I want to make some temporary packs and reconfigure later.
agniusm
1 MW
okashira said:
You can make permanent packs as well
agniusm
1 MW
john61ct said:
...in a humanly sense. If its for a lifetime or most of it, we can call it permanent
agniusm
1 MW
Test fitted 21700 NESE module. All looks good. Loaded with samsung 4ah cells comes at 715g.
Now we are offering option of lower profile fasteners. 5.7mm down to 2.7mm to fit in those tight spaces.
Modules will be available for purchase late next week
Now we are offering option of lower profile fasteners. 5.7mm down to 2.7mm to fit in those tight spaces.
Modules will be available for purchase late next week
whereswally606
100 kW
are you going to register 21700.lt ?
quick before some one camps on it.
quick before some one camps on it.
agniusm
1 MW
I'll take it as a joke. No, not gonna make a mess
Its not going to be a big thing i predict. Nice addition but nothing major.
P.S. Or maybe i shoud? :lol:
Its not going to be a big thing i predict. Nice addition but nothing major.
P.S. Or maybe i shoud? :lol:
agniusm
1 MW
So 21700 hardware is here and is available starting today. Complete modules are on demand as i have to build stock and evaluate what products are main-sellers.
On this occasion 10% discount for one month. Use 21700 code when purchasing.
21700 modules will use 21700 series bus bars when mounted back to back (surface with the greatest are) or 18650 series bus bars when mounted side to side (mostly on flat scateboard builds), or combination of the two.
This will eventually be fixed and 21700 modules will use 21700 series bus bars in any orientation.
On this occasion 10% discount for one month. Use 21700 code when purchasing.
21700 modules will use 21700 series bus bars when mounted back to back (surface with the greatest are) or 18650 series bus bars when mounted side to side (mostly on flat scateboard builds), or combination of the two.
This will eventually be fixed and 21700 modules will use 21700 series bus bars in any orientation.
agniusm
1 MW
Couple short videos on assembly and new 21700:
[youtube]22zPvxZxEwM[/youtube]
[youtube]9OPqMC_y9pk[/youtube]
[youtube]22zPvxZxEwM[/youtube]
[youtube]9OPqMC_y9pk[/youtube]
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