Search found 841 matches

by Kin
Dec 12 2018 1:03pm
Forum: Battery Technology
Topic: Generic-Chinese-Bluetooth-BMS-communication-protocol
Replies: 21
Views: 1507

Re: Generic-Chinese-Bluetooth-BMS-communication-protocol

All cell count up to 30s are available for these boards https://es.aliexpress.com/store/group/20S-to-30S-smart-BMS/1379203_514039624.html?spm=a2g1y.12024536.pcShopHead_8538170.1_0_4 If your specific cell count is not there, just ask the vendor to do one for you (they configure the cables and firmwa...
by Kin
Dec 12 2018 10:16am
Forum: Battery Technology
Topic: Generic-Chinese-Bluetooth-BMS-communication-protocol
Replies: 21
Views: 1507

Re: Generic-Chinese-Bluetooth-BMS-communication-protocol

With 45-48S as my likely total cell voltage I end up feeling like it's easier to have the bms units drive relays to control power to a main contactor. I still need to work through whether the quiescent current draw will be too high as a result or if I turn on off the relay when the car us off if the...
by Kin
Dec 11 2018 3:30pm
Forum: Battery Technology
Topic: Generic-Chinese-Bluetooth-BMS-communication-protocol
Replies: 21
Views: 1507

Re: Generic-Chinese-Bluetooth-BMS-communication-protocol

I just wrote up a long thread asking people if there are any of these UART BMS units with a known protocol. I almost hit send and then decided to check again on ES....found your thread! nice work! Do you have any recommended BMS unit sellers? I also haven't had an easy time getting sellers to tell m...
by Kin
Nov 16 2018 11:24am
Forum: E-Vehicles General Discussion
Topic: The Snow Joe ION18SB Snow Blower... modified..
Replies: 9
Views: 1308

Re: The Snow Joe ION18SB Snow Blower... modified..

Hey,,, sorry to bump an old thread. This is the only modified snow joe thread I could find, and I was thinking about doing the same thing. I am currently undecided whether I should just go for a 15A corded model or go for the slightly weaker and more expensive battery model knowing that I have spare...
by Kin
Nov 09 2018 11:23am
Forum: Items for Sale - Used
Topic: Nissan Leaf Motor Adapter Plate Kit Solution - Most Manual Vehicles
Replies: 10
Views: 567

Re: Nissan Leaf Motor Adapter Plate Kit Solution - Most Manual Vehicles

That sounds quite nifty. You may want to include some links to the background of the kit development, existing example converted cars, etc.
by Kin
Aug 24 2018 8:23am
Forum: Battery Technology
Topic: Quick Meanwell SP-series question, CC or Hiccup? Datasheet says CC, but posts seem to suggest otherwise
Replies: 4
Views: 143

Re: Quick Meanwell SP-series question, CC or Hiccup? Datasheet says CC, but posts seem to suggest otherwise

Thanks folks! Last second I found another 24v charger and threw a harness together for that one, hoping that it was in good condition (also wasnt used in many years.) I will try testing the sp charger again, though it appears to be hiccuping instead of going into CC mode, though it wasnt steady and ...
by Kin
Aug 23 2018 3:06pm
Forum: Battery Technology
Topic: Quick Meanwell SP-series question, CC or Hiccup? Datasheet says CC, but posts seem to suggest otherwise
Replies: 4
Views: 143

Quick Meanwell SP-series question, CC or Hiccup? Datasheet says CC, but posts seem to suggest otherwise

I've found a few posts on ES saying the SP-series operates in hiccup mode, and only the S-series operates in CC fold back mode. The datasheet (http://www.meanwellusa.com/productPdf.aspx?i=436#1) Says "Overload: 105 ~ 150% rated output power Protection type : Constant current limiting, recovers autom...
by Kin
Jun 04 2018 10:39am
Forum: Battery Technology
Topic: Hacking "JBLTools" Chinese Bluetooth BMS boards
Replies: 13
Views: 703

Re: Hacking "JBLTools" Chinese Bluetooth BMS boards

Possibly naive question, but if the protection fets aren't being used (only balance taps), is there any danger to connecting multiple boards in series? I.e, two bluetooth 16s modules connected to make up a 32S pack, for example. As far as I can tell, they should only see the voltage they're tapped a...
by Kin
Jun 03 2018 1:59pm
Forum: Battery Technology
Topic: Hacking "JBLTools" Chinese Bluetooth BMS boards
Replies: 13
Views: 703

Re: Hacking "JBLTools" Chinese Bluetooth BMS boards

I don't know if the forum has a method to "follow" without posting, but I'd like to follow this thread :D. I'm personally curious aboiut the bluetooth BMS boards because they seem to me a cheap/modern way to get a form of isolation and convenience out of a BMS board. I particularly am thinking about...
by Kin
Dec 27 2017 10:57am
Forum: Items for Sale - New
Topic: 48v 11ah nos boxes of 12 cells
Replies: 20
Views: 2300

Re: 48v 11ah nos boxes of 12 cells

Do you have any more information about the cells? I'm not familiar with the cell type, sorry.

So are you selling these as 12 cells for $150 + $50 CONUS shipping?

And what material are the tabs made of?

Thanks!
by Kin
Dec 04 2017 10:00pm
Forum: Items for Sale - Used
Topic: 21kWh / 251 EIG cells in ~3kWh banks
Replies: 15
Views: 2453

Re: 21kWh / 251 EIG cells in ~3kWh banks

Was shipping always an option? I may be misremembering this.

Mrmagics did you have a way of shipping a bank to the east coast? And do you know roughly how much that costs? For all [unlikely] or 1-3 banks [more realistic.]?
by Kin
Oct 30 2017 10:50am
Forum: Items for Sale - Used
Topic: SOLD - Battery Bloc Battery up to 72v - $400
Replies: 7
Views: 964

Re: Battery Bloc Battery up to 72v - $400

Hi I'm not totally clear what your capacity is. Is this a 52V, i.e, 14S battery pack with 17.5Ah? If I'm not mistaken that is 14*5 = 70 cells. But you said 100 cells, so maybe I am confused. Thanks! Also, can you list what the current capacity is on this battery bloc config? It's interesting, looks ...
by Kin
Oct 30 2017 10:47am
Forum: Items for Sale - Used
Topic: CUSTOM frame/E-tek motor/Controller
Replies: 44
Views: 4390

Re: CUSTOM frame/E-tek motor/Controller

It's still all beautiful and still a steal, but I still can't get myself to get into another large project I shouldn't have :). Maybe update your first page to list the newest price. You are by no means obligated to sell at the price you originally suggested, we all agree it's lame to back out, but ...
by Kin
Sep 29 2017 2:06pm
Forum: Items for Sale - Used
Topic: 21kWh / 251 EIG cells in ~3kWh banks
Replies: 15
Views: 2453

Re: 21kWh / 251 EIG cells in ~3kWh banks

That is...so appealing....I am tired of the "connection problem" I have with various DIY packs :).

If I can get a better sense of the remaining lifespan and previous condition of these cells I think I would be interested in a decent number. :) Would take a couple days to confirm all information.
by Kin
Sep 29 2017 10:10am
Forum: Items for Sale - Used
Topic: 21kWh / 251 EIG cells in ~3kWh banks
Replies: 15
Views: 2453

Re: 21kWh / 251 EIG cells in ~3kWh banks

Hi MrMagic! Your system looks really nice :O. I have been tempted to switch my Honda Insight over to A123 packs as the 50s Headway pack is dying and I don't feel super comfortable with most other lithium chemistries...this is a little interesting though. Is 35 cells the "base unit" of what is a feas...
by Kin
Sep 15 2017 7:13am
Forum: Items for Sale - Used
Topic: A123 Hymotion
Replies: 7
Views: 817

Re: A123 Hymotion

I feel like it would be helpful to know more about the battery condition. I minimal would probably be a voltage reading of the cells, to see if any are overdischarged too far. Even if the cell recovers, if the BMS gets disabled or something by that then it is a much worse item than if the BMS still ...
by Kin
Jul 24 2017 10:21am
Forum: Items for Sale - New
Topic: CHEAP NEW ORIGINAL CELLS LI-ION 18650
Replies: 709
Views: 160448

Re: CHEAP ORYGINAL CELLS 18650 and welded packs for 36V

8 weeks delivery, as expected (6-8 weeks) but my cells did arrive beautifully packaged and in great condition :). capacity untested so far, but will sometime.
by Kin
Jul 13 2017 8:54pm
Forum: Items for Sale - Used
Topic: (Sold) Motor - Astro Flight 3215 12 Turn
Replies: 14
Views: 1375

Re: Astro 3215 12 Turn Motor with Hall Sensors

Ah, wonderful! I misunderstood the conditions. Makes more sense now, thanks. Need to figure out if I have the budget to drop money on something I wouldn't use for another several months. Great motor though, hopefully someone grabs it soon
by Kin
Jul 12 2017 12:02pm
Forum: Items for Sale - Used
Topic: (Sold) Motor - Astro Flight 3215 12 Turn
Replies: 14
Views: 1375

Re: Astro 3215 12 Turn Motor with Hall Sensors

After the repair, is your no-load current closer to what you expect? I seem to remember you said the running current was higher than expected.
by Kin
Jul 11 2017 11:56am
Forum: Items for Sale - Used
Topic: 60V 20AH LIFEPO4 BATTERY PACK - Crystalyte x5304 Cheap.
Replies: 11
Views: 1431

Re: 60V 20AH LIFEPO4 BATTERY PACK - Crystalyte x5304 Cheap.

Have you considered shipping it? Maybe increase the audience alot.

Also, can you confirm what size wheel it is? I assume 26" since you did not say otherwise.
by Kin
Jul 11 2017 11:49am
Forum: Battery Technology
Topic: A123 AMP20M1HD-A Battery pack kit
Replies: 712
Views: 97947

Re: A123 AMP20M1HD-A Battery pack kit

So this might be a dead thread revived by the last post....Are these for sales? Specifically curious what (2) 24s kits would cost.
by Kin
Jul 03 2017 4:17pm
Forum: Items for Sale - New
Topic: CHEAP NEW ORIGINAL CELLS LI-ION 18650
Replies: 709
Views: 160448

Re: CHEAP ORYGINAL CELLS 18650 and welded packs for 36V

So, uhh, keep reading about 18650 cells, if you do want to make your own pack. If you feel they are more dangerous than lipo you might want to keep reading. I am not making my own pack again because once done I realized it was a PITA of work (especially starting from a base of used laptop cells and ...
by Kin
Jul 03 2017 4:11pm
Forum: Items for Sale - New
Topic: CHEAP NEW ORIGINAL CELLS LI-ION 18650
Replies: 709
Views: 160448

Re: CHEAP ORYGINAL CELLS 18650 and welded packs for 36V

Thank you for the explanation. So the danger is puncturing the cell, Thank you.. I never knew these cells are so volatile, gawd I'm sticking with lipo for the minute, I've never had any issues what so ever in the 6 years daily I've been using them. Not that I ever would!. But I've seen and read, pe...
by Kin
Jul 03 2017 1:39pm
Forum: Items for Sale - Used
Topic: (Sold) Motor - Astro Flight 3215 12 Turn
Replies: 14
Views: 1375

Re: Astro 3215 12 Turn Motor with Hall Sensors

Awesome! :) Thank you.

Are you still selling the motor after it is refurbished? Edit: I see you updated the post, I assume the new price will be different (as it should be, I mean, presumably improved after refurbishment)
by Kin
Jul 03 2017 1:36pm
Forum: Items for Sale - New
Topic: CHEAP NEW ORIGINAL CELLS LI-ION 18650
Replies: 709
Views: 160448

Re: CHEAP ORYGINAL CELLS 18650 and welded packs for 36V

Here is a possibly more thorough answer: A properly welded tab will have meaningful metallurgic bonds to the metal on the 18650 housing. This means you cannot remove them without damaging the bottom surface, at which point you can risk a puncture that lights the pack on fire (usually not so fast as ...