Search found 57 matches

by destro23
May 26 2020 9:26pm
Forum: Vendor Relations Corner
Topic: No reply from lithiumbatterypcb.com - are they still alive?
Replies: 12
Views: 558

Re: No reply from lithiumbatterypcb.com - are they still alive?

I ordered a BMS with express shipping from them on May 12. Five days later their site showed the order "processing". I emailed James, and he quickly responded with a DHL tracking number, assuring me that it has been shipped and that he is pleased to give me advance notice. DHL says the number has b...
by destro23
May 26 2020 9:21pm
Forum: Battery Technology
Topic: Need help troubleshooting 13s new build
Replies: 1
Views: 190

Need help troubleshooting 13s new build

I just picked up new samsung 30Q's they were all the same voltage out of the box. I created a 13s4p 48v battery with a 14 wire 13s bms. After 3 rides the bms cut out on me. It turns out -1 was 3.22 and the other cells were all 4.07 I pulled the first (-1) 4p pack off and all the spot welds were soli...
by destro23
Apr 15 2020 1:44pm
Forum: Vendor Relations Corner
Topic: No reply from lithiumbatterypcb.com - are they still alive?
Replies: 12
Views: 558

Re: No reply from lithiumbatterypcb.com - are they still alive?

how long has it been for you? i'm trying to find a BMS that will ship and hopefully take a few weeks.
by destro23
Apr 14 2020 8:10pm
Forum: Battery Technology
Topic: USA Stock of BMS's?
Replies: 13
Views: 562

Re: USA Stock of BMS's?

I would follow the threads. I like a Bluetooth one. How many amps ddo you need and or how big a pack as ah are you going to build . What motor and controller ? All relevant. I don't run a BMS as my pack is 20ah. But I can't let my friends borrow it as it doesn't have a BMS. Catch 22 if it's not for...
by destro23
Apr 14 2020 7:13pm
Forum: Battery Technology
Topic: USA Stock of BMS's?
Replies: 13
Views: 562

Re: USA Stock of BMS's?

95 precent of all bms's made in China. Frist Isa cannot match the and does not want to take the responsibility if you burn your house down because of a bad $25 BMS. They can just make them very cheap and when they make them so cheap there are a potential fire hazard. Not worth it for the low profit...
by destro23
Apr 14 2020 8:41am
Forum: Battery Technology
Topic: USA Stock of BMS's?
Replies: 13
Views: 562

USA Stock of BMS's?

Does anyone in here know of any reputable BMS sellers with a USA stock?

I'm just looking for 48v/13s and 52v/14s BMS's with balancing. I'm not sure the current delivery times from china.

Thanks!
by destro23
Jul 08 2019 9:44am
Forum: Battery Technology
Topic: Best cheap spotwelder?
Replies: 19
Views: 2068

Re: Best cheap spotwelder?

I also recommend the malectrics, I have the original version that first came out. My recommendation is use 6 gauge pure copper welding cables for the probes cables. At first I was using the cheaper 8 gauge copper clad and the cables got too hot to hold after about 10 welds, the power setting also h...
by destro23
Jun 29 2019 9:08pm
Forum: Battery Technology
Topic: Adding a Key to battery pack ?
Replies: 15
Views: 1042

Re: Adding a Key to battery pack ?

Do you want the key to switch the pack on and off completely? Or are you looking for a key to turn the BMS on and off? The former requires a switch that can handle the inrush current of charging the caps in the controller, at the voltage the battery is fully charged at, without welding the contacts...
by destro23
Jun 27 2019 12:23pm
Forum: Battery Technology
Topic: Adding a Key to battery pack ?
Replies: 15
Views: 1042

Adding a Key to battery pack ?

I was just wondering on what you guys use if you've ever added a key to a battery pack?

https://imgur.com/IppF0pL

thanks!
by destro23
Jun 23 2019 6:23am
Forum: Battery Technology
Topic: What dc screw on plugs do you use?
Replies: 1
Views: 266

What dc screw on plugs do you use?

E-outstanding 5-Pack DC-099 5.5 mm x 2.1mm 30V 10A DC Power Jack Socket,Threaded Female Panel Mount Connector Adapter https://www.amazon.com/dp/B07C46XMPT/ref=cm_sw_r_cp_api_i_1-1dDb3ZCF4H0 Something like this? And which is positive or negative? How do I wire it? Positive in the center? Do I get 10a...
by destro23
Jun 12 2019 11:33am
Forum: Battery Technology
Topic: First battery build questions galore
Replies: 9
Views: 829

Re: First battery build questions galore

battery was finally built and paired with a Golden Motor Black pie v5. Using mostly Sony Laptop cells, I went overboard and went 8p13s for about 17aH i think those cells are 5a discharge. I've been riding the pack around and really haven't measured the true pack capacity yet. Golden motor just relea...
by destro23
Jan 27 2019 11:02pm
Forum: Battery Technology
Topic: US Malectrics Spot Welder Owners! Questions!
Replies: 7
Views: 819

Re: US Malectrics Spot Welder Owners! Questions!

I'm in New jersey and he shipped the same day i ordered. came 5-6 business days from germany. i consider that fast. works great!
by destro23
Nov 13 2018 12:04am
Forum: Items for Sale - New
Topic: JP spot welder
Replies: 1242
Views: 188385

Re: JP spot welder

I started using my welder and it seems I’m getting some weak welds... and they get a little stronger if I rotate the copper leads. Is my battery not strong enough? 530ca 425cca reserve capacity 75 (whatever that means) using .15 nickel at 26ms If I get a stronger battery would it help? Or do I have...
by destro23
Nov 13 2018 12:03am
Forum: Items for Sale - New
Topic: JP spot welder
Replies: 1242
Views: 188385

Re: JP spot welder

Allex wrote:
Nov 12 2018 6:03pm
Dont use too much pressure on the tips! 750CCA is good enough for 0,2mm
wait what? i kind of press down pretty hard on them this way the nickle strip is touching the cells very solid. is that wrong?
by destro23
Nov 12 2018 2:28pm
Forum: Items for Sale - New
Topic: JP spot welder
Replies: 1242
Views: 188385

Re: JP spot welder

Sounds like the battery is too weak. Is it an old battery? I bought it certified/used from autozone. It currently reads 12.94 volts and it’s been off the trickle charger for 2 days. I’m gonna try and return it for a bigger one today. This may be the issue. What size battery are you using? I also ha...
by destro23
Nov 12 2018 10:39am
Forum: Items for Sale - New
Topic: JP spot welder
Replies: 1242
Views: 188385

Re: JP spot welder

I started using my welder and it seems I’m getting some weak welds... and they get a little stronger if I rotate the copper leads. Is my battery not strong enough? 530ca 425cca reserve capacity 75 (whatever that means) using .15 nickel at 26ms If I get a stronger battery would it help? Or do I have ...
by destro23
Nov 12 2018 9:48am
Forum: Battery Technology
Topic: Best battery Deals on 11 11 Chinese sale!?
Replies: 11
Views: 1386

Re: Best battery Deals on 11 11 Chinese sale!?

I was looking for genuine Samsung’s 30Q or Panasonic GA but have no idea who has them on this site.
by destro23
Nov 11 2018 9:26pm
Forum: Battery Technology
Topic: Best battery Deals on 11 11 Chinese sale!?
Replies: 11
Views: 1386

Re: Best battery Deals on 11 11 Chinese sale!?

no one? .... considering people always looking for cheap batteries and deals on here i thought there would be a little more action... these don't look bad https://www.aliexpress.com/item/100-Original-LiitoKala-Lii-35A-3-7V-3500mAh-NCR18650GA-10A-Discharging-Rechargeable-Batteries-For-Sanyo/328233612...
by destro23
Nov 11 2018 10:01am
Forum: Battery Technology
Topic: Best battery Deals on 11 11 Chinese sale!?
Replies: 11
Views: 1386

Best battery Deals on 11 11 Chinese sale!?

I saw this post from mika and got me thinking about picking up some 18650 cells. since i just built my first test pack it might be time to order some new cells! i'm thinking samsung 30q or panasonic GA cells any specific vendors you guys have used in the past? https://www.youtube.com/watch?v=53d2D_v...
by destro23
Oct 11 2018 10:51pm
Forum: EV Business World
Topic: Creating an E bike Market Explosion....
Replies: 47
Views: 12441

Re: Creating an E bike Market Explosion....

realistically i've seen local bike shops close that have been open for over 50 years. and yes they kept up with the times. And i walked into another random shop and the guy was going to close up when he retires in a year or so. i spoke with him about ebikes and he said they are still a niche market ...
by destro23
Sep 22 2018 3:20pm
Forum: Battery Technology
Topic: First battery build questions galore
Replies: 9
Views: 829

Re: First battery build questions galore

If the batteries are 5amp continuous do the amps add up on the parallel?
by destro23
Sep 22 2018 2:09pm
Forum: Battery Technology
Topic: First battery build questions galore
Replies: 9
Views: 829

Re: First battery build questions galore

Thanks zip.

any suggestions on wire gauge and type?
by destro23
Sep 20 2018 6:30pm
Forum: Battery Technology
Topic: First battery build questions galore
Replies: 9
Views: 829

First battery build questions galore

Edit: Scroll to bottom for update and more questions. OK, so i picked up a small box of dell laptop batteries and they are all sony SF US18650GR G7 https://secondlifestorage.com/t-Sony-US18650GR-G7-Cell-Specifications Using liito-kala 500 charger i've tested every cell and have put any low voltage/d...
by destro23
Aug 06 2018 5:56am
Forum: E-Bike General Discussion
Topic: Stretch cruiser Rat Rod Build. What Motor best for single speed?
Replies: 15
Views: 900

Re: Stretch cruiser Rat Rod Build. What Motor best for single speed?

I def don’t want Panniers for this build. But thanks aroundqube this is what I was looking for.. I guess this is what people use for single speed rear hubs. I wonder if there is a specific Gearing that would be good for a befang bss02 or rear hubs. So to update and clear up some info. I will not be ...
by destro23
Aug 05 2018 10:42pm
Forum: E-Bike General Discussion
Topic: Stretch cruiser Rat Rod Build. What Motor best for single speed?
Replies: 15
Views: 900

Re: Stretch cruiser Rat Rod Build. What Motor best for single speed?

Rear wheel is 24” temp that came with bike. It’s eventually going to look like the front 26” much cleaner