New em3ev batterý pack

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Electrick   10 mW

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New em3ev batterý pack

Post by Electrick » Nov 12 2017 10:22am

Hello all,
Ordered a few batteries from em3ev and Joseph kindly offered to ship the hard case option.
Looking forward to receiving these, looks like a game changer.
The bluetooth ready bms is amazing. Will post a review if enough are curious.

Tats   1 kW

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Re: New em3ev batterý pack

Post by Tats » Nov 14 2017 10:43pm

Yes pls - sub'd

Interested to know how you attach it

spiros   10 W

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Re: New em3ev batterý pack

Post by spiros » Nov 15 2017 2:03am

I'm curious :D

Electrick   10 mW

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Re: New em3ev batterý pack

Post by Electrick » Nov 16 2017 7:48am

Very curious myself.....Sounds like they're working on the fittings, may be ready in a few weeks.
Made sure the bags were still included, mind you! The smart bms looks interesting for sure.
The app seems intuitive, gives you group voltage, temperature and charge cycles.
Of course I got the 'no battery detected' message..No wonder, its 2000 kilometers away!
Has a power switch and side charge port.
Will have more details plus pictures soon.

SlowCo   10 kW

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Re: New em3ev batterý pack

Post by SlowCo » Nov 16 2017 8:37am

Nice.
Would love to read a review (with photo's please) of the battery once you have it and start to use it.

LewTwo   100 kW

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Re: New em3ev batterý pack

Post by LewTwo » Nov 18 2017 8:47am

Stupid question: What is new about it.
I looked at their site and did not see anything .. but maybe I missed something :?:
Last edited by LewTwo on Nov 18 2017 4:47pm, edited 1 time in total.
The more I learn the more obvious the immensity of my ignorance becomes.
Weight Wennie E-Bike https://endless-sphere.com/forums/viewt ... 3#p1173723
Shaft Drive Grocery Getter https://endless-sphere.com/forums/viewt ... =6&t=90718
...and thanks to Justin!

Electrick   10 mW

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Re: New em3ev batterý pack

Post by Electrick » Nov 18 2017 9:29am

Just received the batteries, they look awesome!
In the interest of cost and reliability I opted for the 33g cells.
Not rated for high amps, but perfect for my needs.
18.6 ah is plenty. The form and fit factor on the other hand, was huge!

The pictures tell the story about that.

Electrick   10 mW

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Re: New em3ev batterý pack

Post by Electrick » Nov 20 2017 4:09pm

20171120_113627-min-816x612.jpg
20171120_113627-min-816x612.jpg (95.32 KiB) Viewed 3053 times
The rain finally let up so was able to get some photos.
If I can rig a mounting solution, this solves battery issues on at least 2 builds!
Attachments
20171120_113429-min-1632x1224.jpg
20171120_112920-min-1305x979.jpg

ricsha   1 mW

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Re: New em3ev batterý pack

Post by ricsha » Nov 20 2017 4:28pm

These are the small triangle packs right?

Electrick   10 mW

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Re: New em3ev batterý pack

Post by Electrick » Nov 20 2017 5:34pm

Yes, they are..14s6p33g. 18.8 ah. The packs look very robust and well sealed.
Came with bags but they only have the one size. Too big for these builds.
Now to figure a way to mount them! Will post when that's done.

LewTwo   100 kW

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Re: New em3ev batterý pack

Post by LewTwo » Nov 21 2017 5:06am

EM3EV's new web site leaves a lot to be desired. Here are two quotes about their triangle battery:

"Regardless of the cell type used, the dimensions of the pack are unchanged."
... searching for dimensions ...
"Dimensions: ~75mm thick. 275mm long, 170mm high (detailed dimensions shown in additional images)."

The thing is that there are no additional images and the ones that they do have are suitable only for postage stamps.
I hope the QC on their products is better than the QC on their web site.


Reference:
https://em3ev.com/shop/50v-14s6p-small- ... zontalTab1
The more I learn the more obvious the immensity of my ignorance becomes.
Weight Wennie E-Bike https://endless-sphere.com/forums/viewt ... 3#p1173723
Shaft Drive Grocery Getter https://endless-sphere.com/forums/viewt ... =6&t=90718
...and thanks to Justin!

ricsha   1 mW

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Re: New em3ev batterý pack

Post by ricsha » Nov 22 2017 11:53am

Electrick wrote:
Nov 20 2017 4:09pm
If I can rig a mounting solution, this solves battery issues on at least 2 builds!
What are your plans for mounting them without the soft bag?

LewTwo   100 kW

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Re: New em3ev batterý pack

Post by LewTwo » Nov 22 2017 12:28pm

What is the exterior material (I am guessing acrylic sheet)?
Can you add dimensions to your first picture?
Last edited by LewTwo on Nov 22 2017 4:39pm, edited 1 time in total.
The more I learn the more obvious the immensity of my ignorance becomes.
Weight Wennie E-Bike https://endless-sphere.com/forums/viewt ... 3#p1173723
Shaft Drive Grocery Getter https://endless-sphere.com/forums/viewt ... =6&t=90718
...and thanks to Justin!

Electrick   10 mW

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Re: New em3ev batterý pack

Post by Electrick » Nov 22 2017 3:20pm

@LewTwo... yes the case looks like an acrylic plastic 5mm thick. 80mm wide.
So, a little bigger than the shrinkwrapped unit. Looks skookum!
Yes, I spent 30 seconds looking for those other pictures on his site too..🙃
@Ricsha..Paul from em3ev is working on a mounting solution. No idea what that might look like, sounds
like it'll be ready soon. I'm planning to fit a 3.5" aluminum channel on the bottom with clamps on the top, utilizing the existing screw holes.
Attachments
14s6p Hardcase Triangle Battery Pack Dimensions.jpg
14s6p Hardcase Triangle Battery Pack Dimensions.jpg (25.48 KiB) Viewed 3015 times

LewTwo   100 kW

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Re: New em3ev batterý pack

Post by LewTwo » Nov 22 2017 4:35pm

Thank thee :D
The more I learn the more obvious the immensity of my ignorance becomes.
Weight Wennie E-Bike https://endless-sphere.com/forums/viewt ... 3#p1173723
Shaft Drive Grocery Getter https://endless-sphere.com/forums/viewt ... =6&t=90718
...and thanks to Justin!

Electrick   10 mW

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Re: New em3ev batterý pack

Post by Electrick » Nov 22 2017 6:11pm

The quality looks good, only issue I have is the plug for the charge port is not tight enough.
Easily fixed by getting a bigger one. Still trying to figure out how the app works. No documentation
or help button! Sending an email to Joseph tonight for more info. It recognizes the bms, but all
values are zero except battery temp. It reads -371.7 degrees! lol
Helium supercooling? Not sure... Anyways, here's a pic with the wrap removed
20171122_143010-1836x1836.jpg

LewTwo   100 kW

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Re: New em3ev batterý pack

Post by LewTwo » Nov 23 2017 9:00am

I'm planning to fit a 3.5" aluminum channel on the bottom with clamps on the top, utilizing the existing screw holes.
You might want to give that some more thought. Acrylic is not a material that stands up to fatigue. It tends to get brittle and crack. Best case is it rips out the threads. Worse case is that it tears out the material around the bolt holes. The channel is a good idea (with a neoprene lining-- i.e. old inner tube). I would try to figure out a way to clamp it into position preferably something along all three sides.
The more I learn the more obvious the immensity of my ignorance becomes.
Weight Wennie E-Bike https://endless-sphere.com/forums/viewt ... 3#p1173723
Shaft Drive Grocery Getter https://endless-sphere.com/forums/viewt ... =6&t=90718
...and thanks to Justin!

Electrick   10 mW

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Re: New em3ev batterý pack

Post by Electrick » Nov 23 2017 9:25am

Hi, You raise some good points. Thank you. I had thought since the main load is carried
by the downtube a top clamp would work. Still planning, any input is welcomed!
You're right, even though most force is down...a lot of strain is put on the top mount.

Only idea I have right now is to spread it out using more of the screw holes. Maybe two clamps using three
screws each. Or one full length clamp.
We'll see how it goes.

LewTwo   100 kW

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Re: New em3ev batterý pack

Post by LewTwo » Nov 23 2017 9:49am

It is not the strain. Acrylic has adequate strength. The problem is the back and forth. Think of bending repeatedly bending a coat hanger in order to break it. Acrylic has the same problem though not nearly as malleable (at normal temperatures).

An ideal solution would be to capture all three corners with something like 3D printed PLA clamps.
The more I learn the more obvious the immensity of my ignorance becomes.
Weight Wennie E-Bike https://endless-sphere.com/forums/viewt ... 3#p1173723
Shaft Drive Grocery Getter https://endless-sphere.com/forums/viewt ... =6&t=90718
...and thanks to Justin!

Electrick   10 mW

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Joined: Oct 07 2017 7:08pm

Re: New em3ev batterý pack

Post by Electrick » Nov 23 2017 10:02am

Have been working on a cam actuated clamp idea. It looks promising for sure.
Will provide clamping force without affecting structural integrity.

Hmmm..I guess it's been done. lol
Skewer clamps, seat post clamps....Would provide support without compromising structure.

Electrick   10 mW

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Re: New em3ev batterý pack

Post by Electrick » Nov 24 2017 8:16am

LewTwo wrote:
Nov 23 2017 9:49am
It is not the strain. Acrylic has adequate strength. The problem is the back and forth. Think of bending repeatedly bending a coat hanger in order to break it. Acrylic has the same problem though not nearly as malleable (at normal temperatures).

An ideal solution would be to capture all three corners with something like 3D printed PLA clamps.
Once I am done with the clamps and rail, there will be little to no movement.
Using butyl rubber strips on the channel. Good bounce, Awesome adhesion.

Will post updates on fit and function.

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pwd   100 W

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Re: New em3ev batterý pack

Post by pwd » Nov 27 2017 4:53pm

Thanks for posting about this battery. I'm anxious to see how it performs, I'm pretty sure my next pack will be one of these.
Current Build:
Rocky Mountain Element
Magic Pie 4 front + Leafmotor 1500 rear w/ WCEC 18fet
em3ev 14S5P 30Q + 14S6P 25R pack

Old Build:
GIANT ATX 980 w/ Cycle Analyst v2.25
Golden Motor Magic Pie (internal controller) X2
14S3P 15aH: 6X 6S 5000mAh + 3X 2S 5000mAh LiPo packs
My thread: http://endless-sphere.com/forums/viewto ... 5&p=693208

Electrick   10 mW

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Re: New em3ev batterý pack

Post by Electrick » Nov 27 2017 10:45pm

20171127_193324-1224x1224.jpg
20171127_193324-1224x1224.jpg (223.54 KiB) Viewed 1303 times
Have the bms data now. Should have been obvious that the password was the last 4 digits of the serial #!
..... Looks good, with 4 screens. Nice to get rid of some wires!
A few spelling errors but I don't care if the data is correct.

Next, get it mounted...
Attachments
20171127_193416-1836x1836.jpg

Triketech   1 kW

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Re: New em3ev batterý pack

Post by Triketech » Nov 27 2017 11:48pm

Image

These might work. I use them on trikes.

https://www.mcmaster.com/#shaft-collars/=1ag2pgn

daveh   1 µW

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Re: New em3ev batterý pack

Post by daveh » Nov 30 2017 4:20am

Hi, Electrick

I have ordered the same battery as you and are interested to know how long it took to come and if it arrived by Australia post.
Also interested to know how you are going with it and how its preforming,

Thanks
David

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