Search found 43 matches

by Solarpower
Jan 19 2017 4:14pm
Forum: Battery Technology
Topic: Help wire my BMS
Replies: 20
Views: 1180

Re: Help wire my BMS

Because it looks like shit :lol: :lol:
https://endless-sphere.com/forums/viewt ... 0#p1212568

Or you could take a look at this:
Li_SP.jpg
Li_SP.jpg (148.5 KiB) Viewed 850 times
by Solarpower
Jan 19 2017 5:13am
Forum: Battery Technology
Topic: Help wire my BMS
Replies: 20
Views: 1180

Re: Help wire my BMS

I will next time..
by Solarpower
Jan 18 2017 3:38pm
Forum: Battery Technology
Topic: Help wire my BMS
Replies: 20
Views: 1180

Re: Help wire my BMS

Do you understand my frustration here? :roll:

silviasol, can you confirm that I know understand you correct? Thanks :D
BMS.png
by Solarpower
Jan 18 2017 11:10am
Forum: Battery Technology
Topic: Help wire my BMS
Replies: 20
Views: 1180

Re: Help wire my BMS

Thanks Joachim! :) One last question.. Just to see what happened, I connected the JST connector to the same BMS that I did last time, only now the right way :P And it started smoking! Could this happen because I broke it last time, or is it something funny going on?
by Solarpower
Jan 17 2017 5:55am
Forum: Battery Technology
Topic: Help wire my BMS
Replies: 20
Views: 1180

Re: Help wire my BMS

The thing that got me confused was the figure showing B+ and then continuing with B1 and so on.. But it makes sense when Joachim lists them up like that.. Just does not correspond well with the drawing provided by the seller (in my head at least). silviasol, I have marked on the pack where each JST ...
by Solarpower
Jan 11 2017 8:48am
Forum: Battery Technology
Topic: Help wire my BMS
Replies: 20
Views: 1180

Re: Help wire my BMS

I found out that I did it wrong the first time, I hooked it up like I'm used to with other boards like B+, B2+, B3+ and so on... So I took "+" and connected to the first positive cell :roll: I bought a new one, and took another look at the wiring diagram. The JST connector first pin, "+", is obvious...
by Solarpower
Dec 13 2016 10:13pm
Forum: Battery Technology
Topic: 18650 spot welding -how to- ULTIMATE REPOSITORY
Replies: 718
Views: 133031

Re: 18650 spot welding -how to- ULTIMATE REPOSITORY

Do you guys get a full refund when the product is fake, or do you have to ship it back/partly refund?
I have some mixed experience with Ali regarding this, for me it has been much easier to get refund on eBay..
by Solarpower
Dec 13 2016 10:54am
Forum: Battery Technology
Topic: Help wire my BMS
Replies: 20
Views: 1180

Re: Help wire my BMS

Hope it is okay if I borrow your thread instead of making a new one.. I am having some trouble with the same BMS as Blessbeast. I have connected the wires as I am used to, since there is only 7 sense wires for a 7s BMS, they only go to the positive of the cells and not the first negative. The first ...
by Solarpower
Nov 04 2016 4:17pm
Forum: Items Wanted
Topic: Spot welder
Replies: 0
Views: 361

Spot welder

I have a broken Sunkko 709A spot welder, and need a new welder. PM me if you have something.
by Solarpower
Oct 29 2016 7:26am
Forum: Battery Technology
Topic: Broken Sunkko 709A?
Replies: 5
Views: 794

Re: 18650 spot welding -how to- ULTIMATE REPOSITORY

Does anyone know what might be wrong with my 709A welder? Right under the triac there is something going on! Should I replace the triac? :roll:

by Solarpower
Oct 22 2016 8:24am
Forum: Battery Technology
Topic: Broken Sunkko 709A?
Replies: 5
Views: 794

Re: Broken Sunkko 709A?

Of course the seller won't help, so I opened the thing. To me it looks okay in there, but I'm no expert... I took two videos when turning on the welder. The first one does not trip the circuit breaker, but you can see some things happening under the triac. https://youtu.be/14KZwfkb5bs The second one...
by Solarpower
Oct 20 2016 7:27am
Forum: Battery Technology
Topic: Broken Sunkko 709A?
Replies: 5
Views: 794

Broken Sunkko 709A?

A few months ago I got my Sunkko 709A spot welder from AliExpress, and it has worked fine- until now. I have only welded a few batteries with it, and suddenly I hear some funny sounds inside the welder. The sound reminded me of something short circuiting, but it lasted a few seconds. I turned the we...
by Solarpower
Oct 19 2016 9:29am
Forum: Battery Technology
Topic: What battery for a ~8KW 160V car battery? recommendation.
Replies: 7
Views: 522

Re: What battery for a ~8KW 160V car battery? recommendation

I have a 13 kW 72V car I am changing the batteries in. I've landed on that Leaf modules would be the cheapest alternative for me. Of course 18650s would be a good too, but I guess a lot more work if you are going to connect them all together. Most likely I will be using 30 modules (which is in 2s2p ...
by Solarpower
Oct 14 2016 4:09am
Forum: Battery Technology
Topic: Thoughts on split pack
Replies: 4
Views: 377

Re: Thoughts on split pack

Thank you for the answers.
The pack is not for me, but I will have a conversation telling him what you told me :) We are talking about 18650 yes.
by Solarpower
Oct 11 2016 8:50am
Forum: Battery Technology
Topic: Thoughts on split pack
Replies: 4
Views: 377

Thoughts on split pack

I'm building a battery that is supposed to go into separate bags on each side of the bike, but I am having some trouble deciding what to do. I was first thinking of building the 14s6p pack into two 7s6p packs, but just thinking of all the wiring made me question this idea. I'm going to use a BMS, so...
by Solarpower
Sep 07 2016 10:27am
Forum: Battery Technology
Topic: E-longboard battery pack from laptop 18650 batteries
Replies: 4
Views: 358

Re: E-longboard battery pack from laptop 18650 batteries

5A from a used laptop cell is probably too much. And I see the motor does not want more than 44V? Your 12s pack would be 50,4V when fully charged.
I have no experience with these motors so I dont know what the power output will be, but I guess that is up to your ESC?
by Solarpower
Sep 07 2016 5:11am
Forum: Battery Technology
Topic: E-longboard battery pack from laptop 18650 batteries
Replies: 4
Views: 358

Re: E-longboard battery pack from laptop 18650 batteries

Do you know how many amps you will draw at 12s? I think 4p would be to small, but with a longboard you dont have very much space of course... I did not find info on your motor, only the 149KV one, and that was max 2250 W. If you are gonna feed your motor 2 kW, you need more than 12s4p laptop cells!
by Solarpower
Aug 28 2016 2:54pm
Forum: Battery Technology
Topic: Random: 18650 cell motorcycle battery?
Replies: 18
Views: 2213

Re: Random: 18650 cell motorcycle battery?

Are you still starting your KTM with the 4s pack Storx? If so, how has it been working for you? My Suzuki Burgman 400cc is only in use a few times a month, so my lead acid battery is not the healthiest one I think :roll: I welded together a small 4s6p pack and hooked it up with some jumper cables to...
by Solarpower
Aug 12 2016 9:17am
Forum: Battery Technology
Topic: Homemade Battery Packs
Replies: 1606
Views: 394683

Re: Homemade Battery Packs

But why did you not parallel them? One thin strip of nickel and you are good to go!
by Solarpower
Aug 01 2016 1:08pm
Forum: Battery Technology
Topic: Monitoring cell voltage
Replies: 7
Views: 678

Re: Monitoring cell voltage

Thank you for all the input! Much appreciated :) Does anyone have experience with a 72V BMS? I found these two on eBay: http://www.ebay.com/itm/72V-84V-20S-30A-20x-3-6V-3-7V-4-2V-Lithium-ion-Li-ion-Li-Po-Battery-PCB-BMS-/321745436164 http://www.ebay.com/itm/Li-ion-BMS-PCM-for-72V-20S-50A-Li-PO-Batte...
by Solarpower
Jul 27 2016 6:01am
Forum: Battery Technology
Topic: Monitoring cell voltage
Replies: 7
Views: 678

Monitoring cell voltage

What is the best way to monitor individual cell voltage for a 20s pack? I have a small project going on, where I am upgrading a small EV from lead acid batteries to Nissan Leaf batteries. It has a 13kW motor and I am having troubles deciding to go with a BMS or not, because of the cost. I guess the ...
by Solarpower
Jun 08 2016 7:42am
Forum: Battery Technology
Topic: Lithium Batteries Shipping Rules Discussions
Replies: 278
Views: 48063

Re: Lithium Batteries Shipping Rules Discussions

Wouldn't say I recommend it, but I've never had any problems with shipping batteries from Aliexpress. I guess most of the sellers will send them anyway :D http://www.aliexpress.com/item/4-pcs-2015-original-Sanyo-18650-ncr18650ga-3500-MAH-lithium-battery-battery-10A-high-3-7/32653713956.html?spm=2114...
by Solarpower
Jun 03 2016 6:03am
Forum: Battery Technology
Topic: Lithium Batteries Shipping Rules Discussions
Replies: 278
Views: 48063

Re: Lithium Batteries Shipping Rules Discussions

The battery was delivered without any questions or problems. Guess I was lucky nobody checked what the contents was?
by Solarpower
Jun 01 2016 12:39pm
Forum: Battery Technology
Topic: Lithium Batteries Shipping Rules Discussions
Replies: 278
Views: 48063

Re: Lithium Batteries Shipping Rules Discussions

Took my battery to the local post office the other day, nicely packed in one small box, put inside a bigger box with "over pack" label. Both boxes marked with "lithium ion batteries", nothing else. When I said what it was, the person behind the desk had to take a phone call... Of course :lol: The gu...
by Solarpower
May 29 2016 2:43am
Forum: Battery Technology
Topic: Lithium Batteries Shipping Rules Discussions
Replies: 278
Views: 48063

Re: Lithium Batteries Shipping Rules Discussions

My practice is that those companies have absolutely no idea how to ship batteries, even if they do ship dangerous goods. Questions about battery usually spook them off. Sent from my MI 4i using Tapatalk Exactly! I called one of them and had a nice long talk, with a lot of unanswered questions, and ...