Search found 357 matches

by johnnyz
May 08 2021 10:34am
Forum: Items for Sale - New
Topic: Prismatic lifePo4 cells 50ah Sale
Replies: 14
Views: 388

Re: Prismatic lifePo4 cells 50ah Sale

Thanks for the post...ya that was after a 35 km ride I believe...just wanted to see where they sat. Right now they are all at about 3.2 volts...
by johnnyz
May 07 2021 6:27am
Forum: EScooters/EMotorcycles
Topic: Fechter's Sur-ron Modifications
Replies: 19
Views: 8580

Re: Fechter's Sur-ron Modifications

My supplier tells me that chinese BAK cells rated at 2900 mah are the best they make and 10 amp capable. I ordered 200 and a 80 amp BMS so ill try it out and see.
by johnnyz
May 07 2021 6:25am
Forum: Items for Sale - New
Topic: Prismatic lifePo4 cells 50ah Sale
Replies: 14
Views: 388

Re: Prismatic lifePo4 cells 50ah Sale

I forgot to mention, after 4 cycles, I tested the voltages of all the cells to see how well they were playing together...here it is..I think its pretty good....
rsz_volts.jpg
rsz_volts.jpg (1.8 MiB) Viewed 111 times
by johnnyz
May 06 2021 1:23pm
Forum: EScooters/EMotorcycles
Topic: Fechter's Sur-ron Modifications
Replies: 19
Views: 8580

Re: Fechter's Sur-ron Modifications

Im waiting on mine...I have a question about the extra Battery you made..is it the same Ah?...I will be making another 60 volt 30 ah pack run in parallel, to get a little extra range.
by johnnyz
May 06 2021 9:56am
Forum: Items for Sale - New
Topic: Prismatic lifePo4 cells 50ah Sale
Replies: 14
Views: 388

Re: Prismatic lifePo4 cells 50ah Sale

Thanks for the tip..ya they are about the same price point as the BMS units I am getting with the cells...and they look like some nice units...
by johnnyz
May 06 2021 6:10am
Forum: Items for Sale - New
Topic: Prismatic lifePo4 cells 50ah Sale
Replies: 14
Views: 388

Re: Prismatic lifePo4 cells 50ah Sale

Im setting up the order today, along with some BMS units. Ive had a challenge from the owner of a golf course ..he wants me to build a pack for one of their golf carts (48 volts) and if its better than lead acid after testing (chuckle chuckle), then he wants the remaining carts done with these cells...
by johnnyz
May 05 2021 2:04pm
Forum: Items for Sale - New
Topic: Prismatic lifePo4 cells 50ah Sale
Replies: 14
Views: 388

Re: Prismatic lifePo4 cells 50ah Sale

When I asked for a data sheet it was in Chinese...I asked her to send something in English and she sent me this...not exactly complete, but during my tests, they were correct with respect to capacity. data.jpg They did sag a bit more than I thought however, but like the headway cells I used, this ch...
by johnnyz
May 05 2021 6:28am
Forum: Items for Sale - New
Topic: Prismatic lifePo4 cells 50ah Sale
Replies: 14
Views: 388

Re: Prismatic lifePo4 cells 50ah Sale

Not sure about the location thing..Im from Glencoe Ontario. Thats about 40 Mins from London. As for people buying these, will sell to whomever ...shipping is up to the buyer.. ;)
by johnnyz
May 04 2021 9:23am
Forum: Items for Sale - New
Topic: Prismatic lifePo4 cells 50ah Sale
Replies: 14
Views: 388

Prismatic lifePo4 cells 50ah Sale

Hey there Its been a while since ive been on here...I purchased a test set of prismatic LifePo4 cells, 50 ah to test on a test bike (Emmo DX) cell3.jpg , cell2.jpg , The cells measure about 165 mm tall by 135 mm wide and about 31 mm thick. I wanted to test these on an ebike so I built a 72 volt pack...
by johnnyz
Jul 04 2019 9:44am
Forum: Motor Technology
Topic: Mid drive vs Hub Motor for 10000 watt project
Replies: 95
Views: 13072

Re: Mid drive vs Hub Motor for 10000 watt project

Been so busy with everything...have not had a chance to post...the bike is done and have had to limit the speed for compliance. I made the bike because I had someone who wanted it for the street (he will licence it). I will be posting results, pictures, mileage,etc very shortly...the bike is beyond ...
by johnnyz
Jan 12 2019 4:04pm
Forum: EBike Build Threads
Topic: Big 100 Volt 54 ah Battery build
Replies: 21
Views: 2705

Re: Big 100 Volt 54 ah Battery build

Ok...well the test results are in.... Both the soldered cell (new but sitting soldered for 8 months) and the untouched cell(also new) were charged by my Imax to 4.2 volts and left to rest 30 mins. The soldered cell came in at 4.157 Volts The normal cell came in at 4.155 Volts I discharged to 3 volts...
by johnnyz
Jan 10 2019 10:57am
Forum: EBike Build Threads
Topic: Big 100 Volt 54 ah Battery build
Replies: 21
Views: 2705

Re: Big 100 Volt 54 ah Battery build

Ok...as a sidelight and I didnt really want to focus on this but what the heck... I have 2 identical cells..Panasonic 18650PF cells. They are both 8 months old, however, one has been badly soldered to a bunch of cells for all this time...the bottom has suffered some corrosion, as it appeared the per...
by johnnyz
Jan 10 2019 9:54am
Forum: EBike Build Threads
Topic: Big 100 Volt 54 ah Battery build
Replies: 21
Views: 2705

Re: Big 100 Volt 54 ah Battery build

Nice soldering job and a gun like shown in the video solders so fast the metal on the positive side doesnt have a chance to transfer the heat to the but gluing cells together I have found invites potential problems...I had a pack I did in this manner and because they moved around slightly 2 parts of...
by johnnyz
Jan 10 2019 9:05am
Forum: EBike Build Threads
Topic: Big 100 Volt 54 ah Battery build
Replies: 21
Views: 2705

Re: Big 100 Volt 54 ah Battery build

Thanks for the response. Yeah the only pitting was at the end or the tip...the 2 parts that are joined once they are put together are fine..however, you cant put a no.1 wire on an anderson connector ...I will be using these, nut and bolting them together and 3d printing a nice cover.. rsz_img_201901...
by johnnyz
Jan 09 2019 10:15pm
Forum: EBike Build Threads
Topic: Big 100 Volt 54 ah Battery build
Replies: 21
Views: 2705

Re: Big 100 Volt 54 ah Battery build

Thanks for the response and I take no offence..truth is truth, and if I learn something great..however Ive put together 25 packs and I have learned something in that time.. Done properly soldering to cells does not damage them either in performance or capacity (there are numerous studies proving thi...
by johnnyz
Jan 09 2019 9:04pm
Forum: EBike Build Threads
Topic: Big 100 Volt 54 ah Battery build
Replies: 21
Views: 2705

Re: Big 100 Volt 54 ah Battery build

How is the pack suspect from the start?...and use a tab welder using what exactly?..using nickle strip??..and you think that can take 250 amps???...It takes less than a sec to solder the 18 g wire unto the cell, and does no damage whatsoever.The other pack I made worked great, just didnt have the ra...
by johnnyz
Jan 09 2019 3:14pm
Forum: EBike Build Threads
Topic: Big 100 Volt 54 ah Battery build
Replies: 21
Views: 2705

Big 100 Volt 54 ah Battery build

Have not been on here in a long while...thought I would begin posting my new battery build, trying to learn on my previous build of last year. rsz_20180427_154812.jpg I modified an Emmo Zone for performance. I replaced the motor with a QS Motor 16 inch 6000 watt V3 , which has proven to be reliable ...
by johnnyz
Feb 26 2018 12:00pm
Forum: EBike Technical
Topic: Kelly Controller RS232 to TTL cable
Replies: 3
Views: 767

Re: Kelly Controller RS232 to TTL cable

I cant believe no one knows how to hook this ttl 4 pin connector to a usb ... First stop is always the manufacturer - not a public forum. Same amount of typing to get authoritative information. That said - I have never programmed a Kelly, but my guess is that you need this adapter to mate that stan...
by johnnyz
Feb 26 2018 9:03am
Forum: EBike Technical
Topic: Kelly Controller RS232 to TTL cable
Replies: 3
Views: 767

Re: Kelly Controller RS232 to TTL cable

wow...I am suprised..Damon sent me the missing cable but sent it EMS which is ridiculous considering it was their mistake in the first place and could take 3 weeks...I cant believe no one knows how to hook this ttl 4 pin connector to a usb ...


John
by johnnyz
Feb 24 2018 8:37am
Forum: EBike Technical
Topic: Kelly Controller RS232 to TTL cable
Replies: 3
Views: 767

Kelly Controller RS232 to TTL cable

Hi there Received my Kelly KLS 8430 controller but only a RS323 to USB cable and nothing to go between this and the TTL 4 pin cable out of the controller....Does anyone know if there is a generic cable that will work or does anyone have one I can buy so I can get this up and running? rs232.jpg ttl.j...
by johnnyz
Feb 23 2018 8:57am
Forum: Motor Technology
Topic: Mid drive vs Hub Motor for 10000 watt project
Replies: 95
Views: 13072

Re: Mid drive vs Hub Motor for 10000 watt project

I would love to see the inside of that thing. And see the difference between this and a standard chinese motor. Its big and heavy, I would say 20 pounds more than the qsmotor that was on it..here is what the side looks like...although it is offset, its a full 3 inches wide vs 2.1 inch for the old m...
by johnnyz
Feb 22 2018 10:07pm
Forum: Motor Technology
Topic: Mid drive vs Hub Motor for 10000 watt project
Replies: 95
Views: 13072

Re: Mid drive vs Hub Motor for 10000 watt project

the middle wire should be the temp probe. you can plug the negative and the temp wire directly into a multimeter that has a ktype sensor input. if you get weird readings you have the polarity reversed. Hey ...thanks for the response..yup you are right..Damon contacted me and confirmed that this is ...
by johnnyz
Feb 22 2018 11:49am
Forum: Motor Technology
Topic: Mid drive vs Hub Motor for 10000 watt project
Replies: 95
Views: 13072

Re: Mid drive vs Hub Motor for 10000 watt project

The motor is here....wondering if anyone can tell me (as Damon isnt answering my emails)...if this added wire coming from the hall sensor plug is the temp sensor in the motor?..it also has an extra hall set..I did ask them to install one and they said they would, but then again I asked for a disk br...
by johnnyz
Feb 21 2018 8:32am
Forum: Motor Technology
Topic: Mid drive vs Hub Motor for 10000 watt project
Replies: 95
Views: 13072

Re: Mid drive vs Hub Motor for 10000 watt project

Well....the Controller, Contactor and cable for communication port for controller to computer arrived.. 20180221_080020.jpg However, a number of things are wrong already and this really really annoys me.. First, there is no converter to tie in the RS232/USB plug they sent to the Kelly Controller. 20...
by johnnyz
Feb 15 2018 7:35am
Forum: Items for Sale - New
Topic: QSMOTOR,0.5-12kW Electric Hub Motor & Mid Drive Motor Manufacture China
Replies: 1418
Views: 309020

Re: QS MOTOR,0.5-14kW Electric Hub Motor Manufacture China

maybe it is related to: Chinese New Year 2018 started at Friday, February 16th. Talking into account that they manufacture motor for few weeks. Maybe they did not ship it before their New Year or do you have tracking which you should have. CN do not work during holidays, not like EU. Yeah its funny...