Search found 391 matches

by garolittle
Jan 18 2020 7:23pm
Forum: Items for Sale - Used
Topic: Nissan Leaf Modules 58 aH
Replies: 22
Views: 2775

Re: Nissan Leaf Modules 58 aH

$600. Need to raise some cash. Thanks.
by garolittle
Jan 11 2020 10:08pm
Forum: Items for Sale - Used
Topic: Nissan Leaf Modules 58 aH
Replies: 22
Views: 2775

Re: Nissan Leaf Modules 58 aH

These are great cells. If you use the entire metal casing, the module holds four cells in a 2S / 2P configuration. They can easily be split into individual cells. There is more info about these cells here: https://www.electricbike.com/yuba-nissan-cells/ https://i0.wp.com/www.electricbike.com/wp-con...
by garolittle
Jan 11 2020 10:07pm
Forum: Items for Sale - Used
Topic: Nissan Leaf Modules 58 aH
Replies: 22
Views: 2775

Re: Nissan Leaf Modules 58 aH

According to my CA, my pack ranged from 0.025-0.030 ohms impedance when first installed. It now ranges from 0.035-0.040 ohms. If the OP's pack has been stored at moderate temperatures, and 30-70% charge, it should retain most of it original capacity. Stored in GA and FL since purchased so relativel...
by garolittle
Jan 11 2020 8:09am
Forum: Items for Sale - Used
Topic: Nissan Leaf Modules 58 aH
Replies: 22
Views: 2775

Re: Nissan Leaf Modules 58 aH

Hello everyone. I apologize for the slow response. The last message is correct however we have not used these modules since we purchased them. Maximum voltage is 58.8 V. Also, the cells are very well-balanced. We used an Orion Jr. BMS to ensure proper balancing. Text me at 706-513-3367 if you have a...
by garolittle
Jan 10 2020 4:44pm
Forum: Items for Sale - Used
Topic: Nissan Leaf Modules 58 aH
Replies: 22
Views: 2775

Nissan Leaf Modules 58 aH

$650 for everything. 58Ah Nissan Leaf Battery Modules to include end brackets, threaded rods, bolts, nuts, set of base/cover orange protectors, copper bars. Modules were purchased from reputable vendor and were intended for prototype go kart but we did not use them. Batteries have been balanced with...
by garolittle
Jan 07 2020 11:08pm
Forum: Items for Sale - New
Topic: $675 for complete set - Motenergy PMDC Motor, Alltrax Controller, Gigavac Contractor, E-Stop Switch
Replies: 2
Views: 1307

$675 for complete set - Motenergy PMDC Motor, Alltrax Controller, Gigavac Contractor, E-Stop Switch

$650 for the complete set and free shipping within continental USA. We are located in Augusta, GA. MOTOR: Motenergy ME0708 Permanent Magnet Direct Current (DC) Motor, 48V, 8 hp cont, 15 hp pk (300 amps max/100 amps continuous) CONTROLLER: Alltrax SR-48300 48V/300A. The charge controller would go in ...
by garolittle
Nov 18 2019 4:56pm
Forum: Battery Technology
Topic: Internal Resistance for pack of LG HG2 cells
Replies: 25
Views: 1841

Re: Internal Resistance for pack of LG HG2 cells

What does the BMS use those data for? I'm surprised it doesn't read them directly in order to tell the user, rather than the other way around. Do they update the "library" as new cells come on the market? Checking with the manufacturer now regarding the first question. I agree that it should be eas...
by garolittle
Nov 18 2019 1:33pm
Forum: Battery Technology
Topic: Internal Resistance for pack of LG HG2 cells
Replies: 25
Views: 1841

Re: Internal Resistance for pack of LG HG2 cells

Ok. Part of the mystery was solved. When I use the OrionJr. BMS “Setup Wizard”, I have to select a battery type. Since the LG HG2 was not listed, I chose the other LG cell. That is what caused the “2.81” reading for Internal Resistance”. Last night, I changed it to the Panasonic cell and the reading...
by garolittle
Nov 16 2019 4:23pm
Forum: Battery Technology
Topic: Internal Resistance for pack of LG HG2 cells
Replies: 25
Views: 1841

Re: Internal Resistance for pack of LG HG2 cells

john61ct wrote:
Nov 16 2019 3:59pm


But phase changing sure takes things to another level.

We strongly recommend AllCell Technologies. Great product and excellent customer service. 8)
by garolittle
Nov 16 2019 3:55pm
Forum: Battery Technology
Topic: Internal Resistance for pack of LG HG2 cells
Replies: 25
Views: 1841

Re: Internal Resistance for pack of LG HG2 cells

Got an idea. If you can measure charging current or if you know the charging current, you can calculate internal resistance from the charging current value and voltage difference on the cell. You just need to have DMM with resolution mV or better 0,1 mV and connect to any cell´s balance wiring. So ...
by garolittle
Nov 16 2019 2:25pm
Forum: Battery Technology
Topic: Internal Resistance for pack of LG HG2 cells
Replies: 25
Views: 1841

Re: Internal Resistance for pack of LG HG2 cells

john61ct wrote:
Nov 15 2019 12:16pm
can you link to where you bought that pack?
www.allcelltech.com.
by garolittle
Nov 15 2019 4:00pm
Forum: Battery Technology
Topic: Internal Resistance for pack of LG HG2 cells
Replies: 25
Views: 1841

Re: Internal Resistance for pack of LG HG2 cells

Yes sir. I will run the test on Sunday and post the results by Sunday night or Monday morning. Thank you again for all of your ideas.
by garolittle
Nov 15 2019 9:12am
Forum: Battery Technology
Topic: Internal Resistance for pack of LG HG2 cells
Replies: 25
Views: 1841

Re: Internal Resistance for pack of LG HG2 cells

I really appreciate all of the responses. I have learned many things and will use the “charger method” references above. Good point about the individual cells. Also, it is true I am only looking for the IR of the cell string (with 20 in parallel). Either way, I appreciate the responses from both of ...
by garolittle
Nov 14 2019 8:32pm
Forum: Battery Technology
Topic: Internal Resistance for pack of LG HG2 cells
Replies: 25
Views: 1841

Re: Internal Resistance for pack of LG HG2 cells

john61ct wrote:
Nov 14 2019 8:21pm
DMM is a Digital Multi-Meter

Getting IR for benchmarking changes from now vs later is very useful.
Roger that and thanks!
by garolittle
Nov 14 2019 8:13pm
Forum: Battery Technology
Topic: Internal Resistance for pack of LG HG2 cells
Replies: 25
Views: 1841

Re: Internal Resistance for pack of LG HG2 cells

Got an idea. If you can measure charging current or if you know the charging current, you can calculate internal resistance from the charging current value and voltage difference on the cell. You just need to have DMM with resolution mV or better 0,1 mV and connect to any cell´s balance wiring. Hey...
by garolittle
Nov 14 2019 5:58pm
Forum: Battery Technology
Topic: Internal Resistance for pack of LG HG2 cells
Replies: 25
Views: 1841

Re: Internal Resistance for pack of LG HG2 cells

I do not believe the 2.81 is correct but I want to double check to be sure. Thanks for any ideas. Gary
by garolittle
Nov 14 2019 5:57pm
Forum: Battery Technology
Topic: Internal Resistance for pack of LG HG2 cells
Replies: 25
Views: 1841

Re: Internal Resistance for pack of LG HG2 cells

docware wrote:
Nov 14 2019 5:51pm
garolittle,what is purpose of this pack measurement ?
I want to verify the BMS data regarding the internal resistance. I have an Orion jr. BMS and it is showing a higher reading than normal. Typical IR for this pack has been .8 to .9 but the recent reading was 2.8.
by garolittle
Nov 14 2019 2:49pm
Forum: Battery Technology
Topic: Internal Resistance for pack of LG HG2 cells
Replies: 25
Views: 1841

Re: Internal Resistance for pack of LG HG2 cells

PaulD wrote:
Nov 14 2019 2:41pm
To be clear, you want to measure the resistance of each 14S1P string? Or each 1S20P group? Not sure how your pack is configured.
My apologies. Since the 20 in parallel act as a single cell in terms of voltage, I want to measure the internal resistance of each sting of 20
by garolittle
Nov 14 2019 1:13pm
Forum: Battery Technology
Topic: Internal Resistance for pack of LG HG2 cells
Replies: 25
Views: 1841

Internal Resistance for pack of LG HG2 cells

Background: I have a 14S/20P pack of LG HG2 cells and need to measure the internal resistance of each cell string. Can I use the process discussed at the 4-minute mark of the YouTube link below except use a 20-olm resistor instead of a 1-olm resistor? Thanks!

https://youtu.be/av38iBxcOgQ
by garolittle
Nov 01 2019 12:02pm
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 1146
Views: 158369

Re: kWeld - "Next level" DIY battery spot welder

flippy wrote:
Oct 31 2019 11:27am
garolittle wrote:
Oct 31 2019 11:11am
I am one of those who dumped the Sunkko after using the kWeld. 8)
i stopped using after the transformer blew up all over the workbench.
Wow. Glad you were not hurt!
by garolittle
Oct 31 2019 11:11am
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 1146
Views: 158369

Re: kWeld - "Next level" DIY battery spot welder

My POS dead Sunnko was $250. My new KWeld will be $234. The real question is will they perform better? Never owned a Sunkko, but I can tell that I have quite a few customers who told me that they have dumped their Sunkko after having used kWeld 8) I am one of those who dumped the Sunkko after using...
by garolittle
Oct 22 2019 7:15pm
Forum: Battery Technology
Topic: Charging and Balancing Questions for LG HG2 pack (14S/20P)
Replies: 10
Views: 703

Re: Charging and Balancing Questions for LG HG2 pack (14S/20P)

No, really separate parameters. Ah capacity will help support amps discharge rate, lower stress on the cells, and of course range. The loads - in this case motor + controller - will determine what voltage you want, taking desired top speed into account. But going faster drastically lowers range. So...
by garolittle
Oct 22 2019 12:05pm
Forum: Battery Technology
Topic: Charging and Balancing Questions for LG HG2 pack (14S/20P)
Replies: 10
Views: 703

Re: Charging and Balancing Questions for LG HG2 pack (14S/20P)

Thanks again for all of the great responses. Would higher numbers of cells in Parallel make lower voltage strings acceptable? For example, if I used 14S/30P instead of 14S/20P, would this allow for lower voltages per cell string? Just curious. Thanks. Gary
by garolittle
Oct 21 2019 7:38pm
Forum: Battery Technology
Topic: Charging and Balancing Questions for LG HG2 pack (14S/20P)
Replies: 10
Views: 703

Re: Charging and Balancing Questions for LG HG2 pack (14S/20P)

Thank you. I really do appreciate the response. Gary.