Search found 8397 matches

by 999zip999
Jan 02 2019 3:13pm
Forum: Battery Technology
Topic: Joyisi brand and reliable long range batteries?
Replies: 4
Views: 206

Re: Joyisi brand and reliable long range batteries?

You are in USA I would go with Luna cycle , ebikes ca , or em3ev. Don't pay good money for junk. Lots of junk out there. what motor and controller as you must match the battery. So they live happy togethere.
by 999zip999
Jan 02 2019 3:03pm
Forum: Battery Technology
Topic: 48V Charging Issue
Replies: 6
Views: 286

Re: 48V Charging Issue

The only way to know the state of charge is to start at the neg end and check cell voltage and write down on a piece of paper like.

!. 4.01v
2. 4.51v
3. 4.55v

13. Xxxx volt
charger voltage Xxx volt
Pack voltage Xxx voltage
Report back.
state of charge.
Plus what cells where you get them ?
by 999zip999
Jan 02 2019 12:44am
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 565
Views: 67276

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

What small planet Big world. They will be in stock again as I think this is the best battery do it yourself welder on the planet at the moment. At a diy price . Read up. Lots of info about good results.
by 999zip999
Jan 01 2019 6:57pm
Forum: Battery Technology
Topic: 3rd ebike battery. This time, doing it right
Replies: 46
Views: 2186

Re: 3rd ebike battery. This time, doing it right

Oh . The only way I would do that if I put a full sheet of that red paper on top of pos. side with holes punch out for the placement of wired copper. Look at the 4th cell of from bottom and see the melted shrink wrap next to the Neg. can ? A tiny amount of flux makes flow.
by 999zip999
Dec 31 2018 10:06am
Forum: Battery Technology
Topic: 3rd ebike battery. This time, doing it right
Replies: 46
Views: 2186

Re: 3rd ebike battery. This time, doing it right

How you going to conect the cells.?
by 999zip999
Dec 31 2018 12:05am
Forum: Battery Technology
Topic: 6s charger
Replies: 3
Views: 162

Re: 6s charger

I don't think anybody sells the heyperion 1440 anymore as many stop working.
by 999zip999
Dec 29 2018 2:59pm
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 565
Views: 67276

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

H.F has those small diamond disc put in a drill pointing up or flat. Just find a way to brace your hand in your hand. And spin. Tungsten 1 hard weird metal.
by 999zip999
Dec 29 2018 11:12am
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 565
Views: 67276

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

Tip shape and finishing means a lot whether it's a point or a tip that looks like a snow cone. Yes got to keep working at it and see what works best. But you can't leave it as a point. My old neighbor had a TIG welder and a $600 Swiss electoral conditioner. It would cut cone the tip rotate the tip t...
by 999zip999
Dec 29 2018 11:06am
Forum: Battery Technology
Topic: Trim down charger voltage
Replies: 16
Views: 367

Re: Trim down charger voltage

This can just be the behavior of your used cells. If you have a high cell you can bring that one down with a car tailight bulb .
by 999zip999
Dec 29 2018 1:59am
Forum: E-Bike Technical
Topic: Battery options - MJ1 vs GA
Replies: 3
Views: 165

Re: Battery options - MJ1 vs GA

You can have the mods move this to the battery section you should get better results.
by 999zip999
Dec 29 2018 1:53am
Forum: E-Bike Technical
Topic: High power controllers
Replies: 3
Views: 210

Re: High power controllers

What battery ? What brand and type of cells in the pack ? Not all batteries made at same level of performance. Good , bad and the ugly.
by 999zip999
Dec 29 2018 1:38am
Forum: E-Bike Technical
Topic: 22 cell charger can charge 20?
Replies: 22
Views: 593

Re: 22 cell charger can charge 20?

That caps cooked. Pop. Look at the board to see if you burn the traces. Bad idea to charge with a over voltage charger. It only takes one missteak and you can't go back. Danger.
You also blow a cap by turning to far up to fast.
by 999zip999
Dec 28 2018 11:58pm
Forum: Battery Technology
Topic: Battery problem
Replies: 7
Views: 172

Re: Battery problem

What ampage you using pack at ? As 3p is a small pack.
by 999zip999
Dec 28 2018 11:51pm
Forum: Battery Technology
Topic: Battery problem
Replies: 7
Views: 172

Re: Battery problem

Yes an old phone charger. But must check it's voltage and seat and watch as to never over charge. Must monitor closely . Or buy a cheap R/C balance charger Best to write down on paper. What cells are they ? Old used computer cells ? Why does it say lifepo4 ? A different battery cell.
by 999zip999
Dec 28 2018 11:46pm
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 565
Views: 67276

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

You find a tig welder who has old tips and try one. But the old tips can be recycled so still have value.
by 999zip999
Dec 28 2018 9:55pm
Forum: Battery Technology
Topic: Battery problem
Replies: 7
Views: 172

Re: Battery problem

Where did you get the cells and what brand a link maybe ? After cutoff check the cell voltage and write down like this for state of charge.
1. 3.2v
2. 2.8v
3. 3.1v


10. xxx volts
charger voltage Xxx volts
by 999zip999
Dec 28 2018 9:52pm
Forum: E-Bike General Discussion
Topic: Sinewave Controller?
Replies: 11
Views: 473

Re: Sinewave Controller?

I would go with 12fet powervelocity bt .Give the scooter back to the get you it from. And 20in. wheel for safety or bigger. Those small wheels can be scary at speed. plus I'm 6'4"
by 999zip999
Dec 28 2018 8:59pm
Forum: Battery Technology
Topic: Power tool batteries...interchangeability ?
Replies: 29
Views: 935

Re: Power tool batteries...interchangeability ?

This has turned into a very informative thread. Much better then the title let's on. E.S.
by 999zip999
Dec 27 2018 3:45pm
Forum: Battery Technology
Topic: 3rd ebike battery. This time, doing it right
Replies: 46
Views: 2186

Re: 3rd ebike battery. This time, doing it right

Do order the gasket for on the pos. side if extra still put it on the pos. side. .
by 999zip999
Dec 26 2018 8:39pm
Forum: Battery Technology
Topic: Power tool batteries...interchangeability ?
Replies: 29
Views: 935

Re: Power tool batteries...interchangeability ?

Somehow I didn't. Mention that Ridgid Tools at Home Depot with the interchangeable tools and in the changeable batteries have a lifetime warranty somehow I'll put that in the first post I put in about Ridgid Tools and tool batteries.
I made my old post better.
by 999zip999
Dec 26 2018 6:01pm
Forum: Battery Technology
Topic: Power tool batteries...interchangeability ?
Replies: 29
Views: 935

Re: Power tool batteries...interchangeability ?

Ridgid Tools from Home Depot for their 2ah 4ah and 5ah batery packs. Have a life time warranty On tools to be repaired or replaced and batteries if you have a bad battery put it on the tool at the same time when returning to get full replacement same time. I'm a welder and my buddy throws tools so t...
by 999zip999
Dec 25 2018 3:54pm
Forum: E-Bike Technical
Topic: Problem with 60A luna controller
Replies: 6
Views: 244

Re: Problem with 60A luna controller

You should have the ebike tester for motor controller and throttle.
by 999zip999
Dec 25 2018 1:58pm
Forum: E-Bike Technical
Topic: Problem with 60A luna controller
Replies: 6
Views: 244

Re: Problem with 60A luna controller

Hall wire and sense wire may not be a color match
by 999zip999
Dec 25 2018 12:35pm
Forum: Battery Technology
Topic: 3s or 4s for 12v battery
Replies: 25
Views: 691

Re: 3s or 4s for 12v battery

I don't have a link this is a exotic car repair he had half a wall these modules I looked at them and saw that the tabs were laser welded very short if cut to work with for 1p. May just the bms and not puff cells. What more often fails on the karma fisker A123 modules. I know if he would like me poc...