Recent Posts

Pages: 1 [2] 3 4 ... 10
11
The attached zip folder contains 3d printable files, Fusion360 CAD files and (incomplete) instructions to make a 36V 10S4P electric bicycle battery pack using 18650 batteries that actually measure 18mm dia.  A video and further instructions will follow later as I do a redesign for slightly larger diameter 18650 batteries.

This project is open source.  The files are free to print and you may sell the prints and completed battery packs using this project and it's files.  You MAY NOT sell the files.  All I ask for my efforts is that you include "Wattcycles Tube Battery" in the name and that you mention wattcycles.com as the source.

Update 11/8/16 I added the Fusion360 files so you can edit as you need and added some comments in the instructions based on my own completed battery experience.

Everything in and/or about this project is "use at your own risk."
12
Product Showcase / Re: Teasers of a battery I'm designing.
« Last post by Tom Cole on November 02, 2016, 08:16:03 am »
Further model changes...getting closer!
13
In The News / Enclosed recumbent electric bicycle
« Last post by Tom Cole on October 31, 2016, 02:18:27 pm »
14
Product Showcase / Re: Teasers of a battery I'm designing.
« Last post by Tom Cole on October 30, 2016, 07:37:11 am »
Further prototypes. You can see how they will be wired together and how they fit into a 3"IPS PVC pipe.  The model on the right in the first 2 pics is an earlier prototype.  I am cutting away an area for the BMS as well as reducing the amount of plastic to reduce print time.  This battery will be a 10S4P setup using NCR18650GA cells yielding a 36V 14Ah battery with a 40A max continuous discharge rate.  Total length will be 33cm or a little longer than the length of 5 batteries.

I am designing this using Fusion 360, sending the .stl file to Slic3r 3D and printing on my Prusa i3 MK2 3D printer.
15
Product Showcase / Teasers of a battery I'm designing.
« Last post by Tom Cole on October 24, 2016, 02:24:38 pm »
The idea is to hold groups of 18650 batteries securely inside a tube with a little breathing room between the batteries allowing for wires and such.  This group of 8 will fit into a 2.5" OD piece of tubing.  This is only a prototype.
16
In The News / Bike Lock makes Thieves Puke! Can't make this stuff up!
« Last post by Tom Cole on October 23, 2016, 06:21:59 pm »
17
In The News / First wireless charging station from solar energy for electric bicycles
« Last post by Tom Cole on October 21, 2016, 07:19:36 am »
18
Product Showcase / Luna Cycle
« Last post by Tom Cole on October 08, 2016, 08:19:45 am »
19
Product Showcase / Re: ProdecoTech
« Last post by Tom Cole on September 22, 2016, 05:00:45 pm »
20
Product Showcase / 52V 13.6AH PANASONIC HL LITHIUM BATTERY from Electric Bike Solutions
« Last post by Tom Cole on September 22, 2016, 04:50:05 pm »
Pages: 1 [2] 3 4 ... 10