Search found 1045 matches

by eee291
Sep 20 2021 2:47pm
Forum: Battery Technology
Topic: Can these chargers be modded?
Replies: 1
Views: 157

Re: Can these chargers be modded?

I'd start looking for a thin trace going from the current shunts. You may have to flip the pcb around.
The resistor to be changed is most likely on that small daughterboard sticking up.
by eee291
Aug 19 2021 12:13pm
Forum: EBike Technical
Topic: Greentime 48v regen efficiency
Replies: 1
Views: 104

Re: Greentime 48v regen efficiency

What you said makes zero sense, what you're actually looking for is a Controller that has a weaker regen setting, or a Motor that can handle more current.
by eee291
Jul 17 2021 11:39am
Forum: EBike Troubleshooting
Topic: motor locking / going in reverse for 0.1s after accelerating
Replies: 2
Views: 147

Re: motor locking / going in reverse for 0.1s after accelerating

Sounds like dead Hall sensors or damaged Hall sensor wires.
by eee291
Jun 28 2021 12:00pm
Forum: EBike General Discussion
Topic: APT headaches....NEW PICS ADDED
Replies: 5
Views: 222

Re: APT headaches....

I can't read half of these. :shock:
In the first picture try changing default gear to high,then cycle the controller ignition and try it.
by eee291
Jun 22 2021 2:50am
Forum: Battery Technology
Topic: Bestech Hs-006 does not balance
Replies: 1
Views: 117

Re: Bestech Hs-006 does not balance

Why would you want to balance them when they are discharged? The same thing will happen when you charge them again. I would suggest you stop discharging them right before the cell voltages start to stray, like 3.3V per cell most of the times. If you really want to balance your cells all the time you...
by eee291
Jun 03 2021 9:17am
Forum: Vendor Relations Corner
Topic: PSWPOWER - DO NOT USE
Replies: 2
Views: 326

Re: PSWPOWER - DO NOT USE

Never seen Aliexpress themselves not siding with the customer.
by eee291
May 07 2021 2:48am
Forum: Motor Technology
Topic: Hubmonster teardown
Replies: 199
Views: 11373

Re: Hubmonster teardown

You have to multiply battery Current x Volts to get your power (Kw) not phase Current.
by eee291
Apr 20 2021 2:15pm
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1663
Views: 229318

Re: bluetooth BMS?

I would try a different browser app
or try copying it over from a pc or phone.
by eee291
Dec 29 2020 4:16pm
Forum: Motor Technology
Topic: Oil cooling a motor with transformer oil/dielectric fluid - the next frontier?
Replies: 109
Views: 3926

Re: Oil cooling a motor with transformer oil/dielectric fluid - the next frontier?

I put about 200mil of this stuff in my QS3k mid drive like 2-3 years ago without thinking much about it, maybe I'll open the motor this week and check if any damage occurred :!:
https://www.duralag.ch/uploads/qRexMlJd ... D_ELow.pdf
by eee291
Dec 27 2020 3:39pm
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1663
Views: 229318

Re: bluetooth BMS?

you could try a few things. - try different version of the App - connect with other devices. Android or even better, IPhone. - disconnect all other devices from that box and use only the battery with BMS - try other Bluetooth module - check/post all app settings on here Thanks for the reply! I will...
by eee291
Dec 26 2020 8:39am
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1663
Views: 229318

Re: bluetooth BMS?

you could try a few things.
- try different version of the App
- connect with other devices. Android or even better, IPhone.
- disconnect all other devices from that box and use only the battery with BMS
- try other Bluetooth module
- check/post all app settings on here
by eee291
Dec 15 2020 2:36pm
Forum: Battery Technology
Topic: Can you see anything wrong with this pack build?
Replies: 20
Views: 1095

Re: Can you see anything wrong with this pack build?

is this your battery or is this a "design" you want to copy? because if it's the former then what's the point of critiquing it? You have nothing to add, no technical critique or engineering suggestions? .... Your just doing a post count bump for yourself? I've got something useful to add ...
by eee291
Dec 14 2020 3:45pm
Forum: Battery Technology
Topic: Can you see anything wrong with this pack build?
Replies: 20
Views: 1095

Re: Can you see anything wrong with this pack build?

is this your battery or is this a "design" you want to copy?
because if it's the former then what's the point of critiquing it?
by eee291
Dec 12 2020 5:31am
Forum: EBike Technical
Topic: 32Volts 8Amp Battery
Replies: 3
Views: 247

Re: 32Volts 8Amp Battery

From what I can tell your Battery meter isn't made for your battery voltage, and that's why it always shows full. It suddenly showing is empty because the BMS has cut all power. If the battery is a 10S it should charge all the way to 42V and be empty at 30V, but since the BMS allows it to go way bel...
by eee291
Dec 10 2020 5:45pm
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1663
Views: 229318

Re: bluetooth BMS?

Forum websites make lots of money from the ongoing ever-repeating discussions. look who's making bank, 6780 posts in just 2 years :o Yes a Wiki is better for semi-static structured info everyone collaborating to build it and keep it maintained. Stop! It's already dead :oops: Will require a differen...
by eee291
Dec 10 2020 5:44pm
Forum: Items for Sale - New
Topic: QSMOTOR,0.5-12kW Electric Hub Motor & Mid Drive Motor Manufacture China
Replies: 1440
Views: 324451

Re: QSMOTOR,0.5-12kW Electric Hub Motor & Mid Drive Motor Manufacture China

I wanna build a motoped(or vector vortex) frame and 19"moto wheels with a qs138 and top out at 90ish will the 138 have enough torque to be fun geared to 90mph/144kph? I really wanna have a bike thats fast for off road and have pedals to ride back home lol... 144km/h on a bicycle, hope you like...
by eee291
Nov 29 2020 5:33pm
Forum: EBike Technical
Topic: Stromer st1 diy build
Replies: 1
Views: 679

Re: Stromer st1 diy build

135mm to 150mm isn't a big deal IMO just use some washers to compensate.
And yes, for your use case the the QS 205V 3 is too much if you aren't looking for trouble :lol:
by eee291
Nov 29 2020 5:22pm
Forum: EBike General Discussion
Topic: The battery has three wires. We only have +- controllers. Please help me.
Replies: 1
Views: 229

Re: The battery has three wires. We only have +- controllers. Please help me.

If the new controller is aftermarket and only needs + and - then you can ignore the 3s wire, unless it needs a signal there to activate the BMS but I have no idea.
If it doesn't work just install a aftermarket BMS on the battery as well and you should be good to go.
by eee291
Nov 29 2020 5:14pm
Forum: General Discussion
Topic: How to hook up a single wire brake light
Replies: 1
Views: 313

Re: How to hook up a single wire brake light

That's not how that works.

Applying 12V to brake HI causes the Controller to either regen or just ignore the throttle input.
You need an existing 12V system just like on a motorcycle or car where it sends 12V to the brake lights... and the controller in this case.
by eee291
Nov 15 2020 11:54am
Forum: Battery Technology
Topic: Rectifier Huawei R4850G2 48V 42~58V 3000w
Replies: 157
Views: 33268

Re: Rectifier Huawei R4850G2 48V 42~58V 3000w

There is a link to a Chinese forum in this thread and a ton of other posts with info, it's just a few pages back.
by eee291
Nov 08 2020 7:50am
Forum: E-Vehicles General Discussion
Topic: BMW E "i5" conversion by Matija
Replies: 54
Views: 8315

Re: BMW E "i5" conversion by Matija

In Austria there is one TÜV inspection site per state, I happen to live like 10 minutes away from one and asked once about converting a car. They just looked at me funny and said they have no clue and it's probably too much of a hassle for all of us. It seems to me like they are really old fashioned...
by eee291
Nov 06 2020 2:09pm
Forum: Large EV General Discussion
Topic: Connecting EV motor to splined shaft
Replies: 2
Views: 1229

Re: Connecting EV motor to splined shaft

You will need some custom work done.

https://www.hayescouplings.com/hayes-cu ... -adapters/
Something like this maybe
by eee291
Nov 06 2020 1:06pm
Forum: Battery Technology
Topic: Help with LG chem Batteries
Replies: 5
Views: 333

Re: Help with LG chem Batteries

That cell looks beat up as hell, hope the rest don't look like that.

The only way to find the Ah rating for sure is with a capacity meter/Battery capacity tester.
by eee291
Nov 03 2020 4:38pm
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1663
Views: 229318

Re: bluetooth BMS?

I know that the cell counts are configurable in the PC software, but can they be set below the range that they are advertised as being capable of handling? For example, if I buy the 15S version of the 10S-15S BMS linked below, can I configure the BMS to work properly on 8S? I am running 8S right no...