Search found 235 matches

by leffex
Aug 05 2019 1:09pm
Forum: E-Bike General Discussion
Topic: Noob expat in Sweden attempting a first build
Replies: 11
Views: 332

Re: Noob expat in Sweden attempting a first build

just search elcykelkit nor elcykelbatteri and you will find front wheel motor or battery in Sweden with warranty.

Tax for buying outside eu is + 3-8% for ebike parts into Sweden and +25% tax on that aswell as +100 sek fee for handling.
by leffex
Aug 01 2019 1:36pm
Forum: Battery Technology
Topic: 0-120V 0-30A variable rectifier/amps/charger, is it ok?
Replies: 12
Views: 333

Re: 0-120V 0-30A variable rectifier/amps/charger, is it ok?

Yes its awesome and works perfectly :banana: :banana: :banana: :banana: :banana: 5/5 Have you got one of these Leffex? If you do what voltages and currents have you tried? Is the output stable and reliable? I have tried it at maximum about 92,5v charging at 20-25A. So I guess the maximum is either ...
by leffex
Jul 31 2019 6:04pm
Forum: Battery Technology
Topic: 0-120V 0-30A variable rectifier/amps/charger, is it ok?
Replies: 12
Views: 333

Re: 0-120V 0-30A variable rectifier/smps/charger, is it ok?

Yes its awesome and works perfectly :banana: :banana: :banana: :banana: :banana: 5/5 Have you got one of these Leffex? If you do what voltages and currents have you tried? Is the output stable and reliable? I have tried it at maximum about 92,5v charging at 20-25A. So I guess the maximum is either ...
by leffex
Jul 31 2019 6:00pm
Forum: Battery Technology
Topic: 0-120V 0-30A variable rectifier/amps/charger, is it ok?
Replies: 12
Views: 333

Re: 0-120V 0-30A variable rectifier/amps/charger, is it ok?

The charger is based on R4850G

R4850G looks about like this inside:
viewtopic.php?t=86038
by leffex
Jul 31 2019 5:50pm
Forum: Battery Technology
Topic: 0-120V 0-30A variable rectifier/amps/charger, is it ok?
Replies: 12
Views: 333

Re: 0-120V 0-30A variable rectifier/amps/charger, is it ok?

Yes true. Charging only under on-sight as well. I use a 88v charger changed to about 90,5v. and about 5a The charger looks like this: https://www.aliexpress.com/item/32994268747.html?spm=a2g0o.productlist.0.0.699721a1NysN6Y&algo_pvid=f9c7a566-defb-47b8-aaae-266bb5e5e3a7&algo_expid=f9c7a566-defb-47b8...
by leffex
Jul 31 2019 1:58pm
Forum: Battery Technology
Topic: 0-120V 0-30A variable rectifier/amps/charger, is it ok?
Replies: 12
Views: 333

Re: 0-120V 0-30A variable rectifier/smps/charger, is it ok?

Yes its awesome and works perfectly

:banana: :banana: :banana: :banana: :banana: 5/5
by leffex
Jul 27 2019 5:08am
Forum: E-Bike Technical
Topic: R-MARTIN LF8 Throttle
Replies: 2
Views: 158

Re: R-MARTIN LF8 Throttle

Usually three wires. Were 1 is +5v and one is -5v and on is signal wire. Connect right and it will work
by leffex
Jul 22 2019 3:56pm
Forum: Battery Technology
Topic: Battery/cell monitor for non-bms battery
Replies: 5
Views: 250

Re: Battery/cell monitor for non-bms battery

There are battery medics 1-6s, battery voltage meter 1-8s with or without discharge and balance functionality. Max is 8 series what I know so you need at least the amount of packs that you disassemble your pack into. so if you have 4x 5s packs that's 4 meters.

Priced from about 10-50$ each.
by leffex
Jul 19 2019 9:04pm
Forum: Items for Sale - Used
Topic: Crystalyte HS3540
Replies: 0
Views: 208

Crystalyte HS3540

ebike rear motor. as stated. selling. Used fully working laced in a 26" wheel, used for about 50 hours.
Sweden, DK, EU

Up for 200€
by leffex
Jul 16 2019 3:18pm
Forum: E-Vehicles General Discussion
Topic: How are electric scooter able to produce so much torque?
Replies: 5
Views: 507

Re: How are electric scooter able to produce so much torque?

I was driving a ktm 390 1500km and yes electric feels better but at 690 or mt07 like you have. Yeah I'd like to feel that power but I don't want to feel those vibrations in my hands after my run.

If you can get a hold of a zero motorcycle for 5000-8000 I would do it directly.
:D
by leffex
Jul 16 2019 1:43pm
Forum: Polls & Surveys
Topic: Do you have or plan to start an ebike business?
Replies: 7
Views: 1899

Re: Do you have or plan to start an ebike business?

BUMP Any news here guys. Anyone who want to fill in some? I work at an ebike store and develop it as well. Since 2018 full time and it's been very good. How has it been for you, have you just started or are you in the planning stage to start your own ebike related business? I really dig the inventor...
by leffex
Jul 03 2019 2:12pm
Forum: Battery Technology
Topic: Chargery support
Replies: 7
Views: 309

Re: Chargery support

Try make a deal. I had a failed delivery from Aliexpress, nothing for 90 days and I really wanted it asap so you can imagine. I did put up a dispute and Aliexpress denied and just auto-replied that my parcel was in transit for 3 days before taking any further action. Yes, of course it was, and the d...
by leffex
Jul 03 2019 1:59pm
Forum: Battery Technology
Topic: Making a small pack 5S24P
Replies: 0
Views: 113

Making a small pack 5S24P

Just some photos of my small pack I want to share How to assemble: Soldering exactly how: tesla style. One side is fused with wire capable of 5-15a max(deciding), the other more robust fastened with thicker copper wire. Both sides uses twined copper wire as busbar. Hot glue gun to make pack sturdier...
by leffex
Jul 03 2019 1:39pm
Forum: Items for Sale - Used
Topic: Used plastic 18650 cell holders for sale 4p, 6p, 8p, 10p
Replies: 0
Views: 193

Used plastic 18650 cell holders for sale 4p, 6p, 8p, 10p

4 6,8,10p looking like in the photos below. Color black, also in light gray. Can be arranged from 4s1p to 1s10p among the sizes Composed of two pieces put together with some small force. price is for one pair making up either size. buy many get a better price. smaller sizes cost 1$ per pair, bigger ...
by leffex
Jun 30 2019 8:01am
Forum: Battery Technology
Topic: Chargery support
Replies: 7
Views: 309

Re: Chargery support

Doing this kind of support is advanced stuff to do especially if you are a one man company and also when you are dealing with a trade overseas. Warranty and repairs will be harder than going to a local store. Track your parcel and se if it has arrived or have been picked up. Detective work, Yes but ...
by leffex
Jun 30 2019 5:58am
Forum: Items for Sale - New
Topic: sold - spot welder
Replies: 2
Views: 249

Re: sold

sold
by leffex
Jun 28 2019 5:18am
Forum: Items for Sale - New
Topic: sold - spot welder
Replies: 2
Views: 249

sold - spot welder

https://i.ebayimg.com/images/g/5WwAAOSwe2FZwzZA/s-l1600.jpg selling this Never used, as new. All nickel plated plates and extra copper rods are included. Can spot weld 0,1 nickel plated but says somewhere its maximum is 0,2 but I'm not sure about that. 220V, EU version. EU plug. 50$ or highest bid....
by leffex
Jun 28 2019 5:13am
Forum: Items for Sale - New
Topic: Selling some plastic 18650 holders
Replies: 0
Views: 193

Selling some plastic 18650 holders

Selling some plastics 4x5 plastic holders for 18650 2$ each 1x1 single piece holders for 18650 0,5$ each honeycomb 1x4, 4p holders for 18650, 1$ each incoming 18650 10p holders 3$ each and 21700 10p holders 4$ each https://ae01.alicdn.com/kf/HTB1t2W4atjvK1RjSspiq6AEqXXaU/10S2P-18650-Battery-Holder-B...
by leffex
Jun 25 2019 4:09pm
Forum: Battery Technology
Topic: High Voltage high current DC power supply
Replies: 10
Views: 517

Re: High Voltage high current DC power supply

I recommend the charger as well. I have it. Its pretty powerful. Just if you buy it, pay extra for shipping if you want it fast!
by leffex
May 28 2019 10:54am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Sabvoton 7260 strange throttle Control, pleas help
Replies: 13
Views: 496

Re: Sabvoton 7260 strange throttle Control, pleas help

Find 12v or 5v brake settings. High or low voltage brake and turn it off if you have it. Mine did also brake in the begining and stopped after I turned of that setting. It is weird that it is only on that setting it is deaccelerating as you specify. Also when going fast of course you'll lose alot of...
by leffex
May 23 2019 1:01pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Affording a powerful battery
Replies: 15
Views: 736

Re: Affording a powerful battery

Currently I am making a small, lightweight, sporty electric motorcycle, and am planning on using the 20kW cyclone hub motor. I'm aware that the 20kW is the peak power, but I still think it's a good choice for it's price. The only problem is the batteries; I'd like to make my own custom battery pack...
by leffex
May 17 2019 4:29am
Forum: Battery Technology
Topic: Panasonic/Sanyo NCR20700B vs Samsung INR21700-50E
Replies: 65
Views: 2323

Re: Panasonic/Sanyo NCR20700B vs Samsung INR21700-50E

Usually those 21700 have a cut-off-voltage of 2.5V. Most of the BMS have a cut-off at 3V and from my experience with a battery US18650V3 from Sony (now Murata) I used it for over 6 years, so around 1200-1400 cycles (not complete cycles). The battery lost over the time around 20% of its capacity, bu...
by leffex
Apr 27 2019 5:07pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Yamaha 150cc conversion
Replies: 19
Views: 880

Re: Yamaha 150cc conversion

For battery I am planning to have alt #1: 300 cell NCR18650PF 2900 mAh 5C 20S 15P 43.5AH with 24S 80A BMS from Dark Horse alt #2: 300 cell NCR18650BD 3Ah 10C 20S 15P 45AH with 24S 80A BMS from Dark Horse Hope there is some inputs from you guys on how to maximize the convertion. I just realized. If ...
by leffex
Apr 26 2019 5:59am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Yamaha 150cc conversion
Replies: 19
Views: 880

Re: Yamaha 150cc conversion

Nice project and best of luck! I recommend you to get a larger battery or you have to lower your power level. Now your battery can be used at about 84v x 100a for a power of 8400 watts. For continuous use I would have to test first and to test a battery after its been build already is kind of a expe...